
Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleLocations
- Mass General Brigham Primary Care Clinic at Williamsburg
- 14 Williams Street, PO Box 765, Williamsburg, MA 01096
- Get Directions
- phone: 413-268-3616
- fax: 413-923-9311
- Cooley Dickinson Medical Group, Williamsburg Internal Medicine
- 14 Williams Street, P.O. Box 765, Williamsburg, MA 01096
- Get Directions
- phone: 413-268-3616
- fax: 413-923-9311
Expertise
Education
- Medical Education: University of Massachusetts Medical Center@, Unknown, 1994
Insurance
- Blue Cross Blue Shield
- Fallon Health
- Harvard Pilgrim Health Care
- MassHealth
- MassHealth ACO
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Tricare
- Tufts Health Plan
- United Health Care
- WellSense
Ratings & Reviews
4.9 out of 5
371 ratings, 154 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- Reviewed on 4/6/2026
Dr Muellner is a fine physician who listens , asks appropriate questions and offers concrete suggestions for how to address my medical needs. I am grateful that he is my physician
- Reviewed on 4/1/2026
Long time GP. Knows me very well. Responds to requests promptly, even while traveling through the Mass General Brigham app.
- Reviewed on 3/31/2026
Mine was a telephone visit. Because of an injury, I could not travel. under the circumstances, this was a good way to have an appointment.
- Reviewed on 4/2/2026
Dr Muellner is very thorough and listens.
- Reviewed on 4/1/2026
Always takes the time to listen, and adjust care as needed.
- Reviewed on 3/31/2026
Dr Muellner is great. He always makes me feel seen and heard. He's kind and knowledgeable.
- Reviewed on 3/30/2026
Dr. Muellner is the best Primary Care Physician I have ever known and is far better than things I hear about many local PCPs.
- Reviewed on 3/28/2026
A Winner
- Reviewed on 3/26/2026
Dr. Muellner always shows real concern for my condition and provides information about results and medication very promptly.
- Reviewed on 3/26/2026
Friendly, empathetic, good listener.
- Reviewed on 3/23/2026
Great doctor, and I recommend him to people. Very thoughtful and warm.
- Reviewed on 3/23/2026
Dr. Muellner strikes me an extremely competent and approachable doctor.
- Reviewed on 3/17/2026
Excellent. Knowledgeable, personable and too notch
- Reviewed on 3/19/2026
I stay with this practice because of the great care I am given.
- Reviewed on 3/19/2026
Doc Muellner always has answers to my questions.
- Reviewed on 3/18/2026
Comfortable
- Reviewed on 3/16/2026
I always feel safe in the care I get from anyone I have been assigned to in that group.
- Reviewed on 3/14/2026
Honesty. Willing to go against what other doctors advise.
- Reviewed on 3/11/2026
Excellent through many years. [redacted] Dr Mueller listens and gives his time. Smart. Sense of humor. The practice gives off a personal caring atmosphere. In no way fancy or slick.
- Reviewed on 3/13/2026
Dr. Muellner is excellent and the appointment went very well. The only glitch was the Zoom was not working properly, so we ended up doing a phone telehealth appointment. The only mild complaint I have is that sometimes the appointments feel rushed and the clinical notes sometimes need to be revised because they are incorrect. Otherwise, I absolutely love Dr. Muellner
- Reviewed on 3/12/2026
I'm a patient of Dr Muellner for well over 20 years and consider both him and his gallant staff like my extended family. This in it self should tell you exactly what one needs to know; God bless them all:)
- Reviewed on 3/11/2026
Great
- Reviewed on 3/11/2026
I'm very happy with my experiences with this provider.
- Reviewed on 3/10/2026
I have been a patient in this practice for over 45 years. I appreciate the care I get from both my NP and my physician.
- Reviewed on 3/10/2026
l feel blessed to have Hanno Muellner, M.D. as my primary care doctor. He is a wonderful human being, listens and cares.
- Reviewed on 3/10/2026
Sometimes, my doctor is in a hurry. But he always replies to my messages so does the NP, RN.
- Reviewed on 3/9/2026
Dr Muellner's made encouraging comments about my health and arranged for 2 follow-up tests.
- Reviewed on 3/9/2026
I have been with DR Muellner for 30yrs. I'm grateful to find him. He takes all the time he needs when dealing with me. Most others constantly look at the watch to keep 5min appointment. Not my Dr Muellner, he is a great person first and my great doctor 2nd. Thank you DR. Muellner
- Reviewed on 3/7/2026
They take good care of me
- Reviewed on 3/4/2026
It took over four months to get an appointment with this provider, my new PC; however, it was worth the wait: the doctor showed he cared about my health, he listened, was thorough, and showed a real humanistic side of himself.
- Reviewed on 2/25/2026
It was fine.
- Reviewed on 2/24/2026
He was great and very understanding and didn't rush the appointment along
- Reviewed on 2/25/2026
Hanno always listens to what I have to say and works with me to provide a solution
- Reviewed on 2/24/2026
Open to hearing about and was non-judgemental about how I was taking care of myself.
- Reviewed on 2/13/2026
Dr. Muellner is always on top of everything.
- Reviewed on 2/26/2026
the practice has proven worthy of our trust
- Reviewed on 2/25/2026
It was great
- Reviewed on 2/7/2026
I am very happy with the care I receive from Dr Muellner's office. He is a great listener. He seems truly locked in with me during the visit, he is NOT one of those Hand On The Doorknob Dr's, I never feel rushed or unheard. If I have a question that doesn't have an answer at his fingertips, he gets back to me promptly, which I much appreciate, I'm never just left hanging and I never have to chase him down. [redacted] At my age, [redacted], I appreciate a place to go for help where I'm confident he will provide it and I don't have to rehash my entire issue, from the start, all over again, with a stranger whom I'm just a number to. That is priceless and time saving for us all. [redacted] Everyone is awesome there, from the people who check you in, all the way up the line to Dr Muellner himself.
- Reviewed on 2/7/2026
Everyone I interacted with were wonderful and caring!
- Reviewed on 2/5/2026
Nice guy, listens carefully, addresses all my questions.
- Reviewed on 2/4/2026
It is always a good visit that takes care of my health needs.
- Reviewed on 2/4/2026
Always on time with answers to questions I was hoping to hear.
- Reviewed on 1/28/2026
Best Dr ever
- Reviewed on 1/21/2026
I am a new patient to this doctor. He took the time to learn about my life and medical history. Very comfortable visit.
- Reviewed on 1/18/2026
Excellent
- Reviewed on 1/17/2026
Great
- Reviewed on 1/16/2026
Yeah, Hanno Muellner listens very well and is a very good doctor. That's pretty much all I got to say.
- Reviewed on 1/15/2026
Exceptional care provider, colon, informed, caring, straightforward and plain spoken. Highly recommend him.
- Reviewed on 1/14/2026
Always a good experience
- Reviewed on 1/10/2026
This office should be the model for every care giver at MGB. Personal, comfortable, and prompt.
- Reviewed on 1/8/2026
I felt well cared for.
- Reviewed on 1/7/2026
Excellent provider. Explains things well. Listens to what I say.
- Reviewed on 1/5/2026
P Muellner has been my primary care doctor for well over 20 years. I've had no desire to leave him. He makes himself available. He's thoughtful. He's caring. He's genuine. He's authentic. He listens. He's a person that takes in information and is able to gather that information and develop a conversation based on that information that allows for best treatment possible. I've been dealing with a long, I've been on disability for the last two years and he has been very helpful in his ?
- Reviewed on 12/26/2025
He seemed kind and knowledgeable
- Reviewed on 12/20/2025
He is a pleasure to talk with and seems to be concerned about important things as well as being cordial
- Reviewed on 12/19/2025
I am totally happy with Dr. Muellner as my PCP & do recommend his practice to others.
- Reviewed on 12/16/2025
Hanno was really good. I had no complaints. Thank you.
- Reviewed on 12/11/2025
Dr. Muellner spent ample time to discuss my medical situation and in a caring manner.
- Reviewed on 12/6/2025
This office is always fantastic!
- Reviewed on 12/5/2025
Dr. Muellner and his staff have always been outstanding. Long before he was associated with Mass General
- Reviewed on 12/3/2025
Muell was informed and clear, and identified next steps (lab tests). This was an annual physical and went very smoothly.
- Reviewed on 11/29/2025
I have been seeing Dr. Muellner for years. This experience was the same as usual. He is always attentive, professional and caring. I couldn't ask for a better family care provider.
- Reviewed on 11/19/2025
Genuine Brilliant Real Honestly Care
- Reviewed on 11/19/2025
Dr Muellner is a fantastic md!
- Reviewed on 11/18/2025
Very comfortable with this provider. Pleased to continue.
- Reviewed on 11/13/2025
Excellent overall!
- Reviewed on 11/10/2025
thoughtful listener
- Reviewed on 11/11/2025
As always, when you come in, the receptionist are always very pleasant. The nurses are always pleasant and listen to what you have to say and the doctor goes over everything that is going on and listens to my questions and answers them. I would recommend this office to anybody.
- Reviewed on 11/10/2025
Very good
- Reviewed on 11/5/2025
I have complete trust in my doctor and the whole team! I can't recommend them highly enough.
- Reviewed on 11/7/2025
Dr. Muellner is a very kind, compassionate, caring doctor. He listens to his patients well, for me anyways, and he shows that he generally cares for the people that he sees. I would recommend him to all my friends and family. Only downfall is I live 35 minutes away from him. I wish I lived closer, but I won't change him for nobody. I'll take that trip every time.
- Reviewed on 11/5/2025
Great person.
- Reviewed on 11/1/2025
Everything is run well I appreciate all of them
- Reviewed on 11/1/2025
Always a positive and informative visit
- Reviewed on 10/30/2025
I received valuable perspective on the issue and was given a choice of how to proceed.
- Reviewed on 10/25/2025
Dr Muellner and his staff are excellent, professional and caring healthcare providers. I feel fortunate to have them.
- Reviewed on 10/25/2025
Always in a good mood which makes the appointment go much easier.
- Reviewed on 10/24/2025
Hanno was very, very good and is interactive with his patients, at least with me. He understands and has a grasp of my situation and my health, and I am very comfortable with him.
- Reviewed on 10/16/2025
Great Doctor
- Reviewed on 10/15/2025
Dr. Muellner is always great. Appointments are never rushed. Explains everything in great detail. Comes up with a practical and complete plan.
- Reviewed on 10/15/2025
Dr Muellner has been my PCP for almost 40 years. He has always been the best doctor I have ever had. He knows me well and pays attention to everything I bring him. Dr Muellner has always been outstanding.
- Reviewed on 10/13/2025
Always helpful. He cares about my health.
- Reviewed on 10/13/2025
Good.
- Reviewed on 10/9/2025
Yes, definitely!
- Reviewed on 10/9/2025
Hanno is the best provider I've ever had. She listens extremely well and is extremely responsive to understanding the latest research and applying that to me at my complex state. So top marks all around.
- Reviewed on 10/11/2025
I love the accessibility of this provider & their approach to care giving in their community. In my opinion they are what other practices should aspire to be.
- Reviewed on 10/7/2025
Mr. Muellner is an excellent, responsive, and compassionate doctor who takes the time to find the best options for dealing with complex medical / emotional situations.
- Reviewed on 9/26/2025
Very knowledgable, and professional.
- Reviewed on 9/25/2025
Always kind, compassionate, courteous, respectful and professional! Dr Muellner is awesome!
- Reviewed on 9/24/2025
Excellent follow-up; Dr. Muellner called on the weekend after my bladder ultrasound test, to help me plan for next steps.
- Reviewed on 9/24/2025
I was able to be seen same day for an acute problem. Imaging ordered and performed the next day. I received a follow up results call within 24 hrs.
- Reviewed on 9/22/2025
I just want to say that I think Dr. Muellner is a wonderful doctor, that he's respectful, he listens, he really tries to figure out what might be the best thing and the best course for you to go ahead and take care of whatever issue you might have. I try to recommend him to everyone, [redacted]
- Reviewed on 9/18/2025
Very professional in a down to earth way!
- Reviewed on 9/18/2025
Dr Muellner is a very fine physician. I appreciate his medical knowledge and his professional and relaxed style. I am grateful that he is my internist.
- Reviewed on 9/17/2025
All good, annual general check up visit
- Reviewed on 9/18/2025
Just what I was looking for!
- Reviewed on 9/13/2025
Need more like them.
- Reviewed on 9/10/2025
good communication
- Reviewed on 9/11/2025
Dr Muellner is always an excellent physician. I value him as my PCP
- Reviewed on 9/8/2025
Terrific
- Reviewed on 9/8/2025
Love my Primary Doctor. He knowledgeable and available
- Reviewed on 9/6/2025
Yeah, Dr. Muellner is just the best. I really enjoy our times together and stuff. And the other thing I wanted to say was I didn't listen in the beginning for the whole thing. I thought three was the best answer. It's been all fours. It's definitely, yes. Everything in that office, the receptionist, the nurse, the doctor, everything.
- Reviewed on 9/5/2025
I've been seeing Dr. Muellner for years, I've lost count of how many... He's a kind and sympathetic man and I trust his opinion completely. I feel as if I can talk to him about anything. I feel lucky that he's my doctor.
- Reviewed on 8/30/2025
All is good
- Reviewed on 9/3/2025
Wonderful care.
- Reviewed on 8/28/2025
The doctor shows real concern for my well being.
- Reviewed on 8/25/2025
Dr Muellner and his staff are fantastic!!!!!!!!
- Reviewed on 8/24/2025
I am 69 years old and this may be the first physician that actually listens to me.
- Reviewed on 8/7/2025
All aspects of my appointment were handled excellently/professionally.
- Reviewed on 8/6/2025
Very good.
- Reviewed on 8/6/2025
Excellent care, easily scheduled
- Reviewed on 8/4/2025
He's the best in every way
- Reviewed on 8/2/2025
I have been with Dr Muellner for over 20yrs. I consider myself very lucky to have him.
- Reviewed on 7/30/2025
Dr. Hanno Muellner has always been an excellent care provider to me as well as other family members.
- Reviewed on 7/30/2025
As always, he was very interested in my conditions and what I had to tell him about it and in following up on it
- Reviewed on 7/30/2025
I get my test results through the portal.
- Reviewed on 7/31/2025
I have been a patient of Dr. Muellner for many years. Everytime I have an appointment, the visit is always a pleasure. He is an amazing doctor and I trust him completely.
- Reviewed on 7/26/2025
knowledgeable, professional excellent care and advise
- Reviewed on 7/24/2025
I always feel very taken care of by everyone in this practice.
- Reviewed on 7/19/2025
The Williamsburg and surrounding area is fortunate to have Dr Hanno Muellner.
- Reviewed on 7/18/2025
I had a very hard time with the receptionists following up on my phone calls, or returning a phone call to me at first. Days went by before I called again and Stephanie was able to answer all my questions and schedule an appointment.
- Reviewed on 7/18/2025
This provider is always a good listener, takes concerns seriously and is encouraging
- Reviewed on 7/16/2025
I feel I am always listened to.
- Reviewed on 7/17/2025
The reason I like Dr. Muellner is that he and I can have a dialogue about my health as opposed to him just saying his side only. So he listens to what I have to say and we have a discussion about it. And I think that's rather unique in the medical field.
- Reviewed on 7/14/2025
Not to much. I was satiisfied
- Reviewed on 7/14/2025
Outstanding. Explains clearly and listens carefully. Recognizes my particular situation. Is reasonable, realistic. Just overall excellent.
- Reviewed on 7/13/2025
Dr Muellner was very courteous, thorough and patient.
- Reviewed on 7/9/2025
Have known him for a long time. Value his opinion and care.
- Reviewed on 7/9/2025
excellent
- Reviewed on 7/7/2025
He explains things clearly and asks what else I need
- Reviewed on 7/7/2025
Dr Muellner is a fabulous doctor. He still knows how to talk to people as if we were all human beings. Many doctors seem to lose that ability somewhere along the way.
- Reviewed on 7/7/2025
Dr Muellner always listens attentively to what I tell him.
- Reviewed on 7/5/2025
I believe that the doctor could have been more interested in my physical being and talked to me more about my question about my aging body. I am not decrepit but I worry about aging and death. I want to know I am in good health, particularly for my age. It helps my outlook.
- Reviewed on 7/7/2025
Dr Muellner is very attuned to his patients and I very much appreciate having him as my PCP!
- Reviewed on 7/4/2025
I trust that Hanno Muellner cares about my well-being and that he is knowledgeable. He approaches things with a sense of humor, but he's very intelligent and he's a good listener.
- Reviewed on 7/2/2025
Excellent Doctor
- Reviewed on 7/2/2025
The team is awesome. Thank them for me..
- Reviewed on 6/30/2025
Dr. Muellner is always terrific, [redacted]
- Reviewed on 6/28/2025
Dr. Muellner is very thorough and ansers all my questions and concerns.
- Reviewed on 6/25/2025
Always a pleasant experience
- Reviewed on 6/24/2025
First rate all aro
- Reviewed on 6/22/2025
I've always received good care from this provider. I have no hesitation about contacting them for any problem, and they are very responsive.
- Reviewed on 6/21/2025
Always pleasent and helpful.
- Reviewed on 6/11/2025
Fabulous!
- Reviewed on 6/15/2025
Always professional and courteous, and with my best interests in mind.
- Reviewed on 5/28/2025
The best! He's both intelligent and congenial, relates well to patients. Never in a hurry to get on to the next case.
- Reviewed on 5/28/2025
Dr. Muellner was friendly and attentive, completely satisfied my needs
- Reviewed on 5/26/2025
I really like the doctor and the staff. I think they are knowledgeable, kind and helpful. A good experience overall.
- Reviewed on 5/25/2025
I had a very good visit with the provider.
- Reviewed on 5/24/2025
Hanno and his staff are very responsive and empathetic, as well as totally professional overall
- Reviewed on 5/22/2025
I'm very pleased with the service that I get every time I go to Dr. Muellner's office. The receptionists, nurses, and the PAs and doctors are always nice. I would recommend them to anybody that I know if they were in the need of a new physician. Thank you.
- Reviewed on 5/21/2025
Superb ! Knowledgable Kind Doctor. Have been seen by him for years.
- Reviewed on 5/23/2025
My experience with this provider has always been great.
- Reviewed on 5/21/2025
Hanno and his whole crew have made going to the doctor very stress free, comfortable, and a respectful experience. I am fortunate to have them.