Highlights
Age Groups Seen
- Adults
- Geriatrics
Languages
- English
Gender
MaleLocations
- Mass General Brigham Nephrology Clinic
- 260 Merrimac Street, Newburyport, MA 01950
- Get Directions
- phone: 978-499-7200
- fax: 978-499-7488
Expertise
Education
- Fellowship: Beth Israel Deaconess Hospital, Nephrology, 2007
- Residency: Boston Medical Center (BMC), Internal Medicine, 2004
- Medical Education: Emory University, 2001
Board Certifications
- Nephrology: American Board of Internal Medicine, 2007
- Internal Medicine: American Board of Internal Medicine, 2007
Insurance
- Aetna
- Blue Cross Blue Shield
- Blue Cross Blue Shield Medicare
- Blue Cross Blue Shield NH
- Cigna
- Commonwealth Care Alliance
- Coventry
- Fallon Health
- Harvard Pilgrim Health Care
- Humana
- Mass General Brigham Health Plan
- MassHealth
- Medicare
- Medicare ACO
- Multiplan
- Railroad Medicare
- Senior Whole Health
- TriCare
- Tufts Health Plan
- Tufts Medicare Preferred
- Tufts Public Health Plan
- United Health Care
- Wellpoint
- WellSense
Ratings & Reviews
4.8 out of 5
382 ratings, 145 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 2/4/2026
Dr Tarkan is awesome. He has watched out for my health for many years . He is knowledgeable and down to earth. Excellent
- Reviewed on 2/2/2026
A great experience. Dr. Tarkan is efficient and knowledgeable.
- Reviewed on 1/29/2026
Dr. Tarkan was punctual as always. He listened to me and provided me with excellent care and guidance. I only see him annually, but he always warmly greets me and is very engaging. Highly recommend him!
- Reviewed on 1/27/2026
Greeted me warmly and explained in words I could understand
- Reviewed on 1/28/2026
Up beat personality. Explanations were clear and concise.
- Reviewed on 1/30/2026
This care provider has been the best I have ever known!
- Reviewed on 1/27/2026
Excellent doc -smart, and always prepared
- Reviewed on 1/21/2026
He s an excellent doctor. Explains everything in a way I can understand.
- Reviewed on 1/18/2026
Very professional and friendly
- Reviewed on 1/17/2026
My appointment with Dr. Tarkan went very well. The nurses were very polite. Dr. Tarkan explained to me what was going on and how good I was doing and that he would see me again in six months and keep up the good work. So I was very happy with my visit and I would highly recommend him to anyone of my friends or family. Thank you very much.
- Reviewed on 1/14/2026
Excellent
- Reviewed on 1/14/2026
Totally professional, knowledgeable and caring
- Reviewed on 1/13/2026
He is the best and I have confidence he is providing the best care possible, I always have a positive experience when visiting this office.
- Reviewed on 1/11/2026
Does not spend a lot of time, seemed very rushed. [redacted] I respect Joshua Tarkan but seems like because my bloodwork is usually good, he is on his way out. Also seems like I'm never asked how my over heath is.
- Reviewed on 1/12/2026
I feel Dr. Tarkan is very competent.
- Reviewed on 1/11/2026
I always enjoy seeing Dr Tarkan.
- Reviewed on 1/5/2026
He was just a little too quick
- Reviewed on 1/3/2026
The team was great, specifically receptionist she went out of her way to help with my opponents.
- Reviewed on 12/29/2025
I felt everyone had my best intrest at heart.
- Reviewed on 12/25/2025
Dr. Tarkan is easy to talk to about my kidney issues...he explains what to be careful of regarding my kidney health...mostly i rally appreciate his concern about the rest of my medical issues as well...
- Reviewed on 12/15/2025
Dr. Tarkan is very professional and well prepared.
- Reviewed on 12/14/2025
All Great !
- Reviewed on 12/12/2025
He's ridiculously smart.
- Reviewed on 12/11/2025
Dr. Tarkan is very personable and straight forward. He explains everything in a way you understand. Such a great guy.
- Reviewed on 12/4/2025
Very clear. I felt lucky to see this provider.
- Reviewed on 11/30/2025
It was quick and easy.
- Reviewed on 11/26/2025
Dr. Tarkan is caring, always well versed on my condition and extremely efficient. I appreciate having him as a physician.
- Reviewed on 11/23/2025
Very nice and very knowledgeable. Felt extremely comfortable with him.
- Reviewed on 11/22/2025
The doctor and staff always treat me as a person and not just as a medical condition.
- Reviewed on 11/20/2025
I've seen Dr. Tarkan for several years. He's always explained any questions that I may have had.
- Reviewed on 11/12/2025
More time to add more detail to my medical background. More specifice regarding my diagnosis and how to manage it
- Reviewed on 11/12/2025
Very good experience. Dr Tarkan is very kind and efficient.
- Reviewed on 11/12/2025
The doctor is great and his staff is very good also
- Reviewed on 11/13/2025
I felt that he knew what he was talking about.
- Reviewed on 11/10/2025
Excellent appointment with Doctor Tarkan and his nurse and his office staff. My visits with Doctor have always been excellen
- Reviewed on 11/8/2025
He's the best!
- Reviewed on 11/6/2025
This was my first appt. with Dr. Tarkan and I was very impressed with him and his staff.
- Reviewed on 11/5/2025
Provider told me he wasn't the doctor I need - he is a kidney function doctor I need a neurologist. I was not told how to get to the correct doctor before he left the room.
- Reviewed on 11/3/2025
He was very professional treating me with courtesy and kindness. A very good doctor.
- Reviewed on 10/30/2025
Dr Tarkan made me feel that my condition is manageable and that he is there for me. I feel as though I am good hands.
- Reviewed on 10/30/2025
All services were great
- Reviewed on 10/30/2025
I truly believe that Dr Tarkan genuinely cares about my health, and has a sincere interest in my continued wellbeing.
- Reviewed on 10/27/2025
Dr. Tarkan was very pleasant and helpful and explained everything I needed to know and even asked if I had questions. Very professional and kind. I would highly recommend him.
- Reviewed on 10/26/2025
This was my first visit, and I felt more informed when I left than when I arrived.
- Reviewed on 10/28/2025
Dr Tarkan is an excellent physician, remarkable in his patient care. He has been my nephrologist for a few years now. I moved to NC [redacted] but flew up for my annual visit with him and will do so again next year.
- Reviewed on 10/22/2025
Dr Tarkan was wonderful. He had reviewed my medical history, and asked about any current issues. He verified my medication regime. He discussed results of recent US and UA. He elicited inquiries from me, was patient in explanations, and direct with recommendations and expectations. I am very impressed with Dr Tarkan, and grateful for Jane Cleveland's referral.
- Reviewed on 10/22/2025
Dr Tarkan is well informed and attentive. He's extremely efficient and professional. He explains things and is always open to questions and concerns. I have a lot of respect for him.
- Reviewed on 10/20/2025
Very positive experience
- Reviewed on 11/2/2025
It was comfortable and he is a good guy
- Reviewed on 10/19/2025
Always knowledgeable, and professional!
- Reviewed on 10/13/2025
Thank you for excellent care
- Reviewed on 10/12/2025
Dr. Tarkan was professional, friendly, and spent his time answering my questions. For my first experience with him, I was very pleased.
- Reviewed on 10/9/2025
Dr Tarkan lets me know everything is under control. If any other signs of my illness, he will take care of me.
- Reviewed on 10/8/2025
Dr. Tarkan is great.
- Reviewed on 10/8/2025
He runs his office very efficiently keeping on time for all patients. Very friendly and professional.
- Reviewed on 10/9/2025
The Provider asked me to Send Him a List of my Current Medications, which I am in the process of doing, but I need to Connect with CVS & Walmart to have them Print a List that I will need to pick up.
- Reviewed on 10/8/2025
He seemed 2 dismiss OXALATES H didn't see the link.between, kidney stones no gall bladder hypothyroidism, hashimotos, meciterrean thalassemia minor. Type 2 diabetes...
- Reviewed on 10/6/2025
Always feel this office is very supportive.
- Reviewed on 10/6/2025
Dr. Tarkan was great. Covered everything. His nurses were great as well.
- Reviewed on 10/6/2025
satisfied with the experience
- Reviewed on 10/6/2025
Dr was very thorough and on time. Great experience.
- Reviewed on 10/6/2025
LISTEN TO MY LUNG AND THEN i AM DONE. He provides very little help with me I really don't thing he care for me as a patient. He is a funny doctor he then tells me I shoul come back in 6 month because kidney levels are up. [redacted].
- Reviewed on 10/5/2025
Dr. Tarkan is extremely professional and always on time. I am very fortunate to have him as my physician.
- Reviewed on 10/4/2025
Dr. Tarkan is always on top of my overall health status. It's always interesting to talk to him and learn a little more about my health!
- Reviewed on 10/4/2025
He's the best!
- Reviewed on 9/27/2025
Dr. Tarkan takes time to discuss my case, and discusses it in terms that are understandable.
- Reviewed on 9/24/2025
Everything went well
- Reviewed on 9/24/2025
Thorough. Efficient. Reassuring.
- Reviewed on 9/25/2025
Trustworthy and honest
- Reviewed on 9/22/2025
Excellent Doctor. Very knowledgeable and caring
- Reviewed on 9/21/2025
No, I appreciate him. He's very good and the nurses was good. Everybody was good there. I don't have any problem with that outfit. Okay?
- Reviewed on 9/21/2025
Provided me with plenty of information, and advice about my condition
- Reviewed on 9/17/2025
I was very satisfied.
- Reviewed on 9/18/2025
Dr. Tarkan was very thorough and polite. He explained what he was planning to do. He made me feel at ease.
- Reviewed on 9/17/2025
Very courteous , respectful and knowledgeable.
- Reviewed on 9/3/2025
I have been seeing Dr. Tarkan for several years. He helped me get my high blood pressure under control, and I enjoy my brief but rewarding annual visits with him.
- Reviewed on 9/4/2025
I am impressed with Dr Tarkan. He remembers everything about my situation and I only see him 1x a year.
- Reviewed on 9/3/2025
Solid. Assuring. [redacted]
- Reviewed on 9/4/2025
He was thorough and informative. He asked if I had any questions and answered the one I had.
- Reviewed on 8/27/2025
Dr. Tarkan is outstanding.
- Reviewed on 8/24/2025
I know dr. Tarkan . he is great nephrologist.
- Reviewed on 8/22/2025
I liked his efficiency. I can see his quick delivery being a challenge for older people and or people that aren't as up on advocating for their medical health as I tend to be.
- Reviewed on 8/20/2025
Great Dr. tells me everything I need to know!
- Reviewed on 8/20/2025
Dr. Tarkan was very thorough, took the time to explain things well and seemed to take a sincere interest in my health.
- Reviewed on 8/17/2025
Always courteous, always on time and everyone is cheerful.
- Reviewed on 8/17/2025
I believe Dr.Tarkan is an excellent physician and I trust he will take good care of me.
- Reviewed on 8/16/2025
He is very thorough and explained my issue so I could understand.
- Reviewed on 8/14/2025
He didn't seem like he was interested in my care. I think he had other things on his mind. I was not impressed with my appointment that day.
- Reviewed on 8/13/2025
Very caring
- Reviewed on 8/11/2025
The staff was courteous and upbeat . And as always Dr. Tarkan was enthusiastic...
- Reviewed on 8/10/2025
Great Service ??
- Reviewed on 8/13/2025
All pleasant.
- Reviewed on 8/8/2025
I have visited Dr. Tarkan. He is a very, very professional doctor. I would like to have my special doctor to visit him.
- Reviewed on 8/6/2025
Everyone was great, Thank you
- Reviewed on 8/4/2025
I JUST WISH I COULD HAVE SEEN THE DOCTOR SOONER.
- Reviewed on 8/4/2025
He listened to me
- Reviewed on 8/6/2025
This doctor Tarkan was very rude, disrespectful, and seemed like he was in a rush and didn't really care to hear what we had to say about my father. His medical conditions are very, very, very bad. And he just seemed like he didn't care as long [redacted]
- Reviewed on 8/3/2025
Dr T is awesome. He has been proactive in my care management. He is knowledgeable and caring
- Reviewed on 8/3/2025
Ladies at the front desk: so kind, helpful, and pleasant. Assistant: Personable, professional, and makes you feel relaxed.
- Reviewed on 8/2/2025
Dr Dr tarkins office has always been very prompt very polite very respectful and lets me know exactly what is going on what labs I'm going to have and what the results are obviously when they come in I would highly recommend him
- Reviewed on 7/29/2025
The receptionist was one of the nicest I have ever encountered!
- Reviewed on 7/31/2025
The doctor took the time to explain my illness and recommend alternative treatments.
- Reviewed on 7/27/2025
Had a good visit with Dr. Tarkan. He was clear in what I had to do
- Reviewed on 7/29/2025
I truly believe that Dr. Tarkan is the reason that I'm alive today. He has been my most trusted doctor for our entire experience as patient and doctor. As we all know, trust is crucial! [redacted]
- Reviewed on 7/26/2025
most satisfied
- Reviewed on 7/9/2025
Dr Tarkan makes me feel like we are a team. He always offers good suggestions.
- Reviewed on 7/7/2025
Dr Tarkan was attentive and honest. He did not hurry the appointment and answered my questions. This was a better visit than previous days.
- Reviewed on 7/7/2025
Doctor was professional & caring. Asked if we had any questions. He would touch base with us after reading all the labs.
- Reviewed on 7/5/2025
I like this provider more each time I see him. I'm glad I found him!
- Reviewed on 7/5/2025
Very professional, very kind very nice person. Left appointment feeling good and healthy
- Reviewed on 7/5/2025
Very knowledgeable
- Reviewed on 6/26/2025
As always, visiting this office is the blueprint for how it should be done. I am always greeted warmly and quickly. Never a long wait and the nurse/PA is always cheerful and helpful. Never a long wait for Dr. Tarkan and he is perhaps the most compentent and thorough doctor I have ever had, and on top of it I always get a leetter from Dr. Tarkan summarizu=ing my visit and the subsequernt bloodwork. I think someone should film a day in this office and it should be shown a medical schools on how to effectively run a physicians office.
- Reviewed on 6/23/2025
I've been seeing him for years. Always a pleasure!
- Reviewed on 6/24/2025
He is terrific.
- Reviewed on 6/19/2025
Dr. is extremely polite.
- Reviewed on 6/19/2025
Got there early, they took me right away. Nurse came in, did his thing very carefully and conscientiously. The doctor came in a couple of minutes later, did the same thing. Very pleased, very happy. Communication was great.
- Reviewed on 6/18/2025
He was thorough, respectful and knowledgeable
- Reviewed on 6/18/2025
Very open and friendly
- Reviewed on 6/18/2025
Dr Tarkan. Was good visit
- Reviewed on 6/16/2025
Fine
- Reviewed on 6/16/2025
Dr Tarkan is always well prepared coming into the visit, and utilizes the time well to discuss an changes in my father's condition and any new concerns. Not a lot of time is wasted with redundant questions. His medical assistant is expedient but also thorough with gathering any needed information. The front desk staff is courteous and ensures timeliness/availability of staff. The lab there is very convenient and good at obtaining samples. My father is doing well and not many changes were needed. Visit was very pleasant.
- Reviewed on 6/16/2025
Dr Tarkan is always a consummate professional. He is aware of my concerns and always has solutions & recommendations that are in my best interest. Dr Tarkan always takes all the time that I need. I have complete confidence in him & his ability to give me the best care possible.
- Reviewed on 6/12/2025
Dr. Tarkan is kind, caring and extremely thorough. He listens and answers any questions I have.
- Reviewed on 6/12/2025
Couldn't have been better.
- Reviewed on 6/11/2025
It was very good experience.
- Reviewed on 6/5/2025
Professional and dependable. Dr Tarkan is the best.
- Reviewed on 5/28/2025
I feel very confident about Dr. Tarkan. He's always aware of what's going on with me health wise and always asks questions and follows up on issues of concern to me like sodium and potassium levels. And he always answers my questions.
- Reviewed on 5/26/2025
Dr. Tarkan is very thorough and I always feel comfortable seeing him. He is very knowledgeable and answers all my questions!
- Reviewed on 5/26/2025
Dr. Tarkan was the very best, most prepared about my case, and most knowledgeable I've ever met!
- Reviewed on 5/19/2025
excellent
- Reviewed on 5/19/2025
He was to the point, easy to talk with and very knowledgeable.
- Reviewed on 5/18/2025
Dr. Tarkan has been a reliable, consistent follower of my kidney functions.
- Reviewed on 5/10/2025
Excellent. I am fortunate. to have Doctor Tarkan as my physician.
- Reviewed on 5/7/2025
My visit was not stressful and I felt that everything was explained to me about my medical condition clearly by the Doctor
- Reviewed on 5/8/2025
great reputation
- Reviewed on 5/3/2025
I would like to say that he was very informative and helpful with what I was there for,and helpful in letting me know what he was looking forward to doing in my future
- Reviewed on 5/1/2025
very punctual office Doctor is excellent
- Reviewed on 4/21/2025
Efficient, articulate, knowledgeable.
- Reviewed on 4/21/2025
Efficient, professional, friendly, knowledgeable, caring.
- Reviewed on 4/16/2025
Also happy to see Dr. Tarkan, and staff.
- Reviewed on 4/17/2025
Dr. Tarkan is always exceptional. He's always on time and he's excellent. I would recommend him highly.
- Reviewed on 4/21/2025
Dr Tarkan Inspired confidence and a detailed plan of care for follow up.
- Reviewed on 4/14/2025
Very friendly and listens when you talk
- Reviewed on 4/4/2025
This provider is the best No complaints!
- Reviewed on 3/31/2025
I've seen Dr. Tarkan for many years and don't think I could do better. Since he first diagnosed my hyperaldosterism ~ 15 years ago I trust him to watch my remains kidney. I am especially happy that he is now affiliated with MGH; it makes inter- communications between me, him and my other MGH doctors so much easier.