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Paul R Cass

Paul R Cass, DO

Sleep MedicineNeurology

Highlights

Age Groups Seen

  • Adults
  • Geriatrics

Languages

  • English

Gender

Male

Locations

  1. Mass General Brigham Neurology Clinic
  2. Mass General Brigham Neurology Clinic

Expertise

Education

  • Fellowship: Boston University Medical Center, Neurology, 1982
  • Residency: Boston City Hospital, Neurology, 1981
  • Residency: Boston University Medical Center, Neurology, 1979
  • Residency: University of Connecticut Health Science Center, Pediatrics, 1978
  • Internship: Garden City Hospital, 1976
  • Medical Education: Kansas City College of Osteopathic Medicine, 1975

Board Certifications

  • Sleep Medicine: American Board of Psychiatry and Neurology, 2009
  • Neurology: American Board of Psychiatry and Neurology, 1982

Insurance

This provider may accept more insurance plans than shown. Please call the practice to find out if your plan is accepted.
Search plans
  • Aetna
  • AmeriHealth Caritas New Hampshire
  • Blue Cross Blue Shield - Federal
  • Blue Cross Blue Shield ME
  • Blue Cross Blue Shield NH
  • Cigna
  • Community Health Options
  • CorVel Workers Comp
  • Coventry
  • Harvard Pilgrim Health Care
  • Humana
  • Martin's Point
  • Mass General Brigham Health Plan
  • Medicaid ME
  • Medicaid NH
  • Medical Network
  • Medicare
  • Medicare ACO
  • Meridian Health Plan
  • Multiplan/PHCS
  • MVP
  • NH Healthy Families
  • Railroad Medicare
  • TriCare
  • Tricare/ HealthNet Federal Services
  • Tufts Health Plan
  • United Health Care
  • WellCare
  • WellSense NH

Ratings & Reviews

4.8 out of 5

138 ratings, 59 reviews

The 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.

How likely would you be to recommend this provider to your family and friends?
Search reviews
  • Reviewed on 1/22/2026

    He was very well prepared and informative.

  • Reviewed on 1/21/2026

    He was kind and relaxed. His method of providing information about my issue aligned with how I consume data and information. He did not seem rushed and was able to complete the appointment efficiently and completely.

  • Reviewed on 1/19/2026

    Dr Cass is an excellent educator. He took time to explain my lab results, treatment options, and provided information above and beyond what I expected to make sure I was making an informed decision about my care.

  • Reviewed on 1/12/2026

    Dr Cass was wonderful. He spent the time and the effort to explain everything to us thoroughly and with compassion.

  • Reviewed on 1/7/2026

    Very good experience with Dr. Cass.

  • Reviewed on 1/5/2026

    Thoughtful and responsive. Very personable

  • Reviewed on 1/1/2026

    Dr. Cass was very prepared for my visit. He had clearly reviewed my medical records and had a good understanding as to some of my medical conditions. He was very thorough with respect to the reason for which I was there regarding neurological sleep study and the staff were all very good as well. Thank you.

  • Reviewed on 12/29/2025

    He was extremely nice and took his time with my needs and questions.

  • Reviewed on 12/25/2025

    great

  • Reviewed on 12/25/2025

    Dr. Cass is excellent, listens, is patient and I feel fortunate to have him as my doctor.

  • Reviewed on 12/24/2025

    always friendly, and a good listener

  • Reviewed on 12/22/2025

    Dr. Cass spent a LOT of time with us, explaining things. He was straightforward and extremely helpful in helping me make a decision.

  • Reviewed on 12/22/2025

    Yes, this is [redacted]. I've met with Dr. Cass several times. He's the epitome of an excellent doctor in that he's friendly and courteous and professional and he explains things very clearly in detail and gives me good recommendations of how I can improve what I'm doing and also he has good feedback for my whole period of time between our visits and what I was doing and what I could do to improve and I would highly recommend him. He's very patient and very courteous, knowledgeable and professional and I had a great visit. Thank you.

  • Reviewed on 12/20/2025

    I see this doctor annually, but I still had the sense that my issues were important to him.

  • Reviewed on 12/15/2025

    DR CASS is always pleasant and addressed all my concerns.

  • Reviewed on 12/15/2025

    Dr. Cass and I have, I've been seeing him for at least 35 years and he's always been very helpful, knowledgeable, kind, caring, offered suggestions and he's just been a great doctor.

  • Reviewed on 12/11/2025

    Dr. Cass is great, visit was exactly what I needed. [redacted]

  • Reviewed on 12/11/2025

    It was really refreshing that Dr. Cass took as much time as he needed to go over my results and what we were going to go forward with. I was very happy to see him. Thank you.

  • Reviewed on 12/7/2025

    Dr. Cass was good at explaining everything to me

  • Reviewed on 12/6/2025

    Great service, knowledge, personal care.

  • Reviewed on 11/26/2025

    Dr. Cass is always up ro date with things. Discussed some changedms to be made.

  • Reviewed on 11/26/2025

    I feel very comfortable with Dr Cass

  • Reviewed on 11/22/2025

    Dr. Cass has provided me with excellent care for my sleep apnea and provided me with new BPAP equipment and accessories.

  • Reviewed on 11/19/2025

    Excellent!

  • Reviewed on 11/19/2025

    He came across as very arrogant. I got the sense that he didn't believe me or that I was lying or faking my symptoms. I don't feel like he really understood why I was there. It felt like I was wasting his very important time. [redacted]

  • Reviewed on 11/16/2025

    Very good visit.

  • Reviewed on 11/15/2025

    Professional and courteous as always!

  • Reviewed on 11/14/2025

    I learned a great deal about my current medications, this provider's recommendations for changes, and plans for transitioning. I appreciate the thorough explanations he provided and the time spent.

  • Reviewed on 10/27/2025

    They weren't provided with the records that they needed when the referral was made, but the doctor took his time going over everything with me and planned to get the records to follow up. So he really just took his time to listen to me and help me and help understand the situation and was going to make sure he got the records to make informed decisions. And I thought he handled it really well considering the records would have been helpful to navigate in the moment, but he was really kind throughout the whole thing, as well as the MA.

  • Reviewed on 10/22/2025

    I felt very comfortable with Dr. cass , very thorough and explained everything clearly!!

  • Reviewed on 10/19/2025

    Respectable

  • Reviewed on 10/14/2025

    Dr. Paul Cass, is very professional and offered his opinions based on facts and data. Dr Cass is valuable member of the medical team. Thank you

  • Reviewed on 10/6/2025

    Dr. Cass has been a tremendous gift to me in treating my Restless Leg Syndrome. His knowledge and willingness to treat me with cutting edge therapy over the past 10 years has saved me trips to Boston and given me a local doctor I trust.

  • Reviewed on 9/29/2025

    I had a wonderful experience with Dr. Cass. He was patient and kind and explained everything to me. I have been telling everyone who will listen about how wonderful my experience was. All the staff were wonderful.

  • Reviewed on 9/28/2025

    Dr. Cass is wonderful. He talks so that you can understand him. He is very personable and makes sure that he knows what has been going on.

  • Reviewed on 9/21/2025

    Dr. Cass is the most well prepared doctor i have ever worked with. I really appreciate him

  • Reviewed on 9/18/2025

    Very thorough.

  • Reviewed on 9/18/2025

    Recommend this place highly

  • Reviewed on 9/15/2025

    Dr Cass was fantastic

  • Reviewed on 9/15/2025

    Dr. Cass is exceptional- listens, explains, asks good questions and is extremely knowledgeable.

  • Reviewed on 8/27/2025

    Unlike most neurologists I have seen, Dr. Cass knew what he was talking about. Our conversation was educational and very helpful for me.

  • Reviewed on 8/10/2025

    Enjoy conversations with Dr. Cass

  • Reviewed on 7/15/2025

    Always prompt and knowledgeable

  • Reviewed on 6/21/2025

    He was very knowledgeable and understanding. He also took his time.

  • Reviewed on 6/18/2025

    Dr. Cass is professional, thorough, and caring

  • Reviewed on 5/28/2025

    Easily broke things down for me so I could understand them, offered advice that was reasonable, genuinely interested in what I had to say.

  • Reviewed on 5/28/2025

    Fantastic group of professionals we are lucky to have right here.

  • Reviewed on 5/29/2025

    Dr. Cass spent a great deal of time with me reviewing all the medications I was on and I was very comfortable with him. I feel that he understood me and listened to me. I was very impressed with him and hope that he will continue seeing me in the future.

  • Reviewed on 5/28/2025

    I have been seeing Dr Cass for many years and have always felt that I receive excellent care.

  • Reviewed on 5/26/2025

    Dr. Cass explained everything so that my husband and I understood what to expect with sleep apnea. I felt much better when I left. Relieved!

  • Reviewed on 5/19/2025

    Very good

  • Reviewed on 5/11/2025

    Dr. Cass was very professional. He explained everything. We had a long time to talk about and move through what the possibilities and medications could possibly be. And he explained everything so that I understood. He made sure I understood. He's a wonderful listener. And I'm glad to have him as my doctor.

  • Reviewed on 5/3/2025

    I was so impressed with Dr. Cass. He came prepared for me. He had looked at my previous results from my CPAC, had it written out. I was so impressed with the time he gave me. He spent an hour with me as a new patient. He went through everything. It was more and better care than I could have ever wished for. I was just so thankful to meet him. And his intelligence and his background and knowledge is so useful in helping me improve my health.

  • Reviewed on 5/1/2025

    He is excellent, explains everything very clearly.

  • Reviewed on 4/23/2025

    Does a great job of explaining what we are doing and the treatment.

  • Reviewed on 4/17/2025

    He's very good. He is very systematic and seems to know what he's doing. He took more time to explain things than anyone else has with respect to the issues we were dealing with in quite a few years. Overall, my impression was very favorable.

  • Reviewed on 4/14/2025

    Very pleasant. Gave his option on my concerns.

  • Reviewed on 3/31/2025

    This doctor was my saving grace! I wish I had seen him years ago! Top notch service and care! He really wanted to help me I could tell. The best doctor I've had my whole life.

  • Reviewed on 3/31/2025

    He was good at explaining my treatment to me