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Daniel Tseytlin, DO


St. Joseph Hospital Rheumatology

168 Kinsley Street,
Suite 10,
Nashua, NH, 03060

Phone: 603-578-9363
Fax: 603-578-9539

Monday – Friday 8 a.m. to 5 p.m.

Daniel Tseytlin, DO



Medical School: Lake Erie College of Osteopathic Medicine, Erie, PA

Residency: Lehigh Valley Health Network, Allentown, PA

Fellowship: Lehigh Valley Health Network, Allentown, PA


Internal Medicine – Certified

Personal Bio

In his spare time, Dr. Tseytlin enjoys playing sports, cooking, and painting. Outside of those activities, he loves spending time with his wife, daughter, and cat, Lucy!


Additional Information

“I am a happy new patient. Dr. Tseytlin has great bedside manner. He’s very informative and makes me feel comfortable at every appointment.” – Christine S.

“The disease of RA is painful, depressing, and complicated to understand. Dr. T. helps me understand my treatment process by taking his time to explain no matter how many questions I have. His professional bedside manner is comforting. He’s always on point with my treatment plan. I know I’m in great hands. Thanks Dr. T. for encouraging me to keep pushing forward and helping me to have a better quality of life.” – Tina

“I really like Dr. Tseytlin, and I can be very critical of the care some physicians provide. He listens, he has a nice manner, and he gets to the point. The ladies at the front desk are all very personable and professional. Given my experience, I would highly recommend this rheumatology office.” – Elizabeth

“This is your sign to schedule your appointment now! No need to look elsewhere! Most informative appointment I’ve had in a long time. Such a breath of fresh air. He will help you get to the root cause and not just prescribe a band-aid.” – Lisa

“My experiences with Dr. Tseytlin have been extremely helpful. He listens, he’s thorough, and he’s compassionate. He has helped me greatly. The staff in his office are wonderful also. I am very happy that I found them all. Dr. Tseytlin, thank you!” – Donna

“Thorough and helpful visit. Thank you, Dr. Tseytlin.” – Judy

“He has always been friendly, remembers life details from other appointments. I always leave confident in my treatment and care I receive from him and his office.” – Kevin

“He fixed my problem when other doctors could not. Very patient and a good listener.” – Lee

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