Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark J. Marshall, DO

Individual provider Internal Medicine Physician · NPI 1326197963

Dr. Mark J. Marshall, DO is an Internal Medicine in Sharon, Connecticut. Qualified in 2009, 17 years ago. Practices with Nuvance Health Medical Practice PC, a 575-clinician group and accepts Medicare assignment. Licensed in Connecticut and New York.

Years since qualifying
17
Licensed in
CT, NY
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

50 Hospital Hill Rd Sharon Hospital
Sharon, CT 06069-2096
Phone: (860) 364-4201
Fax: (860) 364-4211
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 000529 (CT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 203678 (NY)

Record details

NPI number1326197963
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJanuary 10, 2007
Last updated in NPPESJuly 8, 2007
Mailing address50 Hospital Hill Rd, Sharon Hospital, Sharon, CT 06069-2096

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Nuvance Health Medical Practice Pc — 575 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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