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

Dr. Eric J Nielsen, MD

Individual provider Internal Medicine Physician · NPI 1952750556

Dr. Eric J Nielsen, MD is an Internal Medicine in Shrewsbury, Massachusetts. Graduated from University of Rochester School of Medicine and Dentistry in 2016, 10 years ago. Practices with Reliant Medical Group Inc, a 638-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and Virginia.

Years since qualifying
10
Trained at
University of Rochester School of Medicine and Dentistry
Licensed in
MA, VA
In the registry since
2016
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

378 Maple Ave
Shrewsbury, MA 01545-2675
Phone: (508) 368-7820
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 1017771 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101263082 (VA)

Record details

NPI number1952750556
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 6, 2016
Last updated in NPPESSeptember 6, 2024
Certification dateSeptember 6, 2024
Mailing address378 Maple Ave, Shrewsbury, MA 01545-2675

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 2016 (10 years in practice)
Group practice Reliant Medical Group Inc — 638 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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