Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Dr. Eric J Alper, MD

Individual provider Internal Medicine Physician · NPI 1275524340

Dr. Eric J Alper, MD practises Internal Medicine in Worcester, Massachusetts. Graduated from University of Massachusetts Medical School in 1993, 33 years ago. Practices with Umass Memorial Medical Group Inc, a 2,467-clinician group and accepts Medicare assignment. Licensed in Massachusetts and Rhode Island.

Years since qualifying
33
Trained at
University of Massachusetts Medical School
Licensed in
MA, RI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

55 Lake Ave N
Worcester, MA 01655-0002
Phone: (774) 441-6767
Fax: (774) 441-6787
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 81812 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD14074 (RI)

Record details

NPI number1275524340
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 28, 2005
Last updated in NPPESOctober 13, 2020
Certification dateOctober 13, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice Umass Memorial Medical Group Inc — 2467 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients44
Services billed 105 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Umass Memorial Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2467 clinicians in the practice; 12 are shown here.

Other providers in Worcester