Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1609832021 Individual Practitioner Female Practitioner

Dr. Sharon Marcus-Geller , MD

Internal Medicine • Cambridge, MA

Professional Overview & Biography Verified Profile Summary

Dr. Sharon Marcus-Geller, MD is a registered healthcare professional specializing in Internal Medicine in Cambridge, MA. Practice services are available at 1611 CAMBRIDGE ST under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

1611 Cambridge St
Internal Medicine

Cambridge, MA 021384302

Telephone 6176615100
Associated Practice Facility / Clinic
🏢 Atrius Health, Inc. Facility NPI 1568595346

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Cambridge, MA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 22.6 Yrs
State Avg: 29.3 Yrs
Regional Practice Density
309 Specialists

Practicing in Cambridge, MA (7127 Statewide)

Telehealth Adoption Rate
23.9% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License MA 216981

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
2020718 (MA)

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

13 Associated Practitioners
Aaron Birnbaum

Internal Medicine

NPI 1023645249
Dr. Leann Canty , MD

Internal Medicine

NPI 1205807781

Doctor of Medicine (M.D.)

Dr. Lily Liu , MD

Internal Medicine

NPI 1245435163

Doctor of Medicine (M.D.)

Dr. Zohar Weinstein , MD

Internal Medicine

NPI 1467081307

Doctor of Medicine (M.D.)

NPI 1528021425

Doctor of Medicine (M.D.)

Gabriela Rufo , NP

Nurse Practitioner - Family

NPI 1528827540

Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 1611 CAMBRIDGE ST, INTERNAL MEDICINE, CAMBRIDGE, MA 021384302 (Tel: 6176615100)

📍
Updated Business Mailing Address July 08, 2007

Registered at 147 MILK ST, PROVIDER ENROLLMENT - 9TH FLOOR, BOSTON, MA 021094806 (Tel: 6175598374)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as SHARON MARCUS-GELLER, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (License #216981 in MA)

🟢
Initial NPI Registration & Enumeration April 25, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1609832021
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 25, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

147 Milk St, Provider Enrollment - 9th Floor

Boston, MA 021094806

Phone: 6175598374

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.