HealthCareAtlasUSA

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Doctors / MA

MARK C NITZBERG, MD

GASTROENTEROLOGY

Medical school: UNIVERSITY OF MASSACHUSETTS MEDICAL SCHOOL

Graduated: 1989

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1881652758

Practice Locations (4)

380 R MERRIMACK ST, SUITE 2C

METHUEN, MA 018445884

411 MERRIMACK ST, SUITE 202

METHUEN, MA 018445821

9786811977

70 E ST

METHUEN, MA 018444597

9786870151

16 KEEWAYDIN DR

SALEM, NH 030792839

6034016466

Source: CMS National Downloadable File, September 2026.

MARK NITZBERG, MD | HealthCareAtlasUSA