Mark Nissenbaum, MD

Gastroenterology

20+ years in practiceNPI: 1003894502Licensed in NY

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Credentials & Recognition

Specialties

Gastroenterology

NPI sub-specialties

Internal Medicine, Gastroenterology207RG0100X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

20+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#4

Top Gastroenterologists in Alabama, 2026

Gastroenterology · Alabama · 2026

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Frequently Asked Questions about Dr. Mark Nissenbaum, MD

Where does Dr. Mark Nissenbaum, MD practice?+
Dr. Mark Nissenbaum, MD practices in Alabama, AL. 3701 LOOP RD VA MEDICAL CENTER (679/11) TUSCALOOSA, AL 354045015.
What is Dr. Mark Nissenbaum, MD's phone number?+
Dr. Mark Nissenbaum, MD's practice phone is 205-554-2000. Office contact information is verified on the PBCMMG profile.
What does Dr. Mark Nissenbaum, MD specialize in?+
Dr. Mark Nissenbaum, MD's primary specialty is Gastroenterology.
Is Dr. Mark Nissenbaum, MD board certified?+
Board certification status for Dr. Mark Nissenbaum, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Mark Nissenbaum, MD been practicing?+
Dr. Mark Nissenbaum, MD has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. Mark Nissenbaum, MD's NPI number?+
Dr. Mark Nissenbaum, MD's National Provider Identifier (NPI) is 1003894502, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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