Mark Nissenbaum, M.D.
NPI 1003894502 · Gastroenterology Physician · Tuscaloosa, AL
Mark Nissenbaum, M.D. is a Gastroenterology Physician provider in Tuscaloosa, AL (NPI 1003894502).
Provider details
- NPI number
- 1003894502
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 122786 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-04
- Last updated
- 2007-07-09
Frequently asked questions
- What is Mark Nissenbaum's NPI number?
- Mark Nissenbaum's National Provider Identifier (NPI) is 1003894502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Nissenbaum's specialty?
- Mark Nissenbaum is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Nissenbaum located?
- Mark Nissenbaum's practice location on file with NPPES is 3701 Loop Rd, Tuscaloosa, AL 35404-5015.
- What is Mark Nissenbaum's phone number?
- The practice phone number listed in the NPPES registry for Mark Nissenbaum is (205) 554-2000.
- Is Mark Nissenbaum's NPI active?
- Yes — Mark Nissenbaum's NPI (1003894502) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.