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Mark Gromisch, M.D.
NPI 1619092855 · Gastroenterology Physician · New York, NY
Mark Gromisch, M.D. is a Gastroenterology Physician provider in New York, NY (NPI 1619092855).
Provider details
- NPI number
- 1619092855
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 170354 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
166 E 88th St
Suite 1
New York, NY 10128-2255
Phone: (212) 410-3350
Street-level locationGet directions
Mailing address
1005 Smith Ridge Rd
New Canaan, CT 06840-2331
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Gromisch's NPI number?
- Mark Gromisch's National Provider Identifier (NPI) is 1619092855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gromisch's specialty?
- Mark Gromisch is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Gromisch located?
- Mark Gromisch's practice location on file with NPPES is 166 E 88th St, New York, NY 10128-2255.
- What is Mark Gromisch's phone number?
- The practice phone number listed in the NPPES registry for Mark Gromisch is (212) 410-3350.
- Is Mark Gromisch's NPI active?
- Yes — Mark Gromisch's NPI (1619092855) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.