OrganizationActive
Gastroenterology Medical Group, Inc.
NPI 1811040967 · Gastroenterology Physician · Concord, CA
Provider details
- NPI number
- 1811040967
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Richard Messian, Ceo(925) 687-9650
- License
- G268490 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
2415 High School Ave
Suite 100
Concord, CA 94520-1800
Phone: (925) 687-9650
Fax: (925) 685-8447
Street-level locationGet directions
Mailing address
2415 High School Ave
Concord, CA 94520-1800
Registry dates
- Enumerated
- 2007-01-20
- Last updated
- 2008-02-27
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.