Internal Medical Group
NPI 1164499737 · Gastroenterology Physician · Yorba Linda, CA
Internal Medical Group is a Gastroenterology Physician organization in Yorba Linda, CA (NPI 1164499737).
Provider details
- NPI number
- 1164499737
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Chapman, Gastroenterologist(714) 996-3700
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
- 2006-03-02
- Last updated
- 2014-03-31
Frequently asked questions
- What is Internal Medical Group's NPI number?
- Internal Medical Group's National Provider Identifier (NPI) is 1164499737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Internal Medical Group?
- Internal Medical Group is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Internal Medical Group located?
- Internal Medical Group's practice location on file with NPPES is 16671 Yorba Linda Blvd Ste 200, Yorba Linda, CA 92886-2046.
- What is Internal Medical Group's phone number?
- The practice phone number listed in the NPPES registry for Internal Medical Group is (714) 996-3700.
- Who is the authorized official for Internal Medical Group?
- The authorized official listed on Internal Medical Group's NPPES record is David Chapman, Gastroenterologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Internal Medical Group's NPI active?
- Yes — Internal Medical Group's NPI (1164499737) is active in the NPPES registry as of the last update on 2014-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.