Sang Hoon Ahn Medical Group, Inc.
NPI 1720931736 · Internal Medicine Physician · Fullerton, CA
Sang Hoon Ahn Medical Group, Inc. is a Internal Medicine Physician organization in Fullerton, CA (NPI 1720931736).
Provider details
- NPI number
- 1720931736
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sang Hoon Ahn, Ceo(213) 245-0788
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
Under 1 yr in 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
Other names (DBA / former)
- Doing business as
- Ahn Medical
Registry dates
- Enumerated
- 2026-02-18
- Last updated
- 2026-03-12
- Certified
- 2026-03-12
Frequently asked questions
- What is Sang Hoon Ahn Medical Group, Inc.'s NPI number?
- Sang Hoon Ahn Medical Group, Inc.'s National Provider Identifier (NPI) is 1720931736, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sang Hoon Ahn Medical Group, Inc.?
- Sang Hoon Ahn Medical Group, Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sang Hoon Ahn Medical Group, Inc. located?
- Sang Hoon Ahn Medical Group, Inc.'s practice location on file with NPPES is 1950 Sunny Crest Dr Ste 2800, Fullerton, CA 92835-3641.
- What is Sang Hoon Ahn Medical Group, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Sang Hoon Ahn Medical Group, Inc. is (657) 888-9919.
- Who is the authorized official for Sang Hoon Ahn Medical Group, Inc.?
- The authorized official listed on Sang Hoon Ahn Medical Group, Inc.'s NPPES record is Sang Hoon Ahn, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sang Hoon Ahn Medical Group, Inc.'s NPI active?
- Yes — Sang Hoon Ahn Medical Group, Inc.'s NPI (1720931736) is active in the NPPES registry as of the last update on 2026-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.