Theodore Ahn
NPI 1851687701 · Clinical Social Worker · South Pasadena, CA
Theodore Ahn is a Clinical Social Worker provider in South Pasadena, CA (NPI 1851687701).
Provider details
- NPI number
- 1851687701
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2130 E 4th StSanta Ana, CA 92705-3818Phone: (714) 543-5437
Registry dates
- Enumerated
- 2011-06-20
- Last updated
- 2024-06-17
- Certified
- 2024-06-17
Frequently asked questions
- What is Theodore Ahn's NPI number?
- Theodore Ahn's National Provider Identifier (NPI) is 1851687701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Ahn's specialty?
- Theodore Ahn is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Theodore Ahn located?
- Theodore Ahn's practice location on file with NPPES is 205 Pasadena Ave, South Pasadena, CA 91030-2919.
- What is Theodore Ahn's phone number?
- The practice phone number listed in the NPPES registry for Theodore Ahn is (323) 344-5538.
- Is Theodore Ahn's NPI active?
- Yes — Theodore Ahn's NPI (1851687701) is active in the NPPES registry as of the last update on 2024-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.