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Timothy Oh
NPI 1225395502 · Internal Medicine Physician · Pasadena, CA
Timothy Oh is a Internal Medicine Physician provider in Pasadena, CA (NPI 1225395502).
Provider details
- NPI number
- 1225395502
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A126718 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(80/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
100 W California Blvd
Box 7013
Pasadena, CA 91105-3010
Phone: (626) 397-5188
Street-level locationGet directions
Mailing address
10820 183rd St
Cerritos, CA 90703-8013
Registry dates
- Enumerated
- 2012-04-11
- Last updated
- 2015-11-13
Frequently asked questions
- What is Timothy Oh's NPI number?
- Timothy Oh's National Provider Identifier (NPI) is 1225395502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Oh's specialty?
- Timothy Oh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Oh located?
- Timothy Oh's practice location on file with NPPES is 100 W California Blvd, Pasadena, CA 91105-3010.
- What is Timothy Oh's phone number?
- The practice phone number listed in the NPPES registry for Timothy Oh is (626) 397-5188.
- Is Timothy Oh's NPI active?
- Yes — Timothy Oh's NPI (1225395502) is active in the NPPES registry as of the last update on 2015-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.