Karen Oh, D.O.
NPI 1902006588 · Internal Medicine Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Oh, D.O. is a Internal Medicine Physician provider in Torrance, CA (NPI 1902006588).
Provider details
- NPI number
- 1902006588
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A5905 (CA)
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
18 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 136 | 40 |
| Rosuvastatin Calcium | 135 | 46 |
| Losartan Potassium | 100 | 31 |
| Metformin Hclbrand: Metformin Hcl Er | 95 | 26 |
| Alendronate Sodium | 88 | 23 |
| Levothyroxine Sodium | 76 | 21 |
| Olmesartan Medoxomil |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-20
- Last updated
- 2011-01-18
Frequently asked questions
- What is Karen Oh's NPI number?
- Karen Oh's National Provider Identifier (NPI) is 1902006588, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Oh's specialty?
- Karen Oh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Oh located?
- Karen Oh's practice location on file with NPPES is 23000 Crenshaw Blvd., Torrance, CA 90505.
- What is Karen Oh's phone number?
- The practice phone number listed in the NPPES registry for Karen Oh is (310) 326-1147.
- Does Karen Oh accept Medicare?
- Karen Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Oh's NPI active?
- Yes — Karen Oh's NPI (1902006588) is active in the NPPES registry as of the last update on 2011-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.