Stephen Oh, D.O.
NPI 1881867695 · Anatomic Pathology & Clinical Pathology Physician · Murrieta, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Oh, D.O. is a Anatomic Pathology & Clinical Pathology Physician provider in Murrieta, CA (NPI 1881867695).
Provider details
- NPI number
- 1881867695
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A 9711 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
21,137 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 16,474 | $79 |
| Genetic Sequencing Localization, Each Additional Procedure88364 | 2,071 | $35 |
| Genetic Sequencing Localization, Initial Procedure88365 | 715 | $44 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report88312 | 308 | $106 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 285 | $9 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 220 | $36 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$321 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-12
- Last updated
- 2016-11-28
Frequently asked questions
- What is Stephen Oh's NPI number?
- Stephen Oh's National Provider Identifier (NPI) is 1881867695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Oh's specialty?
- Stephen Oh is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Oh located?
- Stephen Oh's practice location on file with NPPES is 29185 Branwin St, Murrieta, CA 92563-5877.
- What is Stephen Oh's phone number?
- The practice phone number listed in the NPPES registry for Stephen Oh is (312) 636-9389.
- Does Stephen Oh accept Medicare?
- Stephen Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Oh's NPI active?
- Yes — Stephen Oh's NPI (1881867695) is active in the NPPES registry as of the last update on 2016-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.