Bryan Oh, M.D.
NPI 1639355472 · Neurological Surgery Physician · Newport Beach, CA
Enrolled with Medicare as Practitioner - Neurosurgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bryan Oh, M.D. is a Neurological Surgery Physician provider in Newport Beach, CA (NPI 1639355472).
Provider details
- NPI number
- 1639355472
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A80845 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
85 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 36 | $79 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 31 | $131 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $183 |
Typical Medicare-allowed amounts for these services range $79–$183 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-01-10
- Last updated
- 2014-06-13
Frequently asked questions
- What is Bryan Oh's NPI number?
- Bryan Oh's National Provider Identifier (NPI) is 1639355472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bryan Oh's specialty?
- Bryan Oh is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Bryan Oh located?
- Bryan Oh's practice location on file with NPPES is 4631 Teller Ave Ste 100, Newport Beach, CA 92660-8105.
- What is Bryan Oh's phone number?
- The practice phone number listed in the NPPES registry for Bryan Oh is (949) 335-7500.
- Does Bryan Oh accept Medicare?
- Bryan Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bryan Oh's NPI active?
- Yes — Bryan Oh's NPI (1639355472) is active in the NPPES registry as of the last update on 2014-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.