Julie Oh, MD
NPI 1093389223 · Internal Medicine Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Julie Oh, MD is a Internal Medicine Physician provider in Fountain Valley, CA (NPI 1093389223).
Provider details
- NPI number
- 1093389223
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A182579 (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
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
14 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $179 |
Typical Medicare-allowed amounts for these services range $179–$179 (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
Additional practice locations (2)
- 1050 Linden AveLong Beach, CA 90813-3321Phone: (562) 491-9049
- 101 the City Dr S Ste 400Orange, CA 92868-3201Phone: (714) 456-5691
Registry dates
- Enumerated
- 2021-05-12
- Last updated
- 2024-08-20
- Certified
- 2024-08-20
Frequently asked questions
- What is Julie Oh's NPI number?
- Julie Oh's National Provider Identifier (NPI) is 1093389223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Julie Oh's specialty?
- Julie Oh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Julie Oh located?
- Julie Oh's practice location on file with NPPES is 18111 Brookhurst St, Fountain Valley, CA 92708-6728.
- What is Julie Oh's phone number?
- The practice phone number listed in the NPPES registry for Julie Oh is (714) 717-4415.
- Does Julie Oh accept Medicare?
- Julie Oh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Julie Oh's NPI active?
- Yes — Julie Oh's NPI (1093389223) is active in the NPPES registry as of the last update on 2024-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.