James Huang, D.O.
NPI 1518992635 · Family Medicine Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Huang, D.O. is a Family Medicine Physician provider in Fullerton, CA (NPI 1518992635).
Provider details
- NPI number
- 1518992635
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A7771 (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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
320 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 320 | $101 |
Typical Medicare-allowed amounts for these services range $101–$101 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 143 | 63 |
| Tirzepatidebrand: Mounjaro | 143 | 24 |
| Semaglutidebrand: Ozempic | 130 | 33 |
| Amlodipine Besylate | 100 | 34 |
| Pantoprazole Sodium | 97 | 47 |
| Rosuvastatin Calcium | 89 | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$407 across 6 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
Additional practice locations (1)
- 400 W Central AveSte 109Brea, CA 92821-3007Phone: (714) 990-0375Fax: (714) 990-0305
Registry dates
- Enumerated
- 2006-07-11
- Last updated
- 2018-03-17
Frequently asked questions
- What is James Huang's NPI number?
- James Huang's National Provider Identifier (NPI) is 1518992635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Huang's specialty?
- James Huang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Huang located?
- James Huang's practice location on file with NPPES is 2501 E Chapman Ave Ste 100, Fullerton, CA 92831-3135.
- What is James Huang's phone number?
- The practice phone number listed in the NPPES registry for James Huang is (714) 990-0375.
- Does James Huang accept Medicare?
- James Huang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Huang's NPI active?
- Yes — James Huang's NPI (1518992635) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.