Charlie Huang, D.O.
NPI 1427591577 · Internal Medicine Physician · Tustin, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charlie Huang, D.O. is a Internal Medicine Physician provider in Tustin, CA (NPI 1427591577).
Provider details
- NPI number
- 1427591577
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A14941 (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
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
929 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 422 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 125 | $99 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 68 | $140 |
| Administration of Influenza Virus VaccineG0008 | 46 | $34 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 43 | $16 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 40 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 104 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 432 | 150 |
| Amlodipine Besylate | 292 | 98 |
| Rosuvastatin Calcium | 275 | 96 |
| Losartan Potassium | 244 | 86 |
| Levothyroxine Sodium | 203 | 68 |
| Tamsulosin Hcl | 140 | 58 |
| Lisinopril |
Practice location
Mailing address
Additional practice locations (1)
- 47 LatitudeIrvine, CA 92618-8821Phone: (562) 305-4772
Registry dates
- Enumerated
- 2016-11-21
- Last updated
- 2018-09-13
Frequently asked questions
- What is Charlie Huang's NPI number?
- Charlie Huang's National Provider Identifier (NPI) is 1427591577, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charlie Huang's specialty?
- Charlie Huang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charlie Huang located?
- Charlie Huang's practice location on file with NPPES is 15000 Kensington Park Dr Ste 250, Tustin, CA 92782.
- What is Charlie Huang's phone number?
- The practice phone number listed in the NPPES registry for Charlie Huang is (714) 477-8320.
- Does Charlie Huang accept Medicare?
- Charlie Huang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charlie Huang's NPI active?
- Yes — Charlie Huang's NPI (1427591577) is active in the NPPES registry as of the last update on 2018-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.