Warren Hung, MD
NPI 1770621260 · Internal Medicine Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Hung, MD is a Internal Medicine Physician provider in Irvine, CA (NPI 1770621260).
Provider details
- NPI number
- 1770621260
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A55808 (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
19 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
632 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 271 | $99 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 119 | $19 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 85 | $139 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 68 | $62 |
| Administration of Influenza Virus VaccineG0008 | 66 | $35 |
| Administration of Pneumococcal VaccineG0009 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 609 | 148 |
| Metoprolol Succinate | 604 | 125 |
| Atorvastatin Calcium | 585 | 170 |
| Losartan Potassium | 354 | 83 |
| Alendronate Sodium | 286 | 63 |
| Triamcinolone Acetonide | 161 | 71 |
| Metformin Hcl | 155 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Warren Hung's NPI number?
- Warren Hung's National Provider Identifier (NPI) is 1770621260, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Hung's specialty?
- Warren Hung is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Hung located?
- Warren Hung's practice location on file with NPPES is 14150 Culver Drive, Irvine, CA 92604.
- What is Warren Hung's phone number?
- The practice phone number listed in the NPPES registry for Warren Hung is (949) 559-1496.
- Does Warren Hung accept Medicare?
- Warren Hung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Hung's NPI active?
- Yes — Warren Hung's NPI (1770621260) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.