William Hung
NPI 1972615771 · Internal Medicine Physician · El Monte, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hung is a Internal Medicine Physician provider in El Monte, CA (NPI 1972615771).
Provider details
- NPI number
- 1972615771
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A79596 (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
615 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 | 179 | $99 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 174 | $9 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 32 | $8 |
| Liver Enzyme (sgpt), Level84460 | 32 | $5 |
| Hemoglobin A1c Level83036 | 28 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 23 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 148 | 59 |
| Metformin Hcl | 129 | 54 |
| Gabapentin | 122 | 45 |
| Amlodipine Besylate | 99 | 32 |
| Losartan Potassium | 88 | 25 |
| Glipizide | 70 | 25 |
| Benazepril Hcl | 68 | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is William Hung's NPI number?
- William Hung's National Provider Identifier (NPI) is 1972615771, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hung's specialty?
- William Hung is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Hung located?
- William Hung's practice location on file with NPPES is 10953 Ramona Blvd, El Monte, CA 91731-2629.
- What is William Hung's phone number?
- The practice phone number listed in the NPPES registry for William Hung is (626) 579-8463.
- Does William Hung accept Medicare?
- William Hung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hung's NPI active?
- Yes — William Hung's NPI (1972615771) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.