Sammy Hung, MD
NPI 1639192404 · Pulmonary Disease Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sammy Hung, MD is a Pulmonary Disease Physician provider in Hayward, CA (NPI 1639192404).
Provider details
- NPI number
- 1639192404
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G34867 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
804 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 | 452 | $116 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 77 | $19 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 70 | $12 |
| Test to Determine Lung Volumes Using Sensors94726 | 69 | $14 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 69 | $10 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 52 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 192 | 70 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 143 | 39 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 82 | 31 |
| Prednisone | 74 | 20 |
| Montelukast Sodium | 69 | 26 |
| Albuterol Sulfatebrand: Ventolin Hfa | 66 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$112 across 5 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
Registry dates
- Enumerated
- 2006-07-25
- Last updated
- 2015-10-05
Frequently asked questions
- What is Sammy Hung's NPI number?
- Sammy Hung's National Provider Identifier (NPI) is 1639192404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sammy Hung's specialty?
- Sammy Hung is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Sammy Hung located?
- Sammy Hung's practice location on file with NPPES is 27001 Calaroga Ave, Hayward, CA 94545-4345.
- What is Sammy Hung's phone number?
- The practice phone number listed in the NPPES registry for Sammy Hung is (510) 887-4033.
- Does Sammy Hung accept Medicare?
- Sammy Hung is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sammy Hung's NPI active?
- Yes — Sammy Hung's NPI (1639192404) is active in the NPPES registry as of the last update on 2015-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.