Billy Chen, M.D., PH.D.
NPI 1609168475 · Cardiovascular Disease Physician · Roseville, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Billy Chen, M.D., PH.D. is a Cardiovascular Disease Physician provider in Roseville, CA (NPI 1609168475).
Provider details
- NPI number
- 1609168475
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD60462419 (WA)
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 tenure28% of score
15 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
107 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 107 | $8 |
Typical Medicare-allowed amounts for these services range $8–$8 (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 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 188 | 73 |
| Atorvastatin Calcium | 90 | 32 |
| Empagliflozinbrand: Jardiance | 67 | 27 |
| Losartan Potassium | 64 | 25 |
| Metoprolol Tartrate | 60 | 31 |
| Flecainide Acetate | 59 | 22 |
| Amiodarone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-11
- Last updated
- 2024-09-09
- Certified
- 2024-09-09
Frequently asked questions
- What is Billy Chen's NPI number?
- Billy Chen's National Provider Identifier (NPI) is 1609168475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Billy Chen's specialty?
- Billy Chen is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Billy Chen located?
- Billy Chen's practice location on file with NPPES is 1600 Eureka Rd Bldg C, Roseville, CA 95661-3027.
- What is Billy Chen's phone number?
- The practice phone number listed in the NPPES registry for Billy Chen is (916) 784-5657.
- Does Billy Chen accept Medicare?
- Billy Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Billy Chen's NPI active?
- Yes — Billy Chen's NPI (1609168475) is active in the NPPES registry as of the last update on 2024-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.