Billy Chen, M.D., PH.D.
Cardiovascular Disease Physician · Roseville, CA
Billy Chen, M.D., PH.D. is a cardiovascular disease physician with a practice address in Roseville, California, and NPI 1609168475, issued on May 11, 2011. Check the license (California A168212, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Billy Chen
- Credential
- M.D., PH.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- A168212 CA
MD60462419 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1600 Eureka RD Bldg C, Roseville, CA 95661
- Phone
- (916) 784-5657
- Enumerated
- May 11, 2011
- Record last updated
- Sep 9, 2024
- Medicaid ID
- 1609168475 WA
- Medicare enrollment
- Enrolled (PECOS I20221006000825); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 1600 Eureka RD Bldg C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mireille Adelson, C.N.M.Midwife1508293788
- Andrew Huang, MDUrology Physician1932187705
- Vicente Melgarejo CovarrubiasPharmacist1851942106
Verify Billy Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A168212Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,109 Medicare Part D claims for 287 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Metoprolol Succinate188 claims
- Atorvastatin Calcium90 claims
- Jardiance67 claims
- Losartan Potassium64 claims
- Metoprolol Tartrate60 claims
- Flecainide Acetate59 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Billy Chen among 2,574 cardiovascular disease physician records in California
Billy Chen, M.D., PH.D. is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 77% of them.
- NPI issued2011 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2011 · median 1999 among the 1,742 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Roseville → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Victor Bonilla, MD, FACCRoseville, CA 956611144245895
- David Brockman, PARoseville, CA 956611669643052
- Jerold Dooley, MDRoseville, CA 956611629156310
- Daniel Ebenezer, M.D.Roseville, CA 956611508838541
- Marjon Fariba, MDRoseville, CA 956611366520058
- George Fehrenbacher, M.D.Roseville, CA 956611265404289
- Thomas Fitzpatrick, MDRoseville, CA 956611215075213
- Peter Jurisich, D.O.Roseville, CA 956611629083407
Common questions
What is Billy Chen, M.D., PH.D.'s NPI number?
Billy Chen, M.D., PH.D.'s National Provider Identifier (NPI) is 1609168475, issued on May 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Billy Chen, M.D., PH.D. located?
The NPPES record lists a practice address at 1600 Eureka RD Bldg C, Roseville, CA, 95661. Phone: (916) 784-5657. Providers update this record themselves, so call before visiting.
How can I verify Billy Chen, M.D., PH.D.'s license?
NPPES lists California license number A168212, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Billy Chen, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Billy Chen, M.D., PH.D. had 1,109 Medicare Part D claims for 287 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.