Jonathan R. Chan, MD
Family Medicine Physician · Whittier, CA
Jonathan R. Chan, MD is a family medicine physician with a practice address in Whittier, California, and NPI 1043831985, issued on May 1, 2020. Check the license (California A185515, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan R. Chan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A185515 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12470 Whittier Blvd, Whittier, CA 90602
- Phone
- (833) 574-2273
- Enumerated
- May 1, 2020
- Record last updated
- Sep 8, 2024
- Medicare enrollment
- Enrolled (PECOS I20231010000690); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 12470 Whittier Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jonathan R. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A185515Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average family medicine physician in 2024
3,881 Medicare Part D claims for 1,874 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 53 claims were for opioids.
Most prescribed
- Atorvastatin Calcium363 claims
- Amlodipine Besylate215 claims
- Lisinopril201 claims
- Losartan Potassium159 claims
- Rosuvastatin Calcium154 claims
- Metformin Hcl148 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
- Southern California Permanente Medical GroupWhittier, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan R. Chan among 17,133 family medicine physician records in California
Jonathan R. Chan, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
87 family medicine physician records list a practice address in Whittier
They are 87 of the 2,836 NPPES records with a practice address in Whittier, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Whittier → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Chung-Lien Chen, M.D.Whittier, CA 906021558465930
- Lowryn De Castro, FNPWhittier, CA 906021497098768
- Fernando Gonzales, M.D.Whittier, CA 906021346343225
- Annette Guerrero, M.D.Whittier, CA 906021265476162
- Timothy Howell, M.D.Whittier, CA 906021568750073
- Adeliza Jimenez, M.D.Whittier, CA 906021700029949
- Joseph Kang, MDWhittier, CA 906021982636288
- Rachel Kaplan, D.O.Whittier, CA 906021699017061
Common questions
What is Jonathan R. Chan, MD's NPI number?
Jonathan R. Chan, MD's National Provider Identifier (NPI) is 1043831985, issued on May 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan R. Chan, MD located?
The NPPES record lists a practice address at 12470 Whittier Blvd, Whittier, CA, 90602. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Jonathan R. Chan, MD's license?
NPPES lists California license number A185515, 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 Jonathan R. Chan, MD prescribe under Medicare Part D?
In 2024, Jonathan R. Chan, MD had 3,881 Medicare Part D claims for 1,874 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.