James Francis Chan, M.D.
Hospitalist Physician · Antioch, CA
James Francis Chan, M.D. is a hospitalist physician with a practice address in Antioch, California, and NPI 1033437231, issued on May 12, 2010. Check the license (California A126160, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Francis Chan
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A126160 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 Sand Creek RD, Antioch, CA 94531
- Phone
- (925) 813-6500
- Enumerated
- May 12, 2010
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (925) 813-7411
- Medicare enrollment
- Enrolled (PECOS I20140130000473); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4501 Sand Creek RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Triveni Abburi, M.D.Internal Medicine Physician1710267497
- Janel AfanadorPharmacist1356655880
- Rosilda AlvesClinical Psychologist1174670327
- Arnoldo Amador, RCPGeneral Care Registered Respiratory Therapist1487118436
- Veronica Arellano, RDRegistered Dietitian1740091354
- Lloyd Asuncion, MDInternal Medicine Physician1437353034
Verify James Francis Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A126160Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average hospitalist physician in 2024
1,230 Medicare Part D claims for 237 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 31 claims were for opioids.
Most prescribed
- Pantoprazole Sodium75 claims
- Atorvastatin Calcium49 claims
- Amlodipine Besylate45 claims
- Furosemide39 claims
- Metoprolol Tartrate39 claims
- Tamsulosin Hcl36 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 IncAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Francis Chan among 3,099 hospitalist physician records in California
James Francis Chan, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 44% of them.
- NPI issued2010 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2008 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 hospitalist physician records list a practice address in Antioch
They are 25 of the 2,184 NPPES records with a practice address in Antioch, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Antioch → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jingping Hao, M.D.Antioch, CA 945311710236898
- Ni Mo, D.O.Antioch, CA 945311285175539
- Abinaya Srikanthan, M.D.Antioch, CA 945311316684921
- Sirisha Sundara, MDAntioch, CA 945311891943445
- Aida Tiron, MDAntioch, CA 945311962818591
- Allan Au, M.D.Fairfield, CA 945331427495563
- Benjamin Liu, D.O.Fairfield, CA 945331932544061
- Andrea Ngo, MDFairfield, CA 945331699863464
Common questions
What is James Francis Chan, M.D.'s NPI number?
James Francis Chan, M.D.'s National Provider Identifier (NPI) is 1033437231, issued on May 12, 2010. An NPI identifies a provider in billing; it is not a license.
Where is James Francis Chan, M.D. located?
The NPPES record lists a practice address at 4501 Sand Creek RD, Antioch, CA, 94531. Phone: (925) 813-6500. Providers update this record themselves, so call before visiting.
How can I verify James Francis Chan, M.D.'s license?
NPPES lists California license number A126160, 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 James Francis Chan, M.D. prescribe under Medicare Part D?
In 2024, James Francis Chan, M.D. had 1,230 Medicare Part D claims for 237 beneficiaries; the average among hospitalist physician prescribers was 521. 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.