Siraphob Chansangavej, MD
Hospitalist Physician · San Rafael, CA
Siraphob Chansangavej, MD is a hospitalist physician with a practice address in San Rafael, California, and NPI 1386268027, issued on May 28, 2020. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Siraphob Chansangavej
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 337657 LA
Self-reported in NPPES; status is on the state search - Practice location
- 99 Montecillo RD, San Rafael, CA 94903
- Phone
- (415) 791-1329
- Enumerated
- May 28, 2020
- Record last updated
- Aug 13, 2024
- Medicare enrollment
- Enrolled (PECOS I20240824000303); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 99 Montecillo RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siraphob Chansangavej in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average hospitalist physician in 2024
230 Medicare Part D claims for 75 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium23 claims
- Furosemide20 claims
- Pantoprazole Sodium15 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 IncSan Rafael, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siraphob Chansangavej among 3,099 hospitalist physician records in California
Siraphob Chansangavej, MD 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 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2020 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 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).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Rafael → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Gregory Arent, MDSan Rafael, CA 949031245314210
- Ingrid Brennan, MDSan Rafael, CA 949031518046655
- Anne-Maree Cantwell, MDSan Rafael, CA 949031679657670
- Viet Lam, MDSan Rafael, CA 949031942384011
- Jeffrey Lovold, MDSan Rafael, CA 949031376627356
- Robert Lowell, MDSan Rafael, CA 949031053495051
- Stephen Mizroch, MDSan Rafael, CA 949031225112394
- Peter Reidy, MDSan Rafael, CA 949031013113257
Common questions
What is Siraphob Chansangavej, MD's NPI number?
Siraphob Chansangavej, MD's National Provider Identifier (NPI) is 1386268027, issued on May 28, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Siraphob Chansangavej, MD located?
The NPPES record lists a practice address at 99 Montecillo RD, San Rafael, CA, 94903. Phone: (415) 791-1329. Providers update this record themselves, so call before visiting.
How can I verify Siraphob Chansangavej, MD's license?
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 Siraphob Chansangavej, MD prescribe under Medicare Part D?
In 2024, Siraphob Chansangavej, MD had 230 Medicare Part D claims for 75 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.