James Yoss, M.D.
Internal Medicine Physician · San Francisco, CA
James Yoss, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1932107109, issued on Jul 12, 2005. Check the license (California G61346, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Yoss
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G61346 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Shrader St, San Francisco, CA 94117
- Phone
- (415) 752-0100
- Enumerated
- Jul 12, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (415) 752-7103
- Medicaid ID
- 00G613460 CA
- Medicare enrollment
- Enrolled (PECOS I20081220000139); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1 Shrader St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Allison, M.D.Internal Medicine Physician1376541060
- Sergio Bello, MDCardiovascular Disease Physician1407868367
- Carl Bricca, D.O.Internal Medicine Physician1114925385
- Jeaniesar Caluag, M.D.Internal Medicine Physician1720246705
- Jose Eguia, MDInfectious Disease Physician1972565307
- Robert Ellis, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1710036777
Verify James Yoss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G61346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
About as many Medicare Part D claims as the average internal medicine physician in 2024
3,190 Medicare Part D claims for 296 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Atorvastatin Calcium281 claims
- Losartan Potassium174 claims
- Amlodipine Besylate167 claims
- Hydrochlorothiazide129 claims
- Metoprolol Succinate129 claims
- Levothyroxine Sodium106 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.
Industry payments in 2024: $1,248.17
58 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mercy Doctors Medical Group, IncSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Yoss among 17,696 internal medicine physician records in California
James Yoss, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1986 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Pedro Aceves-Casillas, M.D.San Francisco, CA 941171144252396
- Charles Allison, M.D.San Francisco, CA 941171376541060
- Carl Bricca, D.O.San Francisco, CA 941171114925385
- Robert BrodySan Francisco, CA 941171801815600
- Kwok Chan, M.D.San Francisco, CA 941171063413714
- Diana Hilbert, M.D.San Francisco, CA 941171386642551
- William Kell, M.DSan Francisco, CA 941171528094547
- Kenneth Maybury, M.D.San Francisco, CA 941171295733459
Common questions
What is James Yoss, M.D.'s NPI number?
James Yoss, M.D.'s National Provider Identifier (NPI) is 1932107109, issued on Jul 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Yoss, M.D. located?
The NPPES record lists a practice address at 1 Shrader St, San Francisco, CA, 94117. Phone: (415) 752-0100. Providers update this record themselves, so call before visiting.
How can I verify James Yoss, M.D.'s license?
NPPES lists California license number G61346, 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 Yoss, M.D. prescribe under Medicare Part D?
In 2024, James Yoss, M.D. had 3,190 Medicare Part D claims for 296 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.