James R. Adams, M.D.
Cardiovascular Disease Physician · Larkspur, CA
James R. Adams, M.D. is a cardiovascular disease physician with a practice address in Larkspur, California, and NPI 1578553277, issued on Oct 24, 2005. Check the license (California G28429, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James R. Adams
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- G28429 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Bon Air RD, Larkspur, CA 94939
- Phone
- (415) 927-6158
- Enumerated
- Oct 24, 2005
- Record last updated
- Apr 9, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (415) 927-6168
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 2 Bon Air RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen AbuPhysician Assistant1851415053
- Margaret Baer, M.D.Cardiovascular Disease Physician1104816917
- Adam Baumgarten, MDCardiovascular Disease Physician1366570707
- Nancy Bloom, R.D.Registered Dietitian1033325907
- William Bradley, ACNP-BCAcute Care Nurse Practitioner1992869176
- Cheri Brendel, RNRegistered Nurse1205977469
Verify James R. Adams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G28429Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
13 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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: $104.20
1 payment: food and beverage; the largest payer was Theratechnologies Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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.
James R. Adams among 2,574 cardiovascular disease physician records in California
James R. Adams, M.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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2012 · 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).
21 cardiovascular disease physician records list a practice address in Larkspur
They are 21 of the 291 NPPES records with a practice address in Larkspur, and 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Larkspur → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Margaret Baer, M.D.Larkspur, CA 949391104816917
- Adam Baumgarten, MDLarkspur, CA 949391366570707
- Kent Gershengorn, M.D.Larkspur, CA 949391811987621
- Ann Kao, M.D.Larkspur, CA 949391336130145
- Brian Keeffe, M.D.Larkspur, CA 949391689664492
- Sahar Naderi, M.D.Larkspur, CA 949391013183334
- Kabir Singh, M.D.Larkspur, CA 949391629233051
- Joel Sklar, M.D.Larkspur, CA 949391215927926
Common questions
What is James R. Adams, M.D.'s NPI number?
James R. Adams, M.D.'s National Provider Identifier (NPI) is 1578553277, issued on Oct 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James R. Adams, M.D. located?
The NPPES record lists a practice address at 2 Bon Air RD, Larkspur, CA, 94939. Phone: (415) 927-6158. Providers update this record themselves, so call before visiting.
How can I verify James R. Adams, M.D.'s license?
NPPES lists California license number G28429, 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 R. Adams, M.D. prescribe under Medicare Part D?
In 2024, James R. Adams, M.D. had 13 Medicare Part D claims; 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.