Bonnie S. Kimmel, M.D.
Endocrinology, Diabetes & Metabolism Physician · Walnut Creek, CA
Bonnie S. Kimmel, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Walnut Creek, California, and NPI 1508830944, issued on Feb 14, 2006. Check the license (California A98500, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bonnie S. Kimmel
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A98500 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1450 Treat Blvd, Walnut Creek, CA 94597
- Phone
- (925) 296-9740
- Enumerated
- Feb 14, 2006
- Record last updated
- May 27, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (925) 296-9062
- Medicaid ID
- 001431668 CT
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 1450 Treat Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Bonnie S. Kimmel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
23 Medicare Part D claims, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 78% 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: $2,073.76
14 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Bonnie S. Kimmel among 1,131 endocrinology, diabetes & metabolism physician records in California
Bonnie S. Kimmel, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2014 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Walnut Creek → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Fiona Yuen, M.D.Walnut Creek, CA 945971649513599
- Audrey Arzamendi, M.D.Walnut Creek, CA 945981508159567
- Mark Christiansen, MDWalnut Creek, CA 945981821108218
- John Citron, MDWalnut Creek, CA 945961760560890
- Ali Hamraz, MDWalnut Creek, CA 945981083901961
- Richard Kamrath, M.D.Walnut Creek, CA 945981740226919
- Pamela Kershner, MDWalnut Creek, CA 945961841378924
- Mark Klebanov, M.D.Walnut Creek, CA 945981861572703
Common questions
What is Bonnie S. Kimmel, M.D.'s NPI number?
Bonnie S. Kimmel, M.D.'s National Provider Identifier (NPI) is 1508830944, issued on Feb 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bonnie S. Kimmel, M.D. located?
The NPPES record lists a practice address at 1450 Treat Blvd, Walnut Creek, CA, 94597. Phone: (925) 296-9740. Providers update this record themselves, so call before visiting.
How can I verify Bonnie S. Kimmel, M.D.'s license?
NPPES lists California license number A98500, 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 Bonnie S. Kimmel, M.D. prescribe under Medicare Part D?
In 2024, Bonnie S. Kimmel, M.D. had 23 Medicare Part D claims; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.