J Kirk Zimmer, MD
Family Medicine Physician · Los Gatos, CA
J Kirk Zimmer, MD is a family medicine physician with a practice address in Los Gatos, California, and NPI 1306878772, issued on Jul 7, 2006. Check the license (California A026187, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- J Kirk Zimmer
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A026187 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15066 Los Gatos Almaden RD, Los Gatos, CA 95032
- Phone
- (408) 377-9180
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 377-1459
- Medicaid ID
- YYY20599Y CA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 15066 Los Gatos Almaden RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify J Kirk Zimmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A026187Check 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% more Medicare Part D claims than the average family medicine physician in 2024
3,600 Medicare Part D claims for 487 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 117 claims were for opioids.
Most prescribed
- Atorvastatin Calcium258 claims
- Amlodipine Besylate205 claims
- Levothyroxine Sodium151 claims
- Metoprolol Succinate143 claims
- Metformin Hcl137 claims
- Losartan Potassium92 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 65.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $436.50
10 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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.
J Kirk Zimmer among 17,133 family medicine physician records in California
J Kirk Zimmer, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 family medicine physician records list a practice address in Los Gatos
They are 45 of the 1,905 NPPES records with a practice address in Los Gatos, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Los Gatos → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Timothy Jen, M.D.Los Gatos, CA 950321013944628
- Neeraj Kochhar, MDLos Gatos, CA 950321033180294
- Thao Nguyen, MDLos Gatos, CA 950321619909975
- Arthur Polussa, M.D.Los Gatos, CA 950321629062021
Common questions
What is J Kirk Zimmer, MD's NPI number?
J Kirk Zimmer, MD's National Provider Identifier (NPI) is 1306878772, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is J Kirk Zimmer, MD located?
The NPPES record lists a practice address at 15066 Los Gatos Almaden RD, Los Gatos, CA, 95032. Phone: (408) 377-9180. Providers update this record themselves, so call before visiting.
How can I verify J Kirk Zimmer, MD's license?
NPPES lists California license number A026187, 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 J Kirk Zimmer, MD prescribe under Medicare Part D?
In 2024, J Kirk Zimmer, MD had 3,600 Medicare Part D claims for 487 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is J Kirk Zimmer, MD's MIPS final score?
The 2023 MIPS final score is 65.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.