Kirk R. Essenmacher, M.D.
Internal Medicine Physician · San Francisco, CA
Kirk R. Essenmacher, M.D. is an internal medicine physician with a practice address in San Francisco, California, and NPI 1932233673, issued on Mar 15, 2007. Check the license (California A60417, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kirk R. Essenmacher
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A60417 CA
Self-reported in NPPES; status is on the state search - Practice location
- 375 Laguna Honda Blvd, San Francisco, CA 94116
- Phone
- (415) 759-2388
- Enumerated
- Mar 15, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (415) 759-4587
- Medicare enrollment
- Enrolled (PECOS I20120224000308); accepts Medicare assignment
- Medical or professional school
- Yale University School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 375 Laguna Honda Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shahab Aghamir, MDInternal Medicine Physician1275778243
- Martin Albion, MDInternal Medicine Physician1548397896
- Lucy Andrade, MS, CCC SLPSpeech-Language Pathologist1194854984
- Josephine Angcay, PTPhysical Therapist1255462362
- Fatima Ascano-Martin, DNP, RN, GCNS-BCMedical-Surgical Clinical Nurse Specialist1710205158
- Lai Lai Aung, M.DInternal Medicine Physician1396945127
Verify Kirk R. Essenmacher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A60417Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
274 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Memantine Hcl41 claims
- Baclofen18 claims
- Gabapentin17 claims
- Duloxetine Hcl14 claims
- Lamotrigine11 claims
- Mirtazapine11 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): 90.3 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).
Bills Medicare through one group practice
- City And County OF San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kirk R. Essenmacher among 17,696 internal medicine physician records in California
Kirk R. Essenmacher, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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
- Martin Albion, MDSan Francisco, CA 941161548397896
- Victoria Behrman, MDSan Francisco, CA 941161700925484
- Iling Chen, MDSan Francisco, CA 941161043350143
- Lisa Hoo, MDSan Francisco, CA 941161487794053
- Derek Kerr, MDSan Francisco, CA 941161861531485
- Emily Kinebuchi, MDSan Francisco, CA 941161760494645
- Christina Lee, MDSan Francisco, CA 941161639213663
- Julio Pineda, MDSan Francisco, CA 941161295870053
Common questions
What is Kirk R. Essenmacher, M.D.'s NPI number?
Kirk R. Essenmacher, M.D.'s National Provider Identifier (NPI) is 1932233673, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kirk R. Essenmacher, M.D. located?
The NPPES record lists a practice address at 375 Laguna Honda Blvd, San Francisco, CA, 94116. Phone: (415) 759-2388. Providers update this record themselves, so call before visiting.
How can I verify Kirk R. Essenmacher, M.D.'s license?
NPPES lists California license number A60417, 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 Kirk R. Essenmacher, M.D. prescribe under Medicare Part D?
In 2024, Kirk R. Essenmacher, M.D. had 274 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Kirk R. Essenmacher, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.3 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.