Michael Jeremy Gerstein, M.D.
Emergency Medicine Physician · Santa Rosa, CA
Michael Jeremy Gerstein, M.D. is an emergency medicine physician with a practice address in Santa Rosa, California, and NPI 1417186107, issued on Jul 2, 2009. Check the license (California A120837, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Jeremy Gerstein
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A120837 CA
Self-reported in NPPES; status is on the state search - Practice location
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Phone
- (707) 800-5894
- Enumerated
- Jul 2, 2009
- Record last updated
- Mar 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20121005000378); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 401 Bicentennial Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Ackerman, RNRegistered Nurse1376409409
- Patricia AdamsPhysical Therapist1124971825
- Hugo Aguilar, PHARMDPharmacist1992389134
- Heather Aiello, OTR/LOccupational Therapist1851155022
- Sandra Akrawi, REGISTERED DIETITIANRegistered Dietitian1790821031
- Miguel Alcala, LCSWClinical Social Worker1629857891
Verify Michael Jeremy Gerstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120837Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average emergency medicine physician in 2024
284 Medicare Part D claims for 182 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 40 claims were for opioids.
Most prescribed
- Ondansetron Odt38 claims
- Oxycodone Hcl27 claims
- Cefpodoxime Proxetil24 claims
- Tamsulosin Hcl15 claims
- Amoxicillin-Clavulanate Potass12 claims
- Cefadroxil11 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Jeremy Gerstein among 7,751 emergency medicine physician records in California
Michael Jeremy Gerstein, M.D. is one of 7,751 emergency 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 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2011 among the 4,560 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Santa Rosa → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Tucker Bierbaum, M.D.Santa Rosa, CA 954031841234408
- Cyrus Colbert, MDSanta Rosa, CA 954031073697140
- Robert Duchynski, MDSanta Rosa, CA 954031538243522
- Eberle Ewing, MDSanta Rosa, CA 954031629152798
- Shawn Franklin, MDSanta Rosa, CA 954031669422507
- Stephen Fuette, MDSanta Rosa, CA 954031497840664
- Robert Galbraith, MDSanta Rosa, CA 954031194809160
- Tinh Hua, DOSanta Rosa, CA 954031871561100
Common questions
What is Michael Jeremy Gerstein, M.D.'s NPI number?
Michael Jeremy Gerstein, M.D.'s National Provider Identifier (NPI) is 1417186107, issued on Jul 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Michael Jeremy Gerstein, M.D. located?
The NPPES record lists a practice address at 401 Bicentennial Way, Santa Rosa, CA, 95403. Phone: (707) 800-5894. Providers update this record themselves, so call before visiting.
How can I verify Michael Jeremy Gerstein, M.D.'s license?
NPPES lists California license number A120837, 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 Michael Jeremy Gerstein, M.D. prescribe under Medicare Part D?
In 2024, Michael Jeremy Gerstein, M.D. had 284 Medicare Part D claims for 182 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.