Michael A. Herrera, DO
Emergency Medical Services (Emergency Medicine) Physician · Stockton, CA
Michael A. Herrera, DO is an emergency medical services (emergency medicine) physician with a practice address in Stockton, California, and NPI 1104910744, issued on Oct 3, 2006. Check the license (California 20A6617, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael A. Herrera
- Credential
- DO
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- 20A6617 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1800 NO California Street, Stockton, CA 95204
- Phone
- (209) 473-6555
- Enumerated
- Oct 3, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (209) 473-6544
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at 1800 NO California Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ernest Almendarez, MDEmergency Medical Services (Emergency Medicine) Physician1821182338
- Ellison Cordray, MDEmergency Medical Services (Emergency Medicine) Physician1033204490
Verify Michael A. Herrera in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A6617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
160 Medicare Part D claims for 23 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Tamsulosin Hcl18 claims
- Finasteride15 claims
- Baclofen12 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: $20.00
1 payment: education; the largest payer was Csl Behring. The 489 providers of this specialty with any payment received $337.59 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.
Michael A. Herrera among 233 emergency medical services (emergency medicine) physician records in California
Michael A. Herrera, DO is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% 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, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Stockton → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Ernest Almendarez, MDStockton, CA 952041821182338
- Ellison Cordray, MDStockton, CA 952041033204490
- Eric Sterling, MDStockton, CA 952191548313877
- Jasleen DhaliwalManteca, CA 953361093246779
- Kenneth Smith, MDMariposa, CA 953381285725937
- Nicholas BrownSanta Cruz, CA 950621144846072
- Andrew Stone, MDSanta Cruz, CA 950621598995433
- Joseph Dagostino, D.O.Modesto, CA 953551619919735
Common questions
What is Michael A. Herrera, DO's NPI number?
Michael A. Herrera, DO's National Provider Identifier (NPI) is 1104910744, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael A. Herrera, DO located?
The NPPES record lists a practice address at 1800 NO California Street, Stockton, CA, 95204. Phone: (209) 473-6555. Providers update this record themselves, so call before visiting.
How can I verify Michael A. Herrera, DO's license?
NPPES lists California license number 20A6617, 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 A. Herrera, DO prescribe under Medicare Part D?
In 2024, Michael A. Herrera, DO had 160 Medicare Part D claims for 23 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.