Richard Allen Guerrero, M.D.
Surgery Physician · Fountain Valley, CA
Richard Allen Guerrero, M.D. is a surgery physician with a practice address in Fountain Valley, California, and NPI 1891715835, issued on Jul 20, 2006. Check the license (California A79327, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard Allen Guerrero
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A79327 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11100 Warner Ave Ste 266, Fountain Valley, CA 92708
- Phone
- (714) 617-4733
- Enumerated
- Jul 20, 2006
- Record last updated
- Jul 31, 2026
- Fax
- (714) 617-4748
- Medicare enrollment
- Enrolled (PECOS I20100706000596); may accept Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Verify Richard Allen Guerrero in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79327Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average surgery physician in 2024
67 Medicare Part D claims for 62 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Tramadol Hcl57 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: $1,063.23
14 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Richard Allen Guerrero among 3,118 surgery physician records in California
Richard Allen Guerrero, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% 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, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2000 · median 2003 among the 1,901 with a school on file
- Record last updated2026 · 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 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Fountain Valley → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Joel Berman, M.D.Fountain Valley, CA 927081790724490
- Sean Cao, M.D.Fountain Valley, CA 927081558360966
- Edgar Fernandez, M.D.Fountain Valley, CA 927081861456980
- Sahil Gambhir, M.D.Fountain Valley, CA 927081760878607
- Atif Iqbal, MDFountain Valley, CA 927081669592473
- Quy Le, M.D.Fountain Valley, CA 927081073762274
- Thang Nguyen, MDFountain Valley, CA 927081831279009
- Parin Patel, M.D.Fountain Valley, CA 927081275780207
Common questions
What is Richard Allen Guerrero, M.D.'s NPI number?
Richard Allen Guerrero, M.D.'s National Provider Identifier (NPI) is 1891715835, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Richard Allen Guerrero, M.D. located?
The NPPES record lists a practice address at 11100 Warner Ave Ste 266, Fountain Valley, CA, 92708. Phone: (714) 617-4733. Providers update this record themselves, so call before visiting.
How can I verify Richard Allen Guerrero, M.D.'s license?
NPPES lists California license number A79327, 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 Richard Allen Guerrero, M.D. prescribe under Medicare Part D?
In 2024, Richard Allen Guerrero, M.D. had 67 Medicare Part D claims for 62 beneficiaries; the average among surgery physician prescribers was 147. 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.