NPPES file of Aug 9, 2026

Allen William Cortez, M.D.

Surgery Physician · Santa Rosa, CA

Allen William Cortez, M.D. is a surgery physician with a practice address in Santa Rosa, California, and NPI 1518916089, issued on May 10, 2006. Check the license (California G76718, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518916089
Name
Allen William Cortez
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License number
G76718 CA
Self-reported in NPPES; status is on the state search
Practice location
1701 4TH St, Santa Rosa, CA 95404
Phone
(707) 579-2100
Enumerated
May 10, 2006
Record last updated
Feb 7, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(707) 523-0616
Medicaid IDs
00G767181 CA
00G767180 CA
Medicare enrollment
Enrolled (PECOS I20060911000509); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 1991
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest surgery physician records → All 3,118 in California → Look up another NPI →

Also registered at 1701 4TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dona Brumbley, RT (R) (CT)Diagnostic Radiology Physician1184245870
  2. Jayme Fellores, AU.D.Audiologist1114274388
  3. Abdul Harris, M.D.Surgery Physician1396859393
  4. Robert James, M.D.Urology Physician1558380683
  5. John Jarvis, PH.D.Audiologist1275772907
  6. Adam Kaplan, M.D.Urology Physician1306078050

Verify Allen William Cortez in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G76718    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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10% more Medicare Part D claims than the average surgery physician in 2024

161 Medicare Part D claims for 88 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 77 claims were for opioids.

  1. Allen Cortez161
  2. Specialty average147

Most prescribed

  1. Oxycodone Hcl73 claims
  2. Metronidazole14 claims
  3. Neomycin Sulfate13 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: $6,265.20

26 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon 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.

  1. Allen Cortez$6,265.20
  2. Specialty average$3,513.80

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Sutter Bay Medical FoundationSanta Rosa, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Allen William Cortez among 3,118 surgery physician records in California

Allen William Cortez, 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
  • Graduated1991 · median 2003 among the 1,901 with a school on file
  • Record last updated2012 · 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 Santa Rosa → Surgery Physician nationwide →

The 8 surgery physician records with the nearest ZIP codes

  1. Abdul Harris, M.D.Santa Rosa, CA 954041396859393
  2. Alexander Lozano, MDSanta Rosa, CA 954041477528859
  3. Brian Schmidt, M.D.Santa Rosa, CA 954041275614596
  4. David Soto, M.D.Santa Rosa, CA 954041932207255
  5. Robert Woodbury, M.D.Santa Rosa, CA 954041871607937
  6. Mitchell Bailey, M.D.Santa Rosa, CA 954031366422008
  7. Richard Bland, MDSanta Rosa, CA 954031891879862
  8. Charles Elboim, M.D.Santa Rosa, CA 954051770672610

Common questions

What is Allen William Cortez, M.D.'s NPI number?

Allen William Cortez, M.D.'s National Provider Identifier (NPI) is 1518916089, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Allen William Cortez, M.D. located?

The NPPES record lists a practice address at 1701 4TH St, Santa Rosa, CA, 95404. Phone: (707) 579-2100. Providers update this record themselves, so call before visiting.

How can I verify Allen William Cortez, M.D.'s license?

NPPES lists California license number G76718, 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 Allen William Cortez, M.D. prescribe under Medicare Part D?

In 2024, Allen William Cortez, M.D. had 161 Medicare Part D claims for 88 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.