NPPES file of Aug 9, 2026

Nancy Lynne Mayer, M.D.

Family Medicine Physician · Patterson, CA

Nancy Lynne Mayer, M.D. is a family medicine physician with a practice address in Patterson, California, and NPI 1437277530, issued on Mar 27, 2007. Check the license (California G88557, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1437277530
Name
Nancy Lynne Mayer
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
G88557 CA
0101235639 VA
Self-reported in NPPES; status is on the state search
Practice location
16720 Sycamore Ave, Patterson, CA 95363
Phone
(610) 557-2459
Enumerated
Mar 27, 2007
Record last updated
Dec 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Nancy Lynne Mayer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G88557
    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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Nancy Lynne Mayer among 17,133 family medicine physician records in California

Nancy Lynne Mayer, M.D. is one of 17,133 family 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 not. Its NPI, issued in 2007, is newer than 41% of them.

  • NPI issued2007 · 41% of these records are older, 47% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

9 family medicine physician records list a practice address in Patterson

They are 9 of the 159 NPPES records with a practice address in Patterson, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 family medicine physician records with the nearest ZIP codes

  1. Ali Abdul Wahid, MDPatterson, CA 953631679767925
  2. Amparo Campos, M.D.Patterson, CA 953631942596689
  3. David Hilburn, MDPatterson, CA 953631912957416
  4. Joseph Ricioli, DO (MAY 30, 2018)Patterson, CA 953631174010052
  5. Jose Rodriguez, M.D.Patterson, CA 953631043228661
  6. Navneet Saggu, MDPatterson, CA 953631881256568
  7. Saurabh Sharma, D.O.Patterson, CA 953631629136478
  8. Trong Trinh, DOPatterson, CA 953631295718054

Common questions

What is Nancy Lynne Mayer, M.D.'s NPI number?

Nancy Lynne Mayer, M.D.'s National Provider Identifier (NPI) is 1437277530, issued on Mar 27, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Nancy Lynne Mayer, M.D. located?

The NPPES record lists a practice address at 16720 Sycamore Ave, Patterson, CA, 95363. Phone: (610) 557-2459. Providers update this record themselves, so call before visiting.

How can I verify Nancy Lynne Mayer, M.D.'s license?

NPPES lists California license number G88557, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.