NPPES file of Aug 9, 2026

Vanessa Marie Mayen, R.N., N.P.

Family Nurse Practitioner · Berkeley, CA

Vanessa Marie Mayen, R.N., N.P. is a family nurse practitioner with a practice address in Berkeley, California, and NPI 1023462694, issued on Apr 19, 2016. Check the license (California 95004864, as entered in NPPES) with the California board that licenses this profession; 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
1023462694
Name
Vanessa Marie Mayen
Credential
R.N., N.P.
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
95004864 CA
95038673 CA
Self-reported in NPPES; status is on the state search
Practice location
837 Addison St, Berkeley, CA 94710
Phone
(510) 981-4100
Enumerated
Apr 19, 2016
Record last updated
Sep 14, 2022
Medicare enrollment
Enrolled (PECOS I20190117003440); accepts Medicare assignment
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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Also registered at 837 Addison St

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

  1. Syeda Bukhari, FNPFamily Nurse Practitioner1760181036
  2. Marisol Delgado Munoz, RNRegistered Nurse1588506315
  3. Sonam Dolkar, DNP-FNPFamily Nurse Practitioner1184346538
  4. Hannah Dragomanovich, DOFamily Medicine Physician1831770791
  5. Violet ElsonClinical Social Worker1912589722
  6. Lakeyla Gardner, NPPsychiatric/Mental Health Nurse Practitioner1396211645

Verify Vanessa Marie Mayen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95004864
    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
Find 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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41% fewer Medicare Part D claims than the average family nurse practitioner in 2024

774 Medicare Part D claims for 99 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 20 claims were for opioids.

  1. Vanessa Mayen774
  2. Specialty average1,305

Most prescribed

  1. Amlodipine Besylate62 claims
  2. Atorvastatin Calcium58 claims
  3. Lisinopril31 claims
  4. Metformin Hcl29 claims
  5. Jardiance25 claims
  6. Albuterol Sulfate Hfa23 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

  1. Lifelong Medical CareBerkeley, CA

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

Vanessa Marie Mayen among 16,966 family nurse practitioner records in California

Vanessa Marie Mayen, R.N., N.P. is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 35% of them.

  • NPI issued2016 · 35% of these records are older, 60% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2016 · median 2019 among the 6,793 with a school on file
  • Record last updated2022 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

76 family nurse practitioner records list a practice address in Berkeley

They are 76 of the 4,898 NPPES records with a practice address in Berkeley, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Rory Caygill-Walsh, NP-CBerkeley, CA 947101871979062
  2. Erica Diamant, FNPBerkeley, CA 947101053744508
  3. Catherine Flanagan, NPBerkeley, CA 947101790204212
  4. Lynmarie Knight, APRNBerkeley, CA 947101942728118
  5. Mae Jennifer LeBerkeley, CA 947101447765698
  6. Melinda Menke, MSN, FNP-CBerkeley, CA 947101578056453
  7. Napoleon Nazareno, NP-CBerkeley, CA 947101427466465
  8. Firoza RahimiBerkeley, CA 947101538547237

Common questions

What is Vanessa Marie Mayen, R.N., N.P.'s NPI number?

Vanessa Marie Mayen, R.N., N.P.'s National Provider Identifier (NPI) is 1023462694, issued on Apr 19, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Vanessa Marie Mayen, R.N., N.P. located?

The NPPES record lists a practice address at 837 Addison St, Berkeley, CA, 94710. Phone: (510) 981-4100. Providers update this record themselves, so call before visiting.

How can I verify Vanessa Marie Mayen, R.N., N.P.'s license?

NPPES lists California license number 95004864, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Vanessa Marie Mayen, R.N., N.P. prescribe under Medicare Part D?

In 2024, Vanessa Marie Mayen, R.N., N.P. had 774 Medicare Part D claims for 99 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.