NPPES file of Aug 9, 2026

Charles R. Brandsmeier, APNP

Gerontology Nurse Practitioner · Mill Valley, CA

Charles R. Brandsmeier, APNP is a gerontology nurse practitioner with a practice address in Mill Valley, California, and NPI 1891214763, issued on Sep 12, 2017. Check the license (California 95011657, 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
1891214763
Name
Charles R. Brandsmeier
Credential
APNP
Primary taxonomy
Gerontology Nurse Practitioner 363LG0600X
License numbers
95011657 CA
7960 WI
7960-033 WI
Self-reported in NPPES; status is on the state search
Practice location
750 Redwood Hwy Frontage RD Ste 1210, Mill Valley, CA 94941
Phone
(888) 663-6331
Enumerated
Sep 12, 2017
Record last updated
Oct 29, 2024
Fax
(415) 252-7176
Medicaid ID
100071920 WI
Medicare enrollment
Enrolled (PECOS I20220624002604); accepts Medicare assignment
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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Also registered at 750 Redwood Hwy Frontage RD Ste 1210

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

  1. Jennifer Baldwin, APRNNurse Practitioner1447772850
  2. Kathy Chang-Lipsenthal, MDInternal Medicine Physician1356340079
  3. Neha Choubey, DOFamily Medicine Physician1316575665
  4. David Cole, M.D.Family Medicine Physician1174919476
  5. Laura Collins, MDInternal Medicine Physician1619976339
  6. Laravic Flores, M.D.Family Medicine Physician1013398973

Verify Charles R. Brandsmeier 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 95011657
    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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88% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024

158 Medicare Part D claims for 113 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Charles Brandsmeier158
  2. Specialty average1,369

Most prescribed

  1. Doxycycline Hyclate28 claims
  2. Prednisone20 claims
  3. Paxlovid12 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 3 group practices

  1. Northbay Health Medical FoundationVacaville, CA
  2. Northbay Physicians Surgery Center, LLCAmerican Canyon, CA
  3. Providence Medical FoundationNapa, CA

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

Charles R. Brandsmeier among 569 gerontology nurse practitioner records in California

Charles R. Brandsmeier, APNP is one of 569 gerontology nurse practitioner records with a practice address in California. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 46% of them.

  • NPI issued2017 · 46% of these records are older, 49% newer
  • In a Medicare fileYes · 64% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated2017 · median 2018 among the 239 with a school on file
  • Record last updated2024 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gerontology Nurse Practitioner providers in California

There are 569 gerontology nurse practitioner records in California.

The 8 gerontology nurse practitioner records with the nearest ZIP codes

  1. Barbara Gionet Hasson, NPMill Valley, CA 949411740554609
  2. Irina Bazavan, NPNovato, CA 949451932129707
  3. Ogo Ezeokeke, NPNovato, CA 949451437164126
  4. Winnie Seto, NPNovato, CA 949451235152869
  5. Guadalupe Chabriel, AGPCNPPetaluma, CA 949541003773532
  6. Holly McClure, NPRohnert Park, CA 949281023424348
  7. Debora Pierson, DNP, MSN, ANP-BCGilroy, CA 950201376434753
  8. Rosemary Makemteh, NPMorgan Hill, CA 950371386410108

Common questions

What is Charles R. Brandsmeier, APNP's NPI number?

Charles R. Brandsmeier, APNP's National Provider Identifier (NPI) is 1891214763, issued on Sep 12, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Charles R. Brandsmeier, APNP located?

The NPPES record lists a practice address at 750 Redwood Hwy Frontage RD Ste 1210, Mill Valley, CA, 94941. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.

How can I verify Charles R. Brandsmeier, APNP's license?

NPPES lists California license number 95011657, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Charles R. Brandsmeier, APNP prescribe under Medicare Part D?

In 2024, Charles R. Brandsmeier, APNP had 158 Medicare Part D claims for 113 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.