NPPES file of Aug 9, 2026

Brian Mack, FNP-C

Nurse Practitioner · San Francisco, CA

Brian Mack, FNP-C is a nurse practitioner with a practice address in San Francisco, California, and NPI 1063979128, issued on Feb 25, 2019. Check the license 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
1063979128
Name
Brian Mack
Credential
FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
5011498 NC
Self-reported in NPPES; status is on the state search
Practice location
655 Montgomery St Ste 810, San Francisco, CA 94111
Phone
(844) 847-8216
Enumerated
Feb 25, 2019
Record last updated
Dec 19, 2023
Fax
(415) 520-9150
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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8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →

Also registered at 655 Montgomery St Ste 810

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

  1. Orly Aaron, NPFamily Nurse Practitioner1376912451
  2. Tashnie Burgess, FNPNurse Practitioner1861850398
  3. Brandt CrawfordFamily Nurse Practitioner1275290223
  4. Kayla Cunningham, MDEndocrinology, Diabetes & Metabolism Physician1609894534
  5. Allyson D'Amico, NPNurse Practitioner1205118858
  6. Kylie Di Lulo, NP-CNurse Practitioner1932741212

Verify Brian Mack in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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

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98% fewer Medicare Part D claims than the average nurse practitioner in 2024

22 Medicare Part D claims, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 59% of claims.

  1. Brian Mack22
  2. Specialty average1,109

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.

Brian Mack among 8,223 nurse practitioner records in California

Brian Mack, FNP-C is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 61% of them.

  • NPI issued2019 · 61% of these records are older, 34% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 42% of these records are
  • Record last updated2023 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in California

There are 8,223 nurse practitioner records in California.

All 8,223 in California → Every provider in San Francisco → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Sameerah Ali, FNP-BCSan Francisco, CA 941111558531566
  2. Stacey Baldwin, FNP-CSan Francisco, CA 941111285815860
  3. Veronda Carter-Smith, FNPSan Francisco, CA 941111437286432
  4. Allyson D'Amico, NPSan Francisco, CA 941111205118858
  5. Rachel Freitas, N.P.San Francisco, CA 941111225369739
  6. Mary Froehlich, GNPSan Francisco, CA 941111023222551
  7. Marcia Jacobs, F.N.P. - B.C.San Francisco, CA 941111841446556
  8. Ellen Kato, FNPSan Francisco, CA 941111598044844

Common questions

What is Brian Mack, FNP-C's NPI number?

Brian Mack, FNP-C's National Provider Identifier (NPI) is 1063979128, issued on Feb 25, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Brian Mack, FNP-C located?

The NPPES record lists a practice address at 655 Montgomery St Ste 810, San Francisco, CA, 94111. Phone: (844) 847-8216. Providers update this record themselves, so call before visiting.

How can I verify Brian Mack, FNP-C's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Brian Mack, FNP-C prescribe under Medicare Part D?

In 2024, Brian Mack, FNP-C had 22 Medicare Part D claims; the average among nurse practitioner prescribers was 1,109. 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.