Charles Frank Johnson
Specialist · San Francisco, CA
Charles Frank Johnson is a specialist with a practice address in San Francisco, California, and NPI 1861084105, issued on Feb 8, 2021. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Charles Frank Johnson
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 1638 Kirkwood Ave, San Francisco, CA 94124
- Phone
- (415) 814-3254
- Enumerated
- Feb 8, 2021
- Record last updated
- Mar 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 1638 Kirkwood Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jay Alton, AA, RASIStudent in an Organized Health Care Education/Training Program1770858201
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- Courtney BracySpecialist1184205320
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Verify Charles Frank Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Charles Frank Johnson among 5,749 specialist records in California
Charles Frank Johnson is one of 5,749 specialist records with a practice address in California. 30% 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 2021, is newer than 88% of them.
- NPI issued2021 · 88% of these records are older, 11% newer
- In a Medicare fileNo · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2021 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
666 specialist records list a practice address in San Francisco
They are 666 of the 38,143 NPPES records with a practice address in San Francisco, and 5,749 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,749 in California → Every provider in San Francisco → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Courtney BracySan Francisco, CA 941241184205320
- Sharon BroussardSan Francisco, CA 941241023765054
- Elizabeth CookSan Francisco, CA 941241447680814
- Laronda FortenberrySan Francisco, CA 941241023540416
- Ariyana GraySan Francisco, CA 941241477175099
- Thomas JonesSan Francisco, CA 941241063035285
- Joanthan MurrellSan Francisco, CA 941241407593403
- Furu OuyangSan Francisco, CA 941241023358827
Common questions
What is Charles Frank Johnson's NPI number?
Charles Frank Johnson's National Provider Identifier (NPI) is 1861084105, issued on Feb 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Charles Frank Johnson located?
The NPPES record lists a practice address at 1638 Kirkwood Ave, San Francisco, CA, 94124. Phone: (415) 814-3254. Providers update this record themselves, so call before visiting.
How can I verify Charles Frank Johnson's license?
Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.