Brian David Johnston, P.A.
Physician Assistant · Los Gatos, CA
Brian David Johnston, P.A. is a physician assistant with a practice address in Los Gatos, California, and NPI 1508269192, issued on Sep 26, 2014. Check the license (California 51974, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brian David Johnston
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 51974 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15400 Los Gatos Blvd, Los Gatos, CA 95032
- Phone
- (408) 739-6000
- Enumerated
- Sep 26, 2014
- Record last updated
- Apr 14, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170427000444); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 15400 Los Gatos Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian David Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 51974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average physician assistant in 2024
334 Medicare Part D claims for 149 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium39 claims
- Paxlovid15 claims
- Azithromycin13 claims
- Cephalexin13 claims
- Quetiapine Fumarate13 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
- Sutter Bay Medical FoundationLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian David Johnston among 14,451 physician assistant records in California
Brian David Johnston, P.A. is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 38% of them.
- NPI issued2014 · 38% of these records are older, 59% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2014 · median 2018 among the 7,214 with a school on file
- Record last updated2017 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 physician assistant records list a practice address in Los Gatos
They are 31 of the 1,905 NPPES records with a practice address in Los Gatos, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Gatos → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Alexandra Clancy, P.A.Los Gatos, CA 950321912453143
- Roshni Desai, PA-CLos Gatos, CA 950321548562671
- Hamdan Fayad, P.A-CLos Gatos, CA 950321194770578
- Camilla Flemate, PA-CLos Gatos, CA 950321962638569
- Melinia Honjo, DHSC, P.A.-CLos Gatos, CA 950321386713147
- Tara Kuroiwa, PACLos Gatos, CA 950321215916135
- Julie Lam, PA-CLos Gatos, CA 950321346639671
- Chelsea Lawrance, PACLos Gatos, CA 950321255869178
Common questions
What is Brian David Johnston, P.A.'s NPI number?
Brian David Johnston, P.A.'s National Provider Identifier (NPI) is 1508269192, issued on Sep 26, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Brian David Johnston, P.A. located?
The NPPES record lists a practice address at 15400 Los Gatos Blvd, Los Gatos, CA, 95032. Phone: (408) 739-6000. Providers update this record themselves, so call before visiting.
How can I verify Brian David Johnston, P.A.'s license?
NPPES lists California license number 51974, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Brian David Johnston, P.A. prescribe under Medicare Part D?
In 2024, Brian David Johnston, P.A. had 334 Medicare Part D claims for 149 beneficiaries; the average among physician assistant prescribers was 830. 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.