Hilary Johnston, PA-C, MMS
Medical Physician Assistant · San Bruno, CA
Hilary Johnston, PA-C, MMS is a medical physician assistant with a practice address in San Bruno, California, and NPI 1649626177, issued on May 13, 2016. Check the license (California 53387, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hilary Johnston
- Credential
- PA-C, MMS
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 53387 CA
Self-reported in NPPES; status is on the state search - Practice location
- 801 Traeger Ave Ste 310, San Bruno, CA 94066
- Phone
- (650) 742-5969
- Enumerated
- May 13, 2016
- Record last updated
- Jan 3, 2022
- Fax
- (650) 742-7116
- Medicare enrollment
- Enrolled (PECOS I20160602001274); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 801 Traeger Ave Ste 310
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hilary 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 53387Check 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 medical physician assistant in 2024
463 Medicare Part D claims for 153 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Mupirocin42 claims
- Betamethasone Diprop Augmented40 claims
- Clobetasol Propionate39 claims
- Metronidazole28 claims
- Tacrolimus28 claims
- Ketoconazole25 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
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hilary Johnston among 3,376 medical physician assistant records in California
Hilary Johnston, PA-C, MMS is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 66% of them.
- NPI issued2016 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated2016 · median 2012 among the 1,347 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in San Bruno → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Thomas Lesinski, PASan Bruno, CA 940661083009427
- Diana BruceRedwood City, CA 940631801051529
- Shannon Fish, SHANNON FISH PA-CRedwood City, CA 940631255598793
- David Lague, MPA-CRedwood City, CA 940631295979227
- Kathleen Martino, PHYSICIAN ASSISTANTRedwood City, CA 940631578986048
- Lesley BowlerRedwood City, CA 940621346525938
- Dakota Kisling, PA-CRedwood City, CA 940621932947272
- Paige MedinaSan Carlos, CA 940701972272920
Common questions
What is Hilary Johnston, PA-C, MMS's NPI number?
Hilary Johnston, PA-C, MMS's National Provider Identifier (NPI) is 1649626177, issued on May 13, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Hilary Johnston, PA-C, MMS located?
The NPPES record lists a practice address at 801 Traeger Ave Ste 310, San Bruno, CA, 94066. Phone: (650) 742-5969. Providers update this record themselves, so call before visiting.
How can I verify Hilary Johnston, PA-C, MMS's license?
NPPES lists California license number 53387, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hilary Johnston, PA-C, MMS prescribe under Medicare Part D?
In 2024, Hilary Johnston, PA-C, MMS had 463 Medicare Part D claims for 153 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.