Devin Osullivan Hiller, PA
Physician Assistant · Palo Alto, CA
Devin Osullivan Hiller, PA is a physician assistant with a practice address in Palo Alto, California, and NPI 1558080572, issued on Aug 23, 2022. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Devin Osullivan Hiller
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 300 Pasteur Dr, Palo Alto, CA 94304
- Phone
- (650) 723-8000
- Enumerated
- Aug 23, 2022
- Record last updated
- May 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20231223000294); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2023
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Devin Osullivan Hiller 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
97% fewer Medicare Part D claims than the average physician assistant in 2024
27 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Devin Osullivan Hiller among 14,451 physician assistant records in California
Devin Osullivan Hiller, PA 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 2022, is newer than 73% of them.
- NPI issued2022 · 73% of these records are older, 20% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2023 · median 2018 among the 7,214 with a school on file
- Record last updated2024 · 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).
155 physician assistant records list a practice address in Palo Alto
They are 155 of the 7,617 NPPES records with a practice address in Palo Alto, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Palo Alto → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Tracy Berggren, PA-CPalo Alto, CA 943041407018468
- Camille Bloom, PA-CPalo Alto, CA 943041558670588
- Emily Dong, PA-CPalo Alto, CA 943041376853622
- Rosanna Duester, PA-CPalo Alto, CA 943041225280159
- Erin Frawley, PAPalo Alto, CA 943041942452149
- Jacqueline Julty, PA-CPalo Alto, CA 943041184759649
- Clair Kuriakose, PAPalo Alto, CA 943041710141718
- Lynn Maestretti, PA-CPalo Alto, CA 943041710150024
Common questions
What is Devin Osullivan Hiller, PA's NPI number?
Devin Osullivan Hiller, PA's National Provider Identifier (NPI) is 1558080572, issued on Aug 23, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Devin Osullivan Hiller, PA located?
The NPPES record lists a practice address at 300 Pasteur Dr, Palo Alto, CA, 94304. Phone: (650) 723-8000. Providers update this record themselves, so call before visiting.
How can I verify Devin Osullivan Hiller, PA's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Devin Osullivan Hiller, PA prescribe under Medicare Part D?
In 2024, Devin Osullivan Hiller, PA had 27 Medicare Part D claims; 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.