Kelly Hamamoto, PA-C
Physician Assistant · Los Altos, CA
Kelly Hamamoto, PA-C is a physician assistant with a practice address in Los Altos, California, and NPI 1427828052, issued on Jan 4, 2024. Check the license (California 63852, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kelly Hamamoto
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 63852 CA
Self-reported in NPPES; status is on the state search - Practice location
- 370 Distel Cir, Los Altos, CA 94022
- Phone
- (650) 254-5200
- Enumerated
- Jan 4, 2024
- Record last updated
- Oct 7, 2025
- Medicare enrollment
- Enrolled (PECOS I20240501003288); 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 370 Distel Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kelly Hamamoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 63852Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average physician assistant in 2024
53 Medicare Part D claims for 35 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of 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.
Industry payments in 2024: $135.64
1 payment: food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelly Hamamoto among 14,451 physician assistant records in California
Kelly Hamamoto, PA-C 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 2024, is newer than 87% of them.
- NPI issued2024 · 87% of these records are older, 7% 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 updated2025 · 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).
8 physician assistant records list a practice address in Los Altos
They are 8 of the 718 NPPES records with a practice address in Los Altos, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Altos → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Holly Chow, PA-CLos Altos, CA 940221033742648
- Amanda Liew, PA-C, MSPASLos Altos, CA 940221992270649
- Anh Phung, PA-CLos Altos, CA 940221699312470
- Ganna Baetge, PA-CLos Altos, CA 940241174883250
- Angela HavenLos Altos, CA 940241679148514
- Christine Hurley, PA-CLos Altos, CA 940241942866165
- Heidi Keesis, PA-CLos Altos, CA 940241871809574
- Linda Nguyen, PA-CMenlo Park, CA 940251104670108
Common questions
What is Kelly Hamamoto, PA-C's NPI number?
Kelly Hamamoto, PA-C's National Provider Identifier (NPI) is 1427828052, issued on Jan 4, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Kelly Hamamoto, PA-C located?
The NPPES record lists a practice address at 370 Distel Cir, Los Altos, CA, 94022. Phone: (650) 254-5200. Providers update this record themselves, so call before visiting.
How can I verify Kelly Hamamoto, PA-C's license?
NPPES lists California license number 63852, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Kelly Hamamoto, PA-C prescribe under Medicare Part D?
In 2024, Kelly Hamamoto, PA-C had 53 Medicare Part D claims for 35 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.