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KELLY HAMAMOTO PA-C
NPI 1427828052
Physician Assistant in Los Altos, CA

Active since January 04, 2024PECOS EnrolledAccepts Medicare Assignment
370 DISTEL CIR, LOS ALTOS, CA 94022(650) 254-5200 Get Directions Write a Review

NPPES record last updated: October 7, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 7, 2025, Jan 4, 2024 (2 updates tracked since 2024).

About Kelly Hamamoto Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KELLY HAMAMOTO PA-C (NPI 1427828052) is an individual physician assistant in Los Altos, California, licensed in California (63852) and active in the NPI registry since January 2024. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1427828052
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameKELLY HAMAMOTOCredential: PA-C
Location Address370 DISTEL CIRLos Altos, CA 94022-1404
Mailing Address370 Distel CirLos Altos, CA 94022-1404
Phone(650) 254-5200
Sole ProprietorYes
Medical School CMSOtherGraduated 2023
Enumeration DateJanuary 4, 2024
Last NPPES UpdateOctober 7, 20252 updates tracked since enumeration
NPPES CertifiedOctober 7, 2025
✔ NPI 1427828052 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · 63852
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
370 DISTEL CIR, Los Altos, CA 94022
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Kelly Hamamoto Pa-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254771686
PECOS Enrollment IDI20240501003288
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
23 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94022 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. RUIXUAN ZHANG DO
Family Medicine
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
KIRSTIN WOO MD
Obstetrics & Gynecology
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
HOLLY W CHOW PA-C
Physician Assistant
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
TINA WU LEUNG
Family Medicine
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
WILLIAM STRAW MD
Family Medicine
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
ABBIE CHRISTINE HAGEMAN MD
Obstetrics & Gynecology
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
GINA SERRAIOCCO MD
Internal Medicine
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200
LAILEY NAOMI OLIVA MD
Internal Medicine
370 DISTEL CIR
LOS ALTOS, CA 94022
Santa Clara County (650) 254-5200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kelly Hamamoto's NPI number?

The NPI number for Kelly Hamamoto is 1427828052. It was assigned to this individual provider in the NPPES registry on January 4, 2024.

Where is Kelly Hamamoto located?

Kelly Hamamoto practices at 370 Distel Cir, Los Altos, CA 94022. The listed phone number is (650) 254-5200.

What is Kelly Hamamoto's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Kelly Hamamoto enrolled in Medicare?

Yes. Kelly Hamamoto is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Kelly Hamamoto was last updated on October 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.