NPPES file of Aug 9, 2026

Kathryn E. Knott, PA

Physician Assistant · Palo Alto, CA

Kathryn E. Knott, PA is a physician assistant with a practice address in Palo Alto, California, and NPI 1629306469, issued on Dec 4, 2009. Check the license (California PA21108, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629306469
Name
Kathryn E. Knott
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
PA21108 CA
Self-reported in NPPES; status is on the state search
Practice location
795 EL Camino Real, Palo Alto, CA 94301
Phone
(650) 853-2985
Enumerated
Dec 4, 2009
Record last updated
Nov 3, 2022
Medicare enrollment
Enrolled (PECOS I20221027002411); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 795 EL Camino Real

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Hamza AbbasiInternal Medicine Physician1821545484
  2. Arman Abdalkhani, MDOtolaryngology Physician1356536130
  3. Sara AbrahamsInternal Medicine Physician1952988354
  4. Nana Efua Adabie, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1437647732
  5. Amy Adams, M.D.Dermatology Physician1679643928
  6. William Adams, DPMFoot & Ankle Surgery Podiatrist1447487830

Verify Kathryn E. Knott in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA21108
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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98% fewer Medicare Part D claims than the average physician assistant in 2024

13 Medicare Part D claims for 11 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 11 claims were for opioids.

  1. Kathryn Knott13
  2. Specialty average830

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

  1. Sutter Bay Medical FoundationSan Mateo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kathryn E. Knott among 14,451 physician assistant records in California

Kathryn E. Knott, 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 2009, is newer than 25% of them.

  • NPI issued2009 · 25% of these records are older, 73% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2009 · median 2018 among the 7,214 with a school on file
  • Record last updated2022 · 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.

The 8 physician assistant records with the nearest ZIP codes

  1. Sean Cutright, P.A.Palo Alto, CA 943011063581239
  2. Kathleen Erickson, PAPalo Alto, CA 943011063567295
  3. Sandra Ewers, PAPalo Alto, CA 943011104915370
  4. Kelly Heath, P.A-CPalo Alto, CA 943011174553168
  5. Zan Huang, PAPalo Alto, CA 943011831330240
  6. Douglas Jacobs, PAPalo Alto, CA 943011972639839
  7. Steven Johnson, P.A.Palo Alto, CA 943011063584126
  8. Danny Kay, P.A.-CPalo Alto, CA 943011568613339

Common questions

What is Kathryn E. Knott, PA's NPI number?

Kathryn E. Knott, PA's National Provider Identifier (NPI) is 1629306469, issued on Dec 4, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn E. Knott, PA located?

The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2985. Providers update this record themselves, so call before visiting.

How can I verify Kathryn E. Knott, PA's license?

NPPES lists California license number PA21108, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Kathryn E. Knott, PA prescribe under Medicare Part D?

In 2024, Kathryn E. Knott, PA had 13 Medicare Part D claims for 11 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.