NPPES file of Aug 9, 2026

Katherine Mary Onstott, C.N.S

Gerontology Clinical Nurse Specialist · San Jose, CA

Katherine Mary Onstott, C.N.S is a gerontology clinical nurse specialist with a practice address in San Jose, California, and NPI 1699964163, issued on Oct 19, 2007. Check the license (California 2801, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1699964163
Name
Katherine Mary Onstott
Credential
C.N.S
Primary taxonomy
Gerontology Clinical Nurse Specialist 364SG0600X
License number
2801 CA
Self-reported in NPPES; status is on the state search
Practice location
275 Hospital Parkway, San Jose, CA 95119
Phone
(408) 972-6301
Enumerated
Oct 19, 2007
Record last updated
Oct 19, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(408) 972-6759
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest gerontology clinical nurse specialist records → All 50 in California → Look up another NPI →

Also registered at 275 Hospital Parkway

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

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  2. Sharon Sclabassi, PHD LCSWPsychologist1326185646
  3. Bach-Nga Shenoy, PHARM.D.Pharmacist1376603548
  4. Beckie SiuAmbulatory Care Pharmacist1437609492

Verify Katherine Mary Onstott 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 2801    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

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Katherine Mary Onstott among 50 gerontology clinical nurse specialist records in California

Katherine Mary Onstott, C.N.S is one of 50 gerontology clinical nurse specialist records with a practice address in California. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 10% of them.

  • NPI issued2007 · 10% of these records are older, 78% newer
  • In a Medicare fileNo · 14% of these records are
  • In the CMS Doctors and Clinicians fileNo · 2% of these records are
  • Record last updated2007 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364SG0600X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gerontology Clinical Nurse Specialist providers in California

There are 50 gerontology clinical nurse specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 50 in California → Every provider in San Jose → Gerontology Clinical Nurse Specialist nationwide →

The 8 gerontology clinical nurse specialist records with the nearest ZIP codes

  1. Chad JohnsonSanta Cruz, CA 950651619772506
  2. Melinda Gaynor, RN, AG-CNSSanta Clara, CA 950511255870630
  3. Elaine Mae Suguitan, MS RN CNSCupertino, CA 950141598899254
  4. Yelena Kruse, AGCNS-BCSan Rafael, CA 949031417320573
  5. Julie Mena, RN BSN MSN CNSSonora, CA 953701790111003
  6. Sarah Cluff, RNBerkeley, CA 947031417301581
  7. Dianne SorreraVallejo, CA 945911750167664
  8. Jennifer CanlasVallejo, CA 945891114471794

Common questions

What is Katherine Mary Onstott, C.N.S's NPI number?

Katherine Mary Onstott, C.N.S's National Provider Identifier (NPI) is 1699964163, issued on Oct 19, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Mary Onstott, C.N.S located?

The NPPES record lists a practice address at 275 Hospital Parkway, San Jose, CA, 95119. Phone: (408) 972-6301. Providers update this record themselves, so call before visiting.

How can I verify Katherine Mary Onstott, C.N.S's license?

NPPES lists California license number 2801, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.