NPPES file of Aug 9, 2026

Kathi Sue Gardner, FNP-C

General Practice Registered Nurse · Stockton, CA

Kathi Sue Gardner, FNP-C is a general practice registered nurse with a practice address in Stockton, California, and NPI 1689017972, issued on Apr 17, 2013. Check the license (California 21599, 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
1689017972
Name
Kathi Sue Gardner
Credential
FNP-C
Primary taxonomy
General Practice Registered Nurse 163WG0000X
License number
21599 CA
Self-reported in NPPES; status is on the state search
Practice location
2333W March LN A1, Stockton, CA 95207
Phone
(209) 475-8144
Enumerated
Apr 17, 2013
Record last updated
Sep 3, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(209) 474-7679
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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Verify Kathi Sue Gardner 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 21599
    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
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61% fewer Medicare Part D claims than the average general practice registered nurse in 2024

558 Medicare Part D claims for 175 beneficiaries, against an average of 1,419 among the 111 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 49 claims were for opioids.

  1. Kathi Gardner558
  2. Specialty average1,419

Most prescribed

  1. Ondansetron Odt93 claims
  2. Prochlorperazine Maleate45 claims
  3. Letrozole38 claims
  4. Lidocaine-Prilocaine34 claims
  5. Hydrocodone-Acetaminophen21 claims
  6. Prednisone21 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: $1,936.63

61 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 102 providers of this specialty with any payment received $394.13 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kathi Gardner$1,936.63
  2. Specialty average$394.13

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Kathi Sue Gardner among 460 general practice registered nurse records in California

Kathi Sue Gardner, FNP-C is one of 460 general practice registered nurse records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 16% of them.

  • NPI issued2013 · 16% of these records are older, 83% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileNo · 2% of these records are
  • Record last updated2015 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 163WG0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Registered Nurse providers in California

There are 460 general practice registered nurse records in California.

The 8 general practice registered nurse records with the nearest ZIP codes

  1. Tiffany Dinh, RNStockton, CA 952071538326731
  2. Surbhi JayantStockton, CA 952051730532524
  3. Nancy TangSan Jose, CA 951481770475055
  4. Effie Mae Buckley, R.N., M.N.San Jose, CA 951391154464659
  5. Patricia Marovich, RN, BSNSan Jose, CA 951391609041219
  6. Mary Vivian Aranda, BSN RNSan Jose, CA 951381447832175
  7. Alyssa LeonardSan Jose, CA 951341629551882
  8. Myron Ubungen, MSN RNSan Jose, CA 951121124846134

Common questions

What is Kathi Sue Gardner, FNP-C's NPI number?

Kathi Sue Gardner, FNP-C's National Provider Identifier (NPI) is 1689017972, issued on Apr 17, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Kathi Sue Gardner, FNP-C located?

The NPPES record lists a practice address at 2333W March LN A1, Stockton, CA, 95207. Phone: (209) 475-8144. Providers update this record themselves, so call before visiting.

How can I verify Kathi Sue Gardner, FNP-C's license?

NPPES lists California license number 21599, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Kathi Sue Gardner, FNP-C prescribe under Medicare Part D?

In 2024, Kathi Sue Gardner, FNP-C had 558 Medicare Part D claims for 175 beneficiaries; the average among general practice registered nurse prescribers was 1,419. 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.