NPPES file of Aug 9, 2026

Kathryn Kui-Lan Holder, M.D.

Family Medicine Physician · Fairfield, CA

Kathryn Kui-Lan Holder, M.D. is a family medicine physician with a practice address in Fairfield, California, and NPI 1962499392, issued on Sep 30, 2005. Check the license on the Medical Board of California; 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
1962499392
Name
Kathryn Kui-Lan Holder
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
MD049016L PA
Self-reported in NPPES; status is on the state search
Practice location
101 Bodin Cir, Fairfield, CA 94535
Phone
(707) 423-3765
Enumerated
Sep 30, 2005
Record last updated
Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20151201002969); accepts Medicare assignment
Medical or professional school
Ohio State University College Of Medicine, 1990
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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8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 101 Bodin Cir

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

  1. Angela Aguayo, MSWSocial Worker1225504897
  2. Artemio Alanis, PHARMDOncology Pharmacist1396513982
  3. Traci Allen, RNCase Management Registered Nurse1669292132
  4. Rachel Anderson, MDAnesthesiology Physician1942730072
  5. Eugene Asabor, DDSDentist1568300242
  6. Savannah Bahls, DOMilitary Health Care Provider1619764008

Verify Kathryn Kui-Lan Holder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of CaliforniaCheck 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
Open the California license search

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51% fewer Medicare Part D claims than the average family medicine physician in 2024

1,736 Medicare Part D claims for 307 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 45 claims were for opioids.

  1. Kathryn Holder1,736
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium194 claims
  2. Amlodipine Besylate95 claims
  3. Losartan Potassium86 claims
  4. Losartan-Hydrochlorothiazide59 claims
  5. Albuterol Sulfate Hfa52 claims
  6. Levothyroxine Sodium52 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncVallejo, CA

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

Kathryn Kui-Lan Holder among 17,133 family medicine physician records in California

Kathryn Kui-Lan Holder, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 94% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1990 · median 2005 among the 10,652 with a school on file
  • Record last updated2021 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

67 family medicine physician records list a practice address in Fairfield

They are 67 of the 3,595 NPPES records with a practice address in Fairfield, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Fairfield → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Joann Basaran, MDTravis Afb, CA 945351184610305
  2. Ronald Crandall, M.D.Travis Afb, CA 945351861473456
  3. Byron Hepburn, MDTravis Afb, CA 945351730178021
  4. Ilda Isaza, D.O.Travis Afb, CA 945351871512913
  5. Gregory Kennebeck, MDTravis Afb, CA 945351871579847
  6. Nonato Largoza, MDTravis Afb, CA 945351609817303
  7. Daniel Murray, M.D., M.P.H.Travis Afb, CA 945351285613018
  8. David Olson, M.D.Travis Afb, CA 945351134105000

Common questions

What is Kathryn Kui-Lan Holder, M.D.'s NPI number?

Kathryn Kui-Lan Holder, M.D.'s National Provider Identifier (NPI) is 1962499392, issued on Sep 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn Kui-Lan Holder, M.D. located?

The NPPES record lists a practice address at 101 Bodin Cir, Fairfield, CA, 94535. Phone: (707) 423-3765. Providers update this record themselves, so call before visiting.

How can I verify Kathryn Kui-Lan Holder, M.D.'s license?

Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kathryn Kui-Lan Holder, M.D. prescribe under Medicare Part D?

In 2024, Kathryn Kui-Lan Holder, M.D. had 1,736 Medicare Part D claims for 307 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.

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.