NPPES file of Aug 9, 2026

Kathy Nguyen, FNP

Family Nurse Practitioner · Concord, CA

Kathy Nguyen, FNP is a family nurse practitioner with a practice address in Concord, California, and NPI 1700459583, issued on Jul 20, 2021. Check the license (California 95017788, 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
1700459583
Name
Kathy Nguyen
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95017788 CA
Self-reported in NPPES; status is on the state search
Practice location
2222 East St Ste 250, Concord, CA 94520
Phone
(925) 609-7220
Enumerated
Jul 20, 2021
Record last updated
Oct 26, 2025
Medicare enrollment
Enrolled (PECOS I20210810001285); 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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8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 2222 East St Ste 250

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

  1. Charles Chang, MDUrology Physician1942436886
  2. Jesse Le, M.D.Urology Physician1457679201
  3. Wei Zheng, M.D.Urology Physician1881601789

Verify Kathy Nguyen 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 95017788    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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20% more Medicare Part D claims than the average family nurse practitioner in 2024

1,569 Medicare Part D claims for 638 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 16 claims were for opioids.

  1. Kathy Nguyen1,569
  2. Specialty average1,305

Most prescribed

  1. Tamsulosin Hcl452 claims
  2. Estradiol178 claims
  3. Finasteride151 claims
  4. Gemtesa131 claims
  5. Ciprofloxacin Hcl61 claims
  6. Nitrofurantoin Mono-Macro59 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: $983.35

46 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kathy Nguyen$983.35
  2. Specialty average$650.95

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

Bills Medicare through one group practice

  1. John Muir Physician NetworkWalnut Creek, CA

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

Kathy Nguyen among 16,966 family nurse practitioner records in California

Kathy Nguyen, FNP is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 62% of them.

  • NPI issued2021 · 62% of these records are older, 32% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2021 · median 2019 among the 6,793 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

45 family nurse practitioner records list a practice address in Concord

They are 45 of the 9,328 NPPES records with a practice address in Concord, and 16,966 family nurse practitioner records in California.

All 16,966 in California → Every provider in Concord → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Melanie Anello, N.P.-CConcord, CA 945201225336696
  2. Kathleen Berriatua, FNP, CNSConcord, CA 945201689649295
  3. Rebecca Brook, FNP, RNConcord, CA 945201912189184
  4. Doris Campbell, FNP, MSNConcord, CA 945201275768012
  5. Carolin Delker, CNP, FAMILY MEDICINEConcord, CA 945201689081952
  6. Kristi Elliott, FNP-C, RNConcord, CA 945201972981835
  7. Elizabeth Ewing, NPConcord, CA 945201548678220
  8. Joanna HahnConcord, CA 945201669920815

Common questions

What is Kathy Nguyen, FNP's NPI number?

Kathy Nguyen, FNP's National Provider Identifier (NPI) is 1700459583, issued on Jul 20, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Kathy Nguyen, FNP located?

The NPPES record lists a practice address at 2222 East St Ste 250, Concord, CA, 94520. Phone: (925) 609-7220. Providers update this record themselves, so call before visiting.

How can I verify Kathy Nguyen, FNP's license?

NPPES lists California license number 95017788, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Kathy Nguyen, FNP prescribe under Medicare Part D?

In 2024, Kathy Nguyen, FNP had 1,569 Medicare Part D claims for 638 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.