NPPES file of Aug 9, 2026

Lacy Jay Nasseh, FNP

Family Nurse Practitioner · Walnut Creek, CA

Lacy Jay Nasseh, FNP is a family nurse practitioner with a practice address in Walnut Creek, California, and NPI 1255054631, issued on Sep 21, 2022. Check the license (California 95120763, 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
1255054631
Name
Lacy Jay Nasseh
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95120763 CA
Self-reported in NPPES; status is on the state search
Practice location
2255 Ygnacio Valley RD Ste T35, Walnut Creek, CA 94598
Phone
(925) 681-9246
Enumerated
Sep 21, 2022
Record last updated
Mar 3, 2025
Medicare enrollment
Enrolled (PECOS I20230427001747); accepts Medicare assignment
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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Verify Lacy Jay Nasseh 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 95120763
    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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90% fewer Medicare Part D claims than the average family nurse practitioner in 2024

126 Medicare Part D claims for 44 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Lacy Nasseh126
  2. Specialty average1,305

Most prescribed

  1. Estradiol67 claims
  2. Nitrofurantoin Mono-Macro16 claims
  3. Gemtesa12 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. Bass Medical GroupAlamo, CA

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

Lacy Jay Nasseh among 16,966 family nurse practitioner records in California

Lacy Jay Nasseh, 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 2022, is newer than 68% of them.

  • NPI issued2022 · 68% of these records are older, 25% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2020 · 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).

107 family nurse practitioner records list a practice address in Walnut Creek

They are 107 of the 6,170 NPPES records with a practice address in Walnut Creek, and 16,966 family nurse practitioner records in California.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Cheri Arbizu, MSN, FNPWalnut Creek, CA 945981205922630
  2. Shellie Campos, NPWalnut Creek, CA 945981982871331
  3. Melanie Charles, N.P.Walnut Creek, CA 945981972792950
  4. Ronald Connolly, FNPWalnut Creek, CA 945981710296116
  5. Janice Dolan, MSN/FNPWalnut Creek, CA 945981982680864
  6. Martha Eppenberger, FNPWalnut Creek, CA 945981710284096
  7. Sylvia Esperanza, NPWalnut Creek, CA 945981104067297
  8. Shawna Joaquin, NP-CWalnut Creek, CA 945981942436811

Common questions

What is Lacy Jay Nasseh, FNP's NPI number?

Lacy Jay Nasseh, FNP's National Provider Identifier (NPI) is 1255054631, issued on Sep 21, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Lacy Jay Nasseh, FNP located?

The NPPES record lists a practice address at 2255 Ygnacio Valley RD Ste T35, Walnut Creek, CA, 94598. Phone: (925) 681-9246. Providers update this record themselves, so call before visiting.

How can I verify Lacy Jay Nasseh, FNP's license?

NPPES lists California license number 95120763, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Lacy Jay Nasseh, FNP prescribe under Medicare Part D?

In 2024, Lacy Jay Nasseh, FNP had 126 Medicare Part D claims for 44 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.

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.