Lacy Nasseh, FNP
NPI 1255054631 · Family Nurse Practitioner · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lacy Nasseh, FNP is a Family Nurse Practitioner provider in Walnut Creek, CA (NPI 1255054631).
Provider details
- NPI number
- 1255054631
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95120763 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 67 | 34 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | — |
| Vibegronbrand: Gemtesa | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-09-21
- Last updated
- 2025-03-03
- Certified
- 2025-03-03
Frequently asked questions
- What is Lacy Nasseh's NPI number?
- Lacy Nasseh's National Provider Identifier (NPI) is 1255054631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lacy Nasseh's specialty?
- Lacy Nasseh is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lacy Nasseh located?
- Lacy Nasseh's practice location on file with NPPES is 2255 Ygnacio Valley Rd Ste T35, Walnut Creek, CA 94598-3343.
- What is Lacy Nasseh's phone number?
- The practice phone number listed in the NPPES registry for Lacy Nasseh is (925) 681-9246.
- Does Lacy Nasseh accept Medicare?
- Lacy Nasseh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lacy Nasseh's NPI active?
- Yes — Lacy Nasseh's NPI (1255054631) is active in the NPPES registry as of the last update on 2025-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.