Irmarita Lewis, FNP
NPI 1669072328 · Family Nurse Practitioner · Fairfield, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irmarita Lewis, FNP is a Family Nurse Practitioner provider in Fairfield, CA (NPI 1669072328).
Provider details
- NPI number
- 1669072328
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Suppliers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 14 | 14 |
| Baclofen | 11 | — |
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
Additional practice locations (1)
- 1650 Los Gamos DrSan Rafael, CA 94903-1850Phone: (415) 444-2940
Registry dates
- Enumerated
- 2020-10-30
- Last updated
- 2026-06-04
- Certified
- 2026-06-04
Frequently asked questions
- What is Irmarita Lewis's NPI number?
- Irmarita Lewis's National Provider Identifier (NPI) is 1669072328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irmarita Lewis's specialty?
- Irmarita Lewis is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Irmarita Lewis located?
- Irmarita Lewis's practice location on file with NPPES is 1525 Webster St Ste D, Fairfield, CA 94533-4935.
- What is Irmarita Lewis's phone number?
- The practice phone number listed in the NPPES registry for Irmarita Lewis is (707) 470-2888.
- Does Irmarita Lewis accept Medicare?
- Irmarita Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irmarita Lewis's NPI active?
- Yes — Irmarita Lewis's NPI (1669072328) is active in the NPPES registry as of the last update on 2026-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.