Nancy Riley-Williams, FNP-BC
NPI 1790140945 · Family Nurse Practitioner · Green Valley, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Riley-Williams, FNP-BC is a Family Nurse Practitioner provider in Green Valley, AZ (NPI 1790140945).
Provider details
- NPI number
- 1790140945
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- AP8348 (AZ)
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
10 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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 57 | 31 |
| Atorvastatin Calcium | 49 | 27 |
| Lisinopril | 44 | 24 |
| Amlodipine Besylate | 40 | 22 |
| Hydrochlorothiazide | 37 | 17 |
| Simvastatin | 23 | 13 |
| Metformin Hcl | 21 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-12-15
- Last updated
- 2020-01-31
- Certified
- 2020-01-31
Frequently asked questions
- What is Nancy Riley-Williams's NPI number?
- Nancy Riley-Williams's National Provider Identifier (NPI) is 1790140945, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Riley-Williams's specialty?
- Nancy Riley-Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nancy Riley-Williams located?
- Nancy Riley-Williams's practice location on file with NPPES is 1260 S Campbell Ave Bldg 2, Green Valley, AZ 85614-0503.
- What is Nancy Riley-Williams's phone number?
- The practice phone number listed in the NPPES registry for Nancy Riley-Williams is (520) 407-5600.
- Does Nancy Riley-Williams accept Medicare?
- Nancy Riley-Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Riley-Williams's NPI active?
- Yes — Nancy Riley-Williams's NPI (1790140945) is active in the NPPES registry as of the last update on 2020-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.