Darlene Williams, MSN, NNP-BC
NPI 1437550555 · Neonatal Nurse Practitioner · Gilbert, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darlene Williams, MSN, NNP-BC is a Neonatal Nurse Practitioner provider in Gilbert, AZ (NPI 1437550555).
Provider details
- NPI number
- 1437550555
- Entity type
- Individual
- Primary specialty
- Neonatal Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, NNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 291205 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
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
11 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-09-08
- Last updated
- 2026-02-19
- Certified
- 2026-02-19
Frequently asked questions
- What is Darlene Williams's NPI number?
- Darlene Williams's National Provider Identifier (NPI) is 1437550555, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darlene Williams's specialty?
- Darlene Williams is listed in the NPPES registry with a primary specialty of Neonatal Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Darlene Williams located?
- Darlene Williams's practice location on file with NPPES is 1900 N Higley Rd, Gilbert, AZ 85234-1604.
- What is Darlene Williams's phone number?
- The practice phone number listed in the NPPES registry for Darlene Williams is (480) 543-2000.
- Does Darlene Williams accept Medicare?
- Darlene Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darlene Williams's NPI active?
- Yes — Darlene Williams's NPI (1437550555) is active in the NPPES registry as of the last update on 2026-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.