Melissa Williams, FNP
NPI 1275881633 · Family Nurse Practitioner · Rancho Cucamonga, CA
Melissa Williams, FNP is a Family Nurse Practitioner provider in Rancho Cucamonga, CA (NPI 1275881633).
Provider details
- NPI number
- 1275881633
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 21516 (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
13 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
- 2012-08-16
- Last updated
- 2018-10-03
Frequently asked questions
- What is Melissa Williams's NPI number?
- Melissa Williams's National Provider Identifier (NPI) is 1275881633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williams's specialty?
- Melissa Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Williams located?
- Melissa Williams's practice location on file with NPPES is 9190 Haven #102, Rancho Cucamonga, CA 91730-5413.
- What is Melissa Williams's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williams is (909) 980-9898.
- Is Melissa Williams's NPI active?
- Yes — Melissa Williams's NPI (1275881633) is active in the NPPES registry as of the last update on 2018-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.