Melissa Williamson
NPI 1801734611 · Psychiatric/Mental Health Nurse Practitioner · Butte, MT
Melissa Williamson is a Psychiatric/Mental Health Nurse Practitioner provider in Butte, MT (NPI 1801734611).
Provider details
- NPI number
- 1801734611
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- NUR-APRN-LIC-287031 (MT)
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
Under 1 yr in 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
- 2026-03-23
- Last updated
- 2026-03-23
- Certified
- 2026-03-23
Frequently asked questions
- What is Melissa Williamson's NPI number?
- Melissa Williamson's National Provider Identifier (NPI) is 1801734611, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Williamson's specialty?
- Melissa Williamson is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Melissa Williamson located?
- Melissa Williamson's practice location on file with NPPES is Po Box 4832, Butte, MT 59702-4832.
- What is Melissa Williamson's phone number?
- The practice phone number listed in the NPPES registry for Melissa Williamson is (406) 498-8311.
- Is Melissa Williamson's NPI active?
- Yes — Melissa Williamson's NPI (1801734611) is active in the NPPES registry as of the last update on 2026-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.