Danielle Williamson, PMHNP-BC
NPI 1821707233 · Psychiatric/Mental Health Nurse Practitioner · Hauppauge, NY
Danielle Williamson, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Hauppauge, NY (NPI 1821707233).
Provider details
- NPI number
- 1821707233
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- F404327-01 (NY)
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
3 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
- 2022-11-15
- Last updated
- 2026-01-04
- Certified
- 2026-01-04
Frequently asked questions
- What is Danielle Williamson's NPI number?
- Danielle Williamson's National Provider Identifier (NPI) is 1821707233, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Danielle Williamson's specialty?
- Danielle 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 Danielle Williamson located?
- Danielle Williamson's practice location on file with NPPES is 150 Motor Pkwy Ste 401, Hauppauge, NY 11788-5108.
- What is Danielle Williamson's phone number?
- The practice phone number listed in the NPPES registry for Danielle Williamson is (631) 885-1929.
- Is Danielle Williamson's NPI active?
- Yes — Danielle Williamson's NPI (1821707233) is active in the NPPES registry as of the last update on 2026-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.