Sandy Williams, APN
NPI 1427530658 · Psychiatric/Mental Health Nurse Practitioner · Somerville, NJ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sandy Williams, APN is a Psychiatric/Mental Health Nurse Practitioner provider in Somerville, NJ (NPI 1427530658).
Provider details
- NPI number
- 1427530658
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APN
- Sex
- Female
- Sole proprietor
- No
- License
- 26NJ01375600 (NJ)
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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
47 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 47 | $68 |
Typical Medicare-allowed amounts for these services range $68–$68 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 671 Hoes Ln WPiscataway, NJ 08854-8021Phone: (732) 235-3266
Registry dates
- Enumerated
- 2018-09-04
- Last updated
- 2024-05-23
- Certified
- 2024-05-23
Frequently asked questions
- What is Sandy Williams's NPI number?
- Sandy Williams's National Provider Identifier (NPI) is 1427530658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandy Williams's specialty?
- Sandy Williams is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sandy Williams located?
- Sandy Williams's practice location on file with NPPES is 110 Rehill Ave, Somerville, NJ 08876-8021.
- What is Sandy Williams's phone number?
- The practice phone number listed in the NPPES registry for Sandy Williams is (908) 685-2200.
- Does Sandy Williams accept Medicare?
- Sandy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sandy Williams's NPI active?
- Yes — Sandy Williams's NPI (1427530658) is active in the NPPES registry as of the last update on 2024-05-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.