Maria Williams, FNP
NPI 1619446572 · Family Nurse Practitioner · Mahwah, NJ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Williams, FNP is a Family Nurse Practitioner provider in Mahwah, NJ (NPI 1619446572).
Provider details
- NPI number
- 1619446572
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 26NJ00839100 (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
672 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 188 | $88 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 122 | $124 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 68 | $9 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 68 | $56 |
| Automated Urinalysis Test81003 | 61 | $2 |
| Respiratory Infectious Agent Detection By Rna for Severe Acute Respiratory Syndrome Coronavirus 2 (covid 19), Influenza A, Influenza B, and Respiratory Syncytial Virus, Upper Respiratory Specimen, Each Reported As Detected Or Not Detected |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 34 | 33 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 29 | 26 |
| Atorvastatin Calcium | 22 | — |
| Rosuvastatin Calcium | 21 | — |
| Amlodipine Besylate | 17 | — |
| Cephalexin | 17 | 16 |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (1)
- 759 Hamburg TpkeWayne, NJ 07470-2077Phone: (973) 709-0099
Registry dates
- Enumerated
- 2018-11-20
- Last updated
- 2018-11-20
Frequently asked questions
- What is Maria Williams's NPI number?
- Maria Williams's National Provider Identifier (NPI) is 1619446572, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Williams's specialty?
- Maria Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Williams located?
- Maria Williams's practice location on file with NPPES is 1400 Macarthur Blvd, Mahwah, NJ 07430-3618.
- What is Maria Williams's phone number?
- The practice phone number listed in the NPPES registry for Maria Williams is (973) 706-0238.
- Does Maria Williams accept Medicare?
- Maria Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Williams's NPI active?
- Yes — Maria Williams's NPI (1619446572) is active in the NPPES registry as of the last update on 2018-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.