NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1649642166 APN
Verify on CMS → Barrington Williams, APN
Nurse Practitioner in Berkeley Heights, New Jersey.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 89,808 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
538
Medicare Part D claims · 381 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$124.98
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Barrington Williams, APN filed 538 Medicare Part D claims in 2024 as a Nurse Practitioner in Berkeley Heights, New Jersey, prescribing 90% generic.
- 538
- Part D claims, 2024
- 90%
- generic prescribing
- $124.98
- industry payments (Sunshine Act)
- ≥65th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Barrington Williams, APN
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1649642166), first enumerated 10/23/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 538 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$124.98 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1649642166 · Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1649642166
- ENUM-MID 2015
- TAX-MEGA 90K Nurse Practitioner
- RX-LIGHT 538
- BOOK-LIGHT 1,776 in New Jersey
- PHOTO-ENUM Lauryn Verstrate, NP · 2015
Barrington Williams, APN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
538 ≥ 65th percentile 65% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Barrington Williams, APN?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
538 53% vs specialty avg
Specialty distribution in New Jersey
How Nurse Practitioner compares to other specialties among New Jersey providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1649642166 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | APN |
| Gender | Male |
| NPI Issued | 10/23/2015 |
Hospital and facility affiliations
Facilities where Barrington Williams, APN bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Central Jersey Urgent Care
Somerset, NJ
Summit Medical Group PA
Berkeley Heights, NJ
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Barrington Williams, APN. Source: openpaymentsdata.cms.gov.
Total received
$125
Largest payer
GlaxoSmithKline, LLC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Barrington Williams, APN - brand share 8.0%
Nurse Practitioner average
8% brand-name claims vs 90% generic, on 538 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
538
Total Claims
$10K
Total Drug Cost
381
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 549.167
- Total Day Supply
- 6,043
- Brand vs Generic
- 8% brand / 90% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 205
Patient Demographics
- Average Patient Age
- 75.5 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 14, 65-74: 160, 75-84: 159, 85+: 48
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Barrington Williams, APN prescribes most
Top Medicare Part D drugs by claim count, 2024
- Methylprednisolone
Methylprednisolone
74 claims
- Doxycycline Hyclate
Doxycycline Hyclate
60 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
45 claims
- Cephalexin
Cephalexin
38 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
34 claims
- Fluticasone Propio… 27
Fluticasone Propionate
27 claims
- Paxlovid 27
Paxlovid
27 claims
- Nitrofurantoin Mon… 26
Nitrofurantoin Mono-Macro
26 claims
| Drug | Claims |
|---|---|
| Methylprednisolone | 74 |
| Doxycycline Hyclate | 60 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 45 |
| Cephalexin | 38 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 34 |
| Fluticasone Propionate | 27 |
| Paxlovid Nirmatrelvir/Ritonavir | 27 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 26 |
| Prednisone | 20 |
| Mupirocin | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Barrington Williams, APN fits within the Nurse Practitioner landscape nationally.
89,808
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,144
Avg Claims per Provider
Barrington Williams, APN's 538 claims are below the specialty average of 1,144.
Nationwide Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Williams, both outside New Jersey so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nurse Practitioner Providers in New Jersey
Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as Williams.
One of 1,776 Nurse Practitioner providers enrolled in New Jersey, 5 are shown here.
Grace Abad
MSN RN, ANP-BC
Somerville, NJ
Dr. Ria Charisma Abadinas
DNP, APN-C
Egg Harbor Township, NJ
Colleen Abell
C.R.N.P
Florham Park, NJ
Christine Ablett
APN-C
Northfield, NJ
Rosalyn Abraham
Union, NJ
Compare Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Barrington Williams, APN's specialty? ▼
Barrington Williams, APN specializes in Nurse Practitioner and practices in Berkeley Heights, New Jersey. Credentials: APN.
How much does Barrington Williams, APN prescribe under Medicare Part D? ▼
In 2024, Barrington Williams, APN wrote 538 Medicare Part D claims totaling $10K in drug costs for 381 beneficiaries.
Where is Barrington Williams, APN located? ▼
Barrington Williams, APN is located at 1 DIAMOND HILL RD, Berkeley Heights, NJ, 07922. Phone: (908) 277-8880.
What is Barrington Williams, APN's NPI number? ▼
Barrington Williams, APN's National Provider Identifier (NPI) is 1649642166, issued on 10/23/2015.
Does Barrington Williams, APN prescribe more brand-name or generic drugs? ▼
Barrington Williams, APN's prescribing is 8% brand-name and 90% generic drugs by claim count, with $4K in brand drug costs.
How many Nurse Practitioner providers are there in the US? ▼
There are 89,808 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,144 Medicare Part D claims per year.
What drugs does Barrington Williams, APN prescribe most often? ▼
Based on 2024 Medicare Part D data, Barrington Williams, APN's most frequently prescribed drugs include Methylprednisolone, Doxycycline Hyclate, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Barrington Williams, APN accept Medicare? ▼
Barrington Williams, APN appears in CMS Medicare data with 538 Part D claims and 381 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Barrington Williams, APN's credentials? ▼
Barrington Williams, APN's NPI is 1649642166 with credentials APN. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.