2026 NPPES data Adult Health Nurse Practitioner NPI 1386901080 MSN, RN, APN, ANP-BC
Verify on CMS →

ROBERT HAMILTON, MSN, RN, APN, ANP-BC

Adult Health Nurse Practitioner in SOMERVILLE, New Jersey. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
658
Medicare Part D claims · 227 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.2K
39 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROBERT HAMILTON, MSN, RN, APN, ANP-BC filed 658 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in SOMERVILLE, New Jersey, prescribing 73% generic.

658
Part D claims, 2023
73%
generic prescribing
$1.2K
industry payments (Sunshine Act)

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.

ROBERT HAMILTON, MSN, RN, APN, ANP-BC's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

658 Top 31% higher than 69% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about ROBERT HAMILTON, MSN, RN, APN, ANP-BC?

Quality data not reported

NPI registry status

Active

Issued 04/19/2012

NPI 1386901080

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

658 45% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in New Jersey

How Adult Health Nurse Practitioner compares to other specialties among New Jersey providers

New Jersey providers

Adult Health Nurse Practitioner share within New Jersey

1. Adult Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Health Nurse Practitioner share within New Jersey

Specialty board-certification context

Estimated specialty board-certified rate — Adult Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Adult Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Health Nurse Practitioner) — ABMS / AOA estimate

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).

ROBERT HAMILTON, MSN, RN, APN, ANP-BC appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding MSN, RN, APN, ANP-BC credentials at 315 E MAIN ST, SOMERVILLE, NJ, 08876, with a listed phone of (908) 722-6900. NPI 1386901080 was issued on 04/19/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HAMILTON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 658 prescription claims written by this provider, covering 227 Medicare beneficiaries and totaling roughly $166K in drug spend, split 27% brand-name and 73% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

315 E MAIN ST
SOMERVILLE, NJ 08876

Provider Details

NPI 1386901080
Specialty Adult Health Nurse Practitioner
Credentials MSN, RN, APN, ANP-BC
Gender Male
NPI Issued 04/19/2012

Hospital and facility affiliations

Facilities where ROBERT HAMILTON, MSN, RN, APN, ANP-BC 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.

PRACTICE ASSOCIATES MEDICAL GROUP
MORRISTOWN, 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 ROBERT HAMILTON, MSN, RN, APN, ANP-BC. Source: openpaymentsdata.cms.gov.

Total received

$1.2K

Largest payer

INTUITIVE SURGICAL, INC.

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 · Above average

ROBERT HAMILTON, MSN, RN, APN, ANP-BC — brand share 27.0%
Specialty average (est.)

27% brand-name claims vs 73% generic, on 658 2023 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 2023.

658
Total Claims
$166K
Total Drug Cost
227
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,152
Total Day Supply
31,221
Brand vs Generic
27% brand / 73% generic
Brand Drug Cost
$130K
Generic Drug Cost
$35K
Antibiotic Claims
87

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
1.38
Gender Split
13% female / 87% male
Age Distribution
<65: 21, 65-74: 110, 75-84: 74, 85+: 22

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ROBERT HAMILTON, MSN, RN, APN, ANP-BC prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Xyosted
Testosterone Enanthate
156
Testosterone
89
Tamsulosin Hcl
59
Testosterone Enanthate
36
Testosterone Cypionate
31
Ciprofloxacin Hcl
27
Finasteride
20
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
19
Silodosin
16
Cefuroxime
Cefuroxime Axetil
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Adult Health Nurse Practitioner Overview

How ROBERT HAMILTON, MSN, RN, APN, ANP-BC fits within the Adult Health Nurse Practitioner landscape nationally.

29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider

ROBERT HAMILTON, MSN, RN, APN, ANP-BC's 658 claims are below the specialty average of 1,201.

Nearby Adult Health 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 HAMILTON.

Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT HAMILTON, MSN, RN, APN, ANP-BC's specialty?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC specializes in Adult Health Nurse Practitioner and practices in SOMERVILLE, New Jersey. Credentials: MSN, RN, APN, ANP-BC.
How much does ROBERT HAMILTON, MSN, RN, APN, ANP-BC prescribe under Medicare Part D?
In 2023, ROBERT HAMILTON, MSN, RN, APN, ANP-BC wrote 658 Medicare Part D claims totaling $166K in drug costs for 227 beneficiaries.
Where is ROBERT HAMILTON, MSN, RN, APN, ANP-BC located?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC is located at 315 E MAIN ST, SOMERVILLE, NJ, 08876. Phone: (908) 722-6900.
What is ROBERT HAMILTON, MSN, RN, APN, ANP-BC's NPI number?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC's National Provider Identifier (NPI) is 1386901080, issued on 04/19/2012.
Does ROBERT HAMILTON, MSN, RN, APN, ANP-BC prescribe more brand-name or generic drugs?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC's prescribing is 27% brand-name and 73% generic drugs by claim count, with $130K in brand drug costs.
How many Adult Health Nurse Practitioner providers are there in the US?
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does ROBERT HAMILTON, MSN, RN, APN, ANP-BC prescribe most often?
Based on 2023 Medicare Part D data, ROBERT HAMILTON, MSN, RN, APN, ANP-BC's most frequently prescribed drugs include Xyosted, Testosterone, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT HAMILTON, MSN, RN, APN, ANP-BC accept Medicare?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC appears in CMS Medicare data with 658 Part D claims and 227 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT HAMILTON, MSN, RN, APN, ANP-BC's credentials?
ROBERT HAMILTON, MSN, RN, APN, ANP-BC's NPI is 1386901080 with credentials MSN, RN, APN, ANP-BC. 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

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 (2023). 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 April 2026 (NPPES) / 2023 (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