2026 NPPES data Physician Assistant NPI 1790754364 PA-C
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STACEY RILEY, PA-C

Physician Assistant in SOMERSWORTH, New Hampshire. 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
489
Medicare Part D claims · 144 beneficiaries · Physician Assistant avg: 790
MIPS score
63.8761/100
▼ 19 pts below national avg 83.1 · [object Object]
Industry payments
$54.39
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STACEY RILEY, PA-C reported a CMS MIPS final score of 63.8761/100 — below the 83.1 national average — and filed 489 Medicare Part D claims in 2023.

63.8761/100
MIPS score · -19 vs avg
489
Part D claims, 2023
$54.39
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.

STACEY RILEY, PA-C's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

64 6th percentile higher than 6% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). This entry sits in this band. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about STACEY RILEY, PA-C?

Below national average

NPI registry status

Active

Issued 03/16/2006

NPI 1790754364

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

489 38% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

63.8761/100 19.223899999999993% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in New Hampshire

How Physician Assistant compares to other specialties among New Hampshire providers

New Hampshire providers

Physician Assistant share within New Hampshire

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within New Hampshire

Medicare quality performance — MIPS

STACEY RILEY, PA-C's 2023 MIPS final score plotted against the Physician Assistant national average

Below national average
MIPS Final Score
63.8761/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 63.8761/100 vs national avg 83.1

0%100%National avg83%63.9%
MIPS final score (Physician Assistant) — 63.8761/100 vs national avg 83.1

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).

STACEY RILEY, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 7 MARSH BROOK DR STE 205, SOMERSWORTH, NH, 03878, with a listed phone of (603) 742-2007. NPI 1790754364 was issued on 03/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RILEY 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 489 prescription claims written by this provider, covering 144 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 39.7%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 63.8761/100 for the 2023 performance year (Quality 60.7067, Cost 31.9781), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

7 MARSH BROOK DR STE 205
SOMERSWORTH, NH 03878

Provider Details

NPI 1790754364
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 03/16/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

63.8761
Final Score
Avg: 83.1
60.7067
Quality
31.9781
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where STACEY RILEY, PA-C 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.

WENTWORTH DOUGLASS PHYSICIAN CORPORATION
LEE, NH

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 STACEY RILEY, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$54

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

489
Total Claims
$4K
Total Drug Cost
144
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
490
Total Day Supply
3,571
Generic Drug Cost
$3K
Opioid Claims
194 (39.7% rate)
Antibiotic Claims
86

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
0.89
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

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

What STACEY RILEY, PA-C 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
Tramadol Hcl
95
Ondansetron Odt
Ondansetron
80
Oxycodone Hcl
69
Dexamethasone
41
Doxycycline Hyclate
36
Cephalexin
23
Gabapentin
22
Mupirocin
19
Cefadroxil
18
Methocarbamol
16

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

Physician Assistant Overview

How STACEY RILEY, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

STACEY RILEY, PA-C's 489 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in New Hampshire

Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as RILEY.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is STACEY RILEY, PA-C's specialty?
STACEY RILEY, PA-C specializes in Physician Assistant and practices in SOMERSWORTH, New Hampshire. Credentials: PA-C.
How much does STACEY RILEY, PA-C prescribe under Medicare Part D?
In 2023, STACEY RILEY, PA-C wrote 489 Medicare Part D claims totaling $4K in drug costs for 144 beneficiaries.
What is STACEY RILEY, PA-C's Medicare quality score?
STACEY RILEY, PA-C has a CMS MIPS Final Score of 63.8761/100 (Quality: 60.7067, Cost: 31.9781). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STACEY RILEY, PA-C located?
STACEY RILEY, PA-C is located at 7 MARSH BROOK DR STE 205, SOMERSWORTH, NH, 03878. Phone: (603) 742-2007.
What is STACEY RILEY, PA-C's NPI number?
STACEY RILEY, PA-C's National Provider Identifier (NPI) is 1790754364, issued on 03/16/2006.
Does STACEY RILEY, PA-C prescribe opioids?
Yes, STACEY RILEY, PA-C had 194 opioid claims in 2023 with an opioid prescribing rate of 39.7%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does STACEY RILEY, PA-C prescribe most often?
Based on 2023 Medicare Part D data, STACEY RILEY, PA-C's most frequently prescribed drugs include Tramadol Hcl, Ondansetron Odt, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STACEY RILEY, PA-C accept Medicare?
STACEY RILEY, PA-C appears in CMS Medicare data with 489 Part D claims and 144 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STACEY RILEY, PA-C's credentials?
STACEY RILEY, PA-C's NPI is 1790754364 with credentials PA-C. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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