2026 NPPES data Physician Assistant NPI 1194719161 PA-C
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GREGORY SENDER, PA-C

Physician Assistant in MILFORD, Delaware. 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
707
Medicare Part D claims · 218 beneficiaries · Physician Assistant avg: 790
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$37.08
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GREGORY SENDER, PA-C filed 707 Medicare Part D claims in 2023 as a Physician Assistant in MILFORD, Delaware, prescribing 97% generic.

707
Part D claims, 2023
97%
generic prescribing
$37.08
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.

GREGORY SENDER, PA-C's Medicare Part D volume vs every U.S. prescriber

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

707 Top 29% higher than 71% 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 GREGORY SENDER, PA-C?

Quality data not reported

NPI registry status

Active

Issued 09/07/2005

NPI 1194719161

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

707 11% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Delaware

How Physician Assistant compares to other specialties among Delaware providers

Delaware providers

Physician Assistant share within Delaware

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

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — 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).

GREGORY SENDER, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 100 WELLNESS WAY, MILFORD, DE, 19963, with a listed phone of (302) 503-2300. NPI 1194719161 was issued on 09/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SENDER 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 707 prescription claims written by this provider, covering 218 Medicare beneficiaries and totaling roughly $6K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 48.8%. 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.

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

100 WELLNESS WAY
MILFORD, DE 19963

Provider Details

NPI 1194719161
Specialty Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 09/07/2005

Hospital and facility affiliations

Facilities where GREGORY SENDER, 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.

BAYHEALTH MEDICAL CENTER, INC
MILFORD, DE

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 GREGORY SENDER, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$37

Largest payer

Smith+Nephew, 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 · Generic-heavy

GREGORY SENDER, PA-C — brand share 3.0%
Specialty average (est.)

3% brand-name claims vs 97% generic, on 707 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.

707
Total Claims
$6K
Total Drug Cost
218
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
712
Total Day Supply
7,110
Brand vs Generic
3% brand / 97% generic
Brand Drug Cost
$2K
Generic Drug Cost
$4K
Opioid Claims
345 (48.8% rate)
Antibiotic Claims
104

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
0.99
Gender Split
66% female / 34% male
Age Distribution
<65: 17, 65-74: 116, 75-84: 73, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

What GREGORY SENDER, 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
192
Oxycodone Hcl
110
Ondansetron Hcl
109
Pantoprazole Sodium
51
Amoxicillin
45
Doxycycline Hyclate
34
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
27
Celecoxib
24
Diclofenac Sodium
23
Ciprofloxacin Hcl
15

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

Physician Assistant Overview

How GREGORY SENDER, 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

GREGORY SENDER, PA-C's 707 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Delaware

Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as SENDER.

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

Frequently Asked Questions

What is GREGORY SENDER, PA-C's specialty?
GREGORY SENDER, PA-C specializes in Physician Assistant and practices in MILFORD, Delaware. Credentials: PA-C.
How much does GREGORY SENDER, PA-C prescribe under Medicare Part D?
In 2023, GREGORY SENDER, PA-C wrote 707 Medicare Part D claims totaling $6K in drug costs for 218 beneficiaries.
Where is GREGORY SENDER, PA-C located?
GREGORY SENDER, PA-C is located at 100 WELLNESS WAY, MILFORD, DE, 19963. Phone: (302) 503-2300.
What is GREGORY SENDER, PA-C's NPI number?
GREGORY SENDER, PA-C's National Provider Identifier (NPI) is 1194719161, issued on 09/07/2005.
Does GREGORY SENDER, PA-C prescribe more brand-name or generic drugs?
GREGORY SENDER, PA-C's prescribing is 3% brand-name and 97% generic drugs by claim count, with $2K in brand drug costs.
Does GREGORY SENDER, PA-C prescribe opioids?
Yes, GREGORY SENDER, PA-C had 345 opioid claims in 2023 with an opioid prescribing rate of 48.8%.
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 GREGORY SENDER, PA-C prescribe most often?
Based on 2023 Medicare Part D data, GREGORY SENDER, PA-C's most frequently prescribed drugs include Tramadol Hcl, Oxycodone Hcl, Ondansetron Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY SENDER, PA-C accept Medicare?
GREGORY SENDER, PA-C appears in CMS Medicare data with 707 Part D claims and 218 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY SENDER, PA-C's credentials?
GREGORY SENDER, PA-C's NPI is 1194719161 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.
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