2026 NPPES data Emergency Medicine Physician NPI 1821062985 M.D.
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WILLIAM DEMPSEY, M.D.

Emergency Medicine Physician in SOUTH ABINGTON TOWNSHIP, Pennsylvania. 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
6K
Medicare Part D claims · 446 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$769.98
36 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

WILLIAM DEMPSEY, M.D. filed 6,336 Medicare Part D claims in 2023 as a Emergency Medicine Physician in SOUTH ABINGTON TOWNSHIP, Pennsylvania, prescribing 86% generic.

6K
Part D claims, 2023
86%
generic prescribing
Likely
board-certified (heuristic)

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.

WILLIAM DEMPSEY, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,336 Top 4% higher than 96% 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%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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

Board certification likely (heuristic — not verified)

WILLIAM DEMPSEY, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about WILLIAM DEMPSEY, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/15/2006

NPI 1821062985

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

6,336 1700% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Pennsylvania

How Emergency Medicine Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Emergency Medicine Physician share within Pennsylvania

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Pennsylvania

Specialty board-certification context

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

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

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

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

WILLIAM DEMPSEY, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 1145 NORTHERN BLVD, SOUTH ABINGTON TOWNSHIP, PA, 18411, with a listed phone of (570) 585-1300. NPI 1821062985 was issued on 02/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEMPSEY 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 6,336 prescription claims written by this provider, covering 446 Medicare beneficiaries and totaling roughly $605K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 3.3%. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

1145 NORTHERN BLVD
SOUTH ABINGTON TOWNSHIP, PA 18411

Provider Details

NPI 1821062985
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 02/15/2006

Hospital and facility affiliations

Facilities where WILLIAM DEMPSEY, M.D. 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.

THE WRIGHT CENTER MEDICAL GROUP
SOUTH ABINGTON TOWNSHIP, PA

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 WILLIAM DEMPSEY, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$770

Largest payer

Eisai 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.

License & disciplinary context — Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to WILLIAM DEMPSEY, M.D.. To verify WILLIAM DEMPSEY, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

WILLIAM DEMPSEY, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 6,336 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.

6,336
Total Claims
$605K
Total Drug Cost
446
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,466
Total Day Supply
298,862
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$510K
Generic Drug Cost
$91K
Opioid Claims
210 (3.3% rate)
Antibiotic Claims
136

Patient Demographics

Average Patient Age
68.9 years
Avg HCC Risk Score
1.21
Gender Split
50% female / 50% male
Age Distribution
<65: 116, 65-74: 196, 75-84: 103, 85+: 31

Top Prescribed Drugs (Medicare Part D)

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

What WILLIAM DEMPSEY, M.D. 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
Atorvastatin Calcium
425
Amlodipine Besylate
231
Levothyroxine Sodium
220
Lisinopril
217
Metformin Hcl
214
Omeprazole
170
Metoprolol Succinate
156
Simvastatin
150
Gabapentin
148
Pantoprazole Sodium
115

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

Emergency Medicine Physician Overview

How WILLIAM DEMPSEY, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

WILLIAM DEMPSEY, M.D.'s 6,336 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Pennsylvania

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WILLIAM DEMPSEY, M.D.'s specialty?
WILLIAM DEMPSEY, M.D. specializes in Emergency Medicine Physician and practices in SOUTH ABINGTON TOWNSHIP, Pennsylvania. Credentials: M.D..
How much does WILLIAM DEMPSEY, M.D. prescribe under Medicare Part D?
In 2023, WILLIAM DEMPSEY, M.D. wrote 6,336 Medicare Part D claims totaling $605K in drug costs for 446 beneficiaries.
Where is WILLIAM DEMPSEY, M.D. located?
WILLIAM DEMPSEY, M.D. is located at 1145 NORTHERN BLVD, SOUTH ABINGTON TOWNSHIP, PA, 18411. Phone: (570) 585-1300.
What is WILLIAM DEMPSEY, M.D.'s NPI number?
WILLIAM DEMPSEY, M.D.'s National Provider Identifier (NPI) is 1821062985, issued on 02/15/2006.
Does WILLIAM DEMPSEY, M.D. prescribe more brand-name or generic drugs?
WILLIAM DEMPSEY, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $510K in brand drug costs.
Does WILLIAM DEMPSEY, M.D. prescribe opioids?
Yes, WILLIAM DEMPSEY, M.D. had 210 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does WILLIAM DEMPSEY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, WILLIAM DEMPSEY, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILLIAM DEMPSEY, M.D. accept Medicare?
WILLIAM DEMPSEY, M.D. appears in CMS Medicare data with 6,336 Part D claims and 446 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILLIAM DEMPSEY, M.D.'s credentials?
WILLIAM DEMPSEY, M.D.'s NPI is 1821062985 with credentials M.D.. 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