2026 NPPES data Family Medicine Physician NPI 1225014871 DO
Verify on CMS →

STEPHEN DUGGAN, DO

Family Medicine Physician in MIDDLETOWN, 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
6K
Medicare Part D claims · 540 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

STEPHEN DUGGAN, DO filed 6,289 Medicare Part D claims in 2023 as a Family Medicine Physician in MIDDLETOWN, Delaware, prescribing 92% generic.

6K
Part D claims, 2023
92%
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.

STEPHEN DUGGAN, DO's Medicare Part D volume vs every U.S. prescriber

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

6,289 Top 5% higher than 95% 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)

STEPHEN DUGGAN, DO 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 STEPHEN DUGGAN, DO?

Quality data not reported

NPI registry status

Active

Issued 12/15/2005

NPI 1225014871

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

6,289 84% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Delaware

How Family Medicine Physician compares to other specialties among Delaware providers

Delaware providers

Family Medicine Physician share within Delaware

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Family 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).

STEPHEN DUGGAN, DO appears in the CMS NPPES registry as a Family Medicine Physician provider holding DO credentials at 124 SLEEPY HOLLOW DR, MIDDLETOWN, DE, 19709, with a listed phone of (302) 449-3030. NPI 1225014871 was issued on 12/15/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUGGAN 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 6,289 prescription claims written by this provider, covering 540 Medicare beneficiaries and totaling roughly $380K in drug spend, split 8% brand-name and 92% generic by claim count, with an opioid prescribing rate of 0.9%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

124 SLEEPY HOLLOW DR
MIDDLETOWN, DE 19709

Provider Details

NPI 1225014871
Specialty Family Medicine Physician
Credentials DO
Gender Male
NPI Issued 12/15/2005

Hospital and facility affiliations

Facilities where STEPHEN DUGGAN, DO 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.

CHRISTIANA CARE HEALTH SERVICES INC
HOCKESSIN, 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).

Brand vs generic prescribing mix · Generic-heavy

STEPHEN DUGGAN, DO — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 6,289 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.

6,289
Total Claims
$380K
Total Drug Cost
540
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,674
Total Day Supply
461,521
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$268K
Generic Drug Cost
$111K
Opioid Claims
56 (0.9% rate)
Antibiotic Claims
110

Patient Demographics

Average Patient Age
73.1 years
Avg HCC Risk Score
1.06
Gender Split
47% female / 53% male
Age Distribution
<65: 46, 65-74: 266, 75-84: 166, 85+: 62

Top Prescribed Drugs (Medicare Part D)

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

What STEPHEN DUGGAN, DO 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
524
Amlodipine Besylate
375
Lisinopril
358
Losartan Potassium
292
Omeprazole
264
Rosuvastatin Calcium
234
Levothyroxine Sodium
226
Gabapentin
165
Simvastatin
132
Metformin Hcl Er
Metformin Hcl
129

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

Family Medicine Physician Overview

How STEPHEN DUGGAN, DO fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

STEPHEN DUGGAN, DO's 6,289 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Delaware

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

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

Frequently Asked Questions

What is STEPHEN DUGGAN, DO's specialty?
STEPHEN DUGGAN, DO specializes in Family Medicine Physician and practices in MIDDLETOWN, Delaware. Credentials: DO.
How much does STEPHEN DUGGAN, DO prescribe under Medicare Part D?
In 2023, STEPHEN DUGGAN, DO wrote 6,289 Medicare Part D claims totaling $380K in drug costs for 540 beneficiaries.
Where is STEPHEN DUGGAN, DO located?
STEPHEN DUGGAN, DO is located at 124 SLEEPY HOLLOW DR, MIDDLETOWN, DE, 19709. Phone: (302) 449-3030.
What is STEPHEN DUGGAN, DO's NPI number?
STEPHEN DUGGAN, DO's National Provider Identifier (NPI) is 1225014871, issued on 12/15/2005.
Does STEPHEN DUGGAN, DO prescribe more brand-name or generic drugs?
STEPHEN DUGGAN, DO's prescribing is 8% brand-name and 92% generic drugs by claim count, with $268K in brand drug costs.
Does STEPHEN DUGGAN, DO prescribe opioids?
Yes, STEPHEN DUGGAN, DO had 56 opioid claims in 2023 with an opioid prescribing rate of 0.9%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does STEPHEN DUGGAN, DO prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN DUGGAN, DO's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN DUGGAN, DO accept Medicare?
STEPHEN DUGGAN, DO appears in CMS Medicare data with 6,289 Part D claims and 540 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN DUGGAN, DO's credentials?
STEPHEN DUGGAN, DO's NPI is 1225014871 with credentials DO. 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