NPI registry status
Active
2026 NPPES data Specialist NPI 1386728996 MD
Verify on CMS → Stephen Hennigan, MD
Specialist in Fayetteville, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 69,608 in Specialist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
1K
Medicare Part D claims · 189 beneficiaries · Specialist avg: 1K
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Industry payments
$965.12
41 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Stephen Hennigan, MD reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 1,436 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 1K
- Part D claims, 2023
- $965.12
- 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.
Stephen Hennigan, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% of 477,587 scored providers
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
Where Stephen Hennigan, MD sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Stephen Hennigan, MD writes more Part D claims than 63% of them and scores higher on MIPS quality than 91% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one specialist peer from a representative sample of 60; the gold marker is Stephen Hennigan, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Stephen Hennigan, MD?
High performer (top quartile)Primary specialty
Specialist
Medicare Part D claims
1,436 3% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in Arkansas
How Specialist compares to other specialties among Arkansas providers
Medicare quality performance, MIPS
Stephen Hennigan, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) - 100/100 vs national avg 83.1
How MIPS and board certification work
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 Hennigan, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 4038 N REMINGTON DR STE 4, Fayetteville, AR, 72703, with a listed phone of (479) 444-6522. NPI 1386728996 was issued on 10/24/2006.
Medicare Part D records for calendar year 2023 show 1,436 prescription claims written by this provider, covering 189 Medicare beneficiaries and totaling roughly $1.4 million in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 100), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,608 enrolled providers across 55 states and an average of 1,474 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
Provider Details
| NPI | 1386728996 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/24/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
100
Quality
Reporting: Group practice
Hospital and facility affiliations
Facilities where Stephen Hennigan, MD 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.
Infectious Disease Specialists OF Northwest Arkansas
Fayetteville, AR
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 Stephen Hennigan, MD. Source: openpaymentsdata.cms.gov.
Total received
$965
Largest payer
Insmed, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,436
Total Claims
$1.4M
Total Drug Cost
189
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,595
- Total Day Supply
- 38,275
- Generic Drug Cost
- $211K
- Antibiotic Claims
- 651
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 2.35
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephen Hennigan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Biktarvy
Biktarvy
118 claims
- Ceftriaxone
Ceftriaxone
93 claims
- Cephalexin
Cephalexin
70 claims
- Cefazolin Sodium
Cefazolin Sodium
61 claims
- Doxycycline Hyclate
Doxycycline Hyclate
60 claims
- Daptomycin
Daptomycin
56 claims
- Descovy
Descovy
51 claims
- Penicillin V Potas…
Penicillin V Potassium
48 claims
| Drug | Claims |
|---|---|
| Biktarvy Bictegrav/Emtricit/Tenofov Ala | 118 |
| Ceftriaxone Ceftriaxone Sodium | 93 |
| Cephalexin | 70 |
| Cefazolin Sodium | 61 |
| Doxycycline Hyclate | 60 |
| Daptomycin | 56 |
| Descovy Emtricitabine/Tenofov Alafenam | 51 |
| Penicillin V Potassium | 48 |
| Juluca Dolutegravir/Rilpivirine | 36 |
| Azithromycin | 34 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Stephen Hennigan, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Stephen Hennigan, MD's 1,436 claims are below the specialty average of 1,474.
Nearby Specialist Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Hennigan.
Dr. Ali Abdelaal
MD
Harrison, AR
Dr. Alli Agee
BS
Little Rock, AR
Dr. Roger Alderson
MD
Cabot, AR
Dr. Jose Alemparte
M.D.
Fort Smith, AR
Leisa Alexander
Jonesboro, AR
Compare Specialist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Arkansas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
Step-by-step guide to choosing a provider
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Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Arkansas
Frequently Asked Questions
What is Stephen Hennigan, MD's specialty? ▼
Stephen Hennigan, MD specializes in Specialist and practices in Fayetteville, Arkansas. Credentials: MD.
How much does Stephen Hennigan, MD prescribe under Medicare Part D? ▼
In 2023, Stephen Hennigan, MD wrote 1,436 Medicare Part D claims totaling $1.4M in drug costs for 189 beneficiaries.
What is Stephen Hennigan, MD's Medicare quality score? ▼
Stephen Hennigan, MD has a CMS MIPS Final Score of 100/100 (Quality: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stephen Hennigan, MD located? ▼
Stephen Hennigan, MD is located at 4038 N REMINGTON DR STE 4, Fayetteville, AR, 72703. Phone: (479) 444-6522.
What is Stephen Hennigan, MD's NPI number? ▼
Stephen Hennigan, MD's National Provider Identifier (NPI) is 1386728996, issued on 10/24/2006.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Stephen Hennigan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephen Hennigan, MD's most frequently prescribed drugs include Biktarvy, Ceftriaxone, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephen Hennigan, MD accept Medicare? ▼
Stephen Hennigan, MD appears in CMS Medicare data with 1,436 Part D claims and 189 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Hennigan, MD's credentials? ▼
Stephen Hennigan, MD's NPI is 1386728996 with credentials MD. 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.