NPPES file of Aug 9, 2026

Mark Alan Horan, M.D.

Emergency Medicine Physician · Fort Smith, AR

Mark Alan Horan, M.D. is an emergency medicine physician with a practice address in Fort Smith, Arkansas, and NPI 1114989530, issued on Apr 3, 2006. Check the license (Arkansas C8520, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114989530
Name
Mark Alan Horan
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
C8520 AR
Self-reported in NPPES; status is on the state search
Practice location
1001 Towson Ave, Fort Smith, AR 72901
Phone
(479) 441-5011
Enumerated
Apr 3, 2006
Record last updated
Oct 10, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(405) 749-4561
Medicaid IDs
100029050A OK
124673001 AR
Medicare enrollment
Enrolled (PECOS I20081110000030); accepts Medicare assignment
Medical or professional school
University Of Texas Medical School At Houston, 1992
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest emergency medicine physician records → All 447 in Arkansas → Look up another NPI →

Also registered at 1001 Towson Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Saeem Akhtar, MDInternal Medicine Physician1619497435
  2. Fareeda Al Refai, M.D.Diagnostic Radiology Physician1497735047
  3. Mohammad Anower, M.DInternal Medicine Physician1942465919
  4. Amsa ArshadFamily Medicine Physician1467987875
  5. Aimee Arzoumanian, PAMedical Physician Assistant1114027059
  6. Matthew Bateman, CRNACertified Registered Nurse Anesthetist1407267859

Verify Mark Alan Horan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArkansas State Medical Board
    Search for license C8520    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arkansas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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55% more Medicare Part D claims than the average emergency medicine physician in 2024

351 Medicare Part D claims for 225 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 51 claims were for opioids.

  1. Mark Horan351
  2. Specialty average226

Most prescribed

  1. Tramadol Hcl39 claims
  2. Cephalexin37 claims
  3. Ondansetron Odt29 claims
  4. Prednisone22 claims
  5. Albuterol Sulfate Hfa15 claims
  6. Meloxicam15 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $23.21

1 payment: food and beverage; the largest payer was Abbott Laboratories. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Horan$23.21
  2. Specialty average$953.79

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Southeastern Emergency Physicians LLCFort Smith, AR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Alan Horan among 447 emergency medicine physician records in Arkansas

Mark Alan Horan, M.D. is one of 447 emergency medicine physician records with a practice address in Arkansas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 58% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated1992 · median 2011 among the 301 with a school on file
  • Record last updated2008 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

40 emergency medicine physician records list a practice address in Fort Smith

They are 40 of the 2,951 NPPES records with a practice address in Fort Smith, and 447 emergency medicine physician records in Arkansas.

All 447 in Arkansas → Every provider in Fort Smith → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Robert Fraser, M.D.Fort Smith, AR 729011932161353
  2. Michelle Horan, M.D.Fort Smith, AR 729011679535181
  3. Lee Johnson, MDFort Smith, AR 729011942262464
  4. Matthew Lamb, M.D.Fort Smith, AR 729011346582509
  5. Robert Lane, M.D.Fort Smith, AR 729011619938164
  6. Wallace Lock, M.D.Fort Smith, AR 729011437545761
  7. Jamie Maner, M.D.Fort Smith, AR 729011750464442
  8. Marshall Newcity, M.D.Fort Smith, AR 729011306808886

Common questions

What is Mark Alan Horan, M.D.'s NPI number?

Mark Alan Horan, M.D.'s National Provider Identifier (NPI) is 1114989530, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Alan Horan, M.D. located?

The NPPES record lists a practice address at 1001 Towson Ave, Fort Smith, AR, 72901. Phone: (479) 441-5011. Providers update this record themselves, so call before visiting.

How can I verify Mark Alan Horan, M.D.'s license?

NPPES lists Arkansas license number C8520, as entered by the provider. Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Mark Alan Horan, M.D. prescribe under Medicare Part D?

In 2024, Mark Alan Horan, M.D. had 351 Medicare Part D claims for 225 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.