NPPES file of Aug 9, 2026

Mark Dewey Sifford, MD

Pulmonary Disease Physician · Jonesboro, AR

Mark Dewey Sifford, MD is a pulmonary disease physician with a practice address in Jonesboro, Arkansas, and NPI 1538155791, issued on Sep 23, 2005. Check the license (Arkansas C6883, 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
1538155791
Name
Mark Dewey Sifford
Credential
MD
Primary taxonomy
Pulmonary Disease Physician 207RP1001X
License number
C6883 AR
Self-reported in NPPES; status is on the state search
Practice location
300 Carson St, Jonesboro, AR 72401
Phone
(870) 932-1198
Enumerated
Sep 23, 2005
Record last updated
Apr 28, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(870) 910-7700
Medicaid ID
118834001 AR
Medicare enrollment
Enrolled (PECOS I20040331000493); accepts Medicare assignment
Medical or professional school
University Of Arkansas College Of Medicine, 1985
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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Also registered at 300 Carson St

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

  1. Duha Al-Smadi, MDStudent in an Organized Health Care Education/Training Program1366280364
  2. Fahiye Ali, MDInternal Medicine Physician1821790924
  3. Mohammad Alnabulsi, MDPulmonary Disease Physician1669953212
  4. Joshua Anyekase, MDStudent in an Organized Health Care Education/Training Program1255134516
  5. Kylie Arnold, CNPGerontology Nurse Practitioner1831603349
  6. Hadia ArzounStudent in an Organized Health Care Education/Training Program1184245037

Verify Mark Dewey Sifford in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArkansas State Medical Board
    Search for license C6883
    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

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2.5 times the Medicare Part D claims of the average pulmonary disease physician in 2024

3,622 Medicare Part D claims for 586 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims. 21 claims were for opioids.

  1. Mark Sifford3,622
  2. Specialty average1,425

Most prescribed

  1. Prednisone667 claims
  2. Albuterol Sulfate Hfa570 claims
  3. Montelukast Sodium479 claims
  4. Trelegy Ellipta320 claims
  5. Doxycycline Hyclate131 claims
  6. Breztri Aerosphere115 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: $7,408.91

114 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Sifford$7,408.91
  2. Specialty average$5,159.88

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

Bills Medicare through 2 group practices

  1. St Bernards Hospital Inc.Jonesboro, AR
  2. St Bernards Physician Clinics IncJonesboro, AR

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

Mark Dewey Sifford among 112 pulmonary disease physician records in Arkansas

Mark Dewey Sifford, MD is one of 112 pulmonary disease physician records with a practice address in Arkansas. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 90% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated1985 · median 2006 among the 87 with a school on file
  • Record last updated2008 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pulmonary Disease Physician providers in Arkansas

There are 112 pulmonary disease physician records in Arkansas.

The 8 pulmonary disease physician records with the nearest ZIP codes

  1. Mohammad Alnabulsi, MDJonesboro, AR 724011669953212
  2. Grant Cagle, MD MPHJonesboro, AR 724011053802306
  3. Jeffrey Cohen, MDJonesboro, AR 724011710973979
  4. Owen Criner, MDJonesboro, AR 724011790909943
  5. Katie Defore, MDJonesboro, AR 724011932220902
  6. William Hubbard, M.D.Jonesboro, AR 724011336118314
  7. Joshua Morrison, M.D.Jonesboro, AR 724011083848956
  8. John Thompson, M.D.Jonesboro, AR 724011871594663

Common questions

What is Mark Dewey Sifford, MD's NPI number?

Mark Dewey Sifford, MD's National Provider Identifier (NPI) is 1538155791, issued on Sep 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark Dewey Sifford, MD located?

The NPPES record lists a practice address at 300 Carson St, Jonesboro, AR, 72401. Phone: (870) 932-1198. Providers update this record themselves, so call before visiting.

How can I verify Mark Dewey Sifford, MD's license?

NPPES lists Arkansas license number C6883, 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 Dewey Sifford, MD prescribe under Medicare Part D?

In 2024, Mark Dewey Sifford, MD had 3,622 Medicare Part D claims for 586 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.

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.