Mariann Harrington, M.D.
Hematology & Oncology Physician · Little Rock, AR
Mariann Harrington, M.D. is a hematology & oncology physician with a practice address in Little Rock, Arkansas, and NPI 1184606071, issued on Nov 16, 2005. Check the license (Arkansas C-5873, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mariann Harrington
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- C-5873 AR
Self-reported in NPPES; status is on the state search - Practice location
- 8901 Carti Way, Little Rock, AR 72205
- Phone
- (501) 219-8777
- Enumerated
- Nov 16, 2005
- Record last updated
- Mar 10, 2022
- Fax
- (501) 907-6522
- Medicaid ID
- 112182001 AR
- Medicare enrollment
- Enrolled (PECOS I20100503000178); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 1980
- Entity
- Type 1 · individual
Also registered at 8901 Carti Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shakeylla Allen, APRNAcute Care Nurse Practitioner1538528765
- Juan Barreto Andrade, MDSurgical Oncology Physician1932350683
- Jillian Bell, OTD, OTR/LOccupational Therapist1255003067
- Cynara Bennett, APRN-BCGerontology Nurse Practitioner1144861709
- William Betzner, PHARMDPharmacist1376154468
- Jacob Brady, MDOtolaryngology Physician1659875425
Verify Mariann Harrington in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license C-5873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.9 times the Medicare Part D claims of the average hematology & oncology physician in 2024
3,383 Medicare Part D claims for 430 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 160 claims were for opioids.
Most prescribed
- Letrozole611 claims
- Potassium Chloride201 claims
- Doxycycline Hyclate130 claims
- Eliquis122 claims
- Warfarin Sodium116 claims
- Ondansetron Hcl97 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Central Arkansas Radiation Therapy Institute IncLittle Rock, AR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in Arkansas
There are 103 hematology & oncology physician records in Arkansas.
Other hematology & oncology physician records in Arkansas
- Isam Abdel-Karim, M.D.Fort Smith, AR1639359714
- Ali Abdelaal, MDHarrison, AR1255344131
- Imran Ahmad, MDLittle Rock, AR1346472669
- Jibran Ahmed, M.DLittle Rock, AR1780091975
- Jamie Lee AldakkourMountain Home, AR1366070179
- Konstantinos Arnaoutakis, M.D.Little Rock, AR1053426304
- K'Anne Arthur, MDFayetteville, AR1144663923
- Varant Arzoumanian, MDFort Smith, AR1790904027
- Alan Baltz, MDLittle Rock, AR1407352040
- Brad Baltz, MDLittle Rock, AR1164484614
Common questions
What is Mariann Harrington, M.D.'s NPI number?
Mariann Harrington, M.D.'s National Provider Identifier (NPI) is 1184606071, issued on Nov 16, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mariann Harrington, M.D. located?
The NPPES record lists a practice address at 8901 Carti Way, Little Rock, AR, 72205. Phone: (501) 219-8777. Providers update this record themselves, so call before visiting.
How can I verify Mariann Harrington, M.D.'s license?
NPPES lists Arkansas license number C-5873, 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 Mariann Harrington, M.D. prescribe under Medicare Part D?
In 2024, Mariann Harrington, M.D. had 3,383 Medicare Part D claims for 430 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Mariann Harrington, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.