Mariah Elizabeth Small-O'Sullivan, M.D.
Otolaryngology Physician · Hot Springs, AR
Mariah Elizabeth Small-O'Sullivan, M.D. is an otolaryngology physician with a practice address in Hot Springs, Arkansas, and NPI 1477085249, issued on Mar 31, 2017. Check the license (Arkansas E-15155, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mariah Elizabeth Small-O'Sullivan
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- E-15155 AR
Self-reported in NPPES; status is on the state search - Practice location
- 1 Mercy LN Ste 106, Hot Springs, AR 71913
- Phone
- (501) 609-2368
- Enumerated
- Mar 31, 2017
- Record last updated
- May 20, 2022
- Medicare enrollment
- Enrolled (PECOS I20220614001825); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 79 in Arkansas → Look up another NPI →
Verify Mariah Elizabeth Small-O'Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license E-15155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average otolaryngology physician in 2024
1,287 Medicare Part D claims for 390 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 162 claims were for opioids.
Most prescribed
- Azelastine Hcl201 claims
- Ipratropium Bromide127 claims
- Oxycodone Hcl124 claims
- Famotidine76 claims
- Nortriptyline Hcl76 claims
- Fluticasone Propionate75 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: $196.25
5 payments; by number, the most common kind was food and beverage; the largest payer was Aerin Medical Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Aspirus Rhinelander And Tomahawk Hospitals And Clinics, Inc.Rhinelander, WI
- Chi St Vincent Medical Group Hot SpringsHot Springs National Park, AR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariah Elizabeth Small-O'Sullivan among 79 otolaryngology physician records in Arkansas
Mariah Elizabeth Small-O'Sullivan, M.D. is one of 79 otolaryngology physician records with a practice address in Arkansas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 10% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2000 among the 50 with a school on file
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Arkansas
There are 79 otolaryngology physician records in Arkansas.
All 79 in Arkansas → Every provider in Hot Springs → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- James Griffin, MDHot Springs, AR 719131275540338
- Larry Linson, DOHot Springs, AR 719131164658571
- Jeffrey Miller, MDHot Springs, AR 719131528048923
- Robert Borg, M.D.Hot Springs, AR 719011376760215
- Eric Monte, MDHot Springs, AR 719011649387622
- Samuel Vallery, MDHot Springs, AR 719011033110556
- Michael McGhee, M.D.Bryant, AR 720191124001953
- Phillip Ballinger, M.D.Conway, AR 720341174571749
Common questions
What is Mariah Elizabeth Small-O'Sullivan, M.D.'s NPI number?
Mariah Elizabeth Small-O'Sullivan, M.D.'s National Provider Identifier (NPI) is 1477085249, issued on Mar 31, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Elizabeth Small-O'Sullivan, M.D. located?
The NPPES record lists a practice address at 1 Mercy LN Ste 106, Hot Springs, AR, 71913. Phone: (501) 609-2368. Providers update this record themselves, so call before visiting.
How can I verify Mariah Elizabeth Small-O'Sullivan, M.D.'s license?
NPPES lists Arkansas license number E-15155, 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 Mariah Elizabeth Small-O'Sullivan, M.D. prescribe under Medicare Part D?
In 2024, Mariah Elizabeth Small-O'Sullivan, M.D. had 1,287 Medicare Part D claims for 390 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.