MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) – Otolaryngology Physician, NPI 1477085249

MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) is a healthcare provider. based in Hot springs, Arkansas. specializing in OTOLARYNGOLOGY. They hold the professional credentials M.D.. They hold a License No. E-15155 (AR). The NPI Number for MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) is 1477085249

Main info

Female
9 Years Of Experience
Accepts Medicare Assignment
Name
MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)
NPI
1477085249
Phone
(501) 609-2368
Address
1 MERCY LN STE 106
Enumeration Date
31 March 2017
Last Update Date
20 May 2022

Doctor Profile

Medical School Name
UNIVERSITY OF ARKANSAS COLLEGE OF MEDICINE
Secondary Phone
7153612000
Graduation Year
2017 (9 years ago)
PAC ID
4486923760
Group Practice PAC ID
9335059856
Professional Enrollment ID
I20260203000832
Address ID
WI545016710RH2251XDRXX402
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience47
Completeness75
Years active:9State licenses:1Digital endpointsOther names

103 OTOLARYNGOLOGY in AR

Provider Addresses for MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)

  • 1 MERCY LN STE 106

    HOT SPRINGS, AR 719136408

    Phone: (501) 609-2368

    Type: Location

  • 543, West Markham Street, Little Rock, Pulaski County, Arkansas, 72201, United States

    LITTLE ROCK, AR 722057101

    Phone: (501) 603-1214

    Type: Mailing

  • PO BOX 21850

    HOT SPRINGS, AR 719031850

    Phone: (501) 609-2368

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 13 Open Payments records for all available years, with a total value of $391.

Total Amount is formed as General ($391) + Research ($0) + Ownership ($0) = $391.

Last reported payment date: 2024-10-28 • Largest payer in this snapshot: Inspire Medical Systems, Inc. ($188).

Total Amount

$391

General + Research + Ownership

Payments

13

Total payment records

General Amount

$391

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-10-28

Latest reported date

Top Companies

Largest payers in this snapshot

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2026-02-03

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20220614001825IOtolaryngologyARTBD
I20260203000832IOtolaryngologyWITBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99213Established patient office or other outpatient visit, 20-29 minutes153119$0
99204New patient office or other outpatient visit, 45-59 minutes140140$0
99203New patient office or other outpatient visit, 30-44 minutes116116$0
31575Diagnostic exam of voice box using a flexible endoscope9778$0
99212Established patient office or other outpatient visit, 10-19 minutes5346$0
View full utilization report →

Insurance plans in this area (ZIP 71913)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 9335059856View full group profile
NameSpecialtyState
Family PracticeWI
Nurse PractitionerWI
-WI
Internal Medicine, Infectious DiseaseNY
-WI
Family PracticeWI
Nurse PractitionerWV
Internal MedicineWI
Nurse PractitionerIL
-WI

Reviews

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Frequently asked questions

What is MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)'s NPI number?
MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)'s NPI is 1477085249 — the number used across U.S. healthcare to identify this provider.
Is MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) still an active registrant?
MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) carries an active NPI according to the public dataset.
What clinical focus is listed for MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)?
At a glance, MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) is tied to Otolaryngology Physician. Clinical services aligned with this taxonomy classification.
What practice footprint exists for MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.)?
Travel planning: use Hot Springs, Arkansas as the reference point for MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.), then confirm.
Does MARIAH ELIZABETH SMALL-O'SULLIVAN (M.D.) accept insurance?
Insurance participation is not part of the core NPI extract — call the plan or office to confirm.

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