What is Ann Gillenwater's specialty?

Ann Gillenwater (NPI 1548354350) is a Medicare-billing provider whose primary specialty is Otolaryngology in Houston, TX.

Where does Ann Gillenwater practice?

Ann Gillenwater practices in Houston, TX, based on the location reported in the CMS Medicare provider datasets for NPI 1548354350.

How much does Medicare pay Ann Gillenwater?

Ann Gillenwater (NPI 1548354350) received approximately $44K in total Medicare Part B payments, serving 206 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1548354350

Ann GillenwaterM.D.

PRACTICEMDACCSee all providers at this practice →

OtolaryngologyHouston, TXI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

245

Unique beneficiaries

—

Total services

277

Distinct HCPCS

Medicare payment

$15K

Peer benchmark

Total Medicare services vs. 668 Otolaryngology providers in TX — bottom quintile (cohort median 967).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$258

Distinct drugs

Brand share

100.0%

Top prescribed drugs

Hydrocodone/Acetaminophen11 claims

QUALITY · MIPS · 2024

Final MIPS score

84.3

Quality

70.8

Cost

67.6

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.39%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Ann Gillenwater's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 24 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
UNIVERSITY OF TEXAS M. D. ANDERSON CANCER CENTER	304	3,361
Lawrence Ginsberg Diagnostic Radiology · Houston, TX	40	96
Theresa Hofstede Oral Surgery (Dentist only) · Houston, TX	38	301
Adel El-Naggar Pathology · Houston, TX	30	110
Jeremy Erasmus Diagnostic Radiology · Houston, TX	23	60
Kaveh Karimzad Cardiology · Houston, TX	22	136
Komal Shah Diagnostic Radiology · Houston, TX	22	48
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Houston, TX	19	40
Jane Onufer Diagnostic Radiology · Houston, TX	18	42
Girish Shroff Diagnostic Radiology · Houston, TX	16	54
James Debnam Diagnostic Radiology · Houston, TX	16	42
RODRIGUEZ, JESSICA	15	21

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events