What is Ann Ouyang's specialty?

Ann Ouyang (NPI 1104884238) is a Medicare-billing provider whose primary specialty is Gastroenterology in Hershey, PA.

Where does Ann Ouyang practice?

Ann Ouyang practices in Hershey, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1104884238.

How much does Medicare pay Ann Ouyang?

Ann Ouyang (NPI 1104884238) received approximately $10K in total Medicare Part B payments, serving 114 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1104884238

Ann OuyangMD

PRACTICETHE MILTON S HERSHEY MEDICAL CENTERSee all providers at this practice →

GastroenterologyHershey, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

138

Unique beneficiaries

—

Total services

139

Distinct HCPCS

Medicare payment

$6K

Peer benchmark

Total Medicare services vs. 771 Gastroenterology providers in PA — bottom quintile (cohort median 585).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

79.4

Quality

56.7

Cost

74.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.18%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 390256

Hospital

REFERRAL NETWORK

Where Ann Ouyang'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). 1 inbound referrers · 9 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NPI 1013915578	15	25

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
THE MILTON S HERSHEY MEDICAL CENTER	158	744
Hershey Endoscopy Center, Llc Ambulatory Surgical Center · Hershey, PA	28	59
Rekha Cherian Diagnostic Radiology · Hershey, PA	19	48
Deborah Bethards Gastroenterology · Hershey, PA	16	48
Zhaohai Yang Pathology · Philadelphia, PA	13	33
Kendra Yodfat Certified Registered Nurse Anesthetist (CRNA) · Harrisburg, PA	13	28
Negar Rassaei Pathology · Hershey, PA	13	24
Faisal Aziz Vascular Surgery · Hershey, PA	11	22
Christine Peterson Diagnostic Radiology · Saint Louis, MO	11	26

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