Andrew Ryan

Andrew Ryan

University of Michigan

H-index: 47

North America-United States

About Andrew Ryan

Andrew Ryan, With an exceptional h-index of 47 and a recent h-index of 37 (since 2020), a distinguished researcher at University of Michigan, specializes in the field of financial incentives, payment policy, quality of care.

His recent articles reflect a diverse array of research interests and contributions to the field:

Hospital Facility Prices Declined As A Result Of Oregon’s Hospital Payment Cap: Study examines hospital facility prices under Oregon’s payment cap

From Painkiller to Brain Thriller: The Curious Case of Fentanyl-induced Serotonin Syndrome

Hospital‐physician integration and clinical volume in traditional Medicare

Identifying Sources of Inter-hospital Variation in Episode Spending for Sepsis Care

The Rise and Risks of Medicare Advantage “Affinity Plans”

Heterogeneity within the Oregon Health Insurance Experiment: An application of causal forests

2025 Medicare Advantage Advance Notice: Small Changes, Missed Opportunities

Mortality and severe complications among newly graduated surgeons in the United States

Andrew Ryan Information

University

Position

UnitedHealth Professor of Health Policy and Management

Citations(all)

9651

Citations(since 2020)

5732

Cited By

6167

hIndex(all)

47

hIndex(since 2020)

37

i10Index(all)

124

i10Index(since 2020)

108

Email

University Profile Page

University of Michigan

Google Scholar

View Google Scholar Profile

Andrew Ryan Skills & Research Interests

financial incentives

payment policy

quality of care

Top articles of Andrew Ryan

Title

Journal

Author(s)

Publication Date

Hospital Facility Prices Declined As A Result Of Oregon’s Hospital Payment Cap: Study examines hospital facility prices under Oregon’s payment cap

Health Affairs

Roslyn C Murray

Zach Y Brown

Sarah Miller

Edward C Norton

Andrew M Ryan

2024/3/1

From Painkiller to Brain Thriller: The Curious Case of Fentanyl-induced Serotonin Syndrome

M Jones

A Ryan

C Haverkamp

M Broadwell

MA Wilson

2024/5

Hospital‐physician integration and clinical volume in traditional Medicare

Health Services Research

Brady Post

Brent K Hollenbeck

Edward C Norton

Andrew M Ryan

2024/2

Identifying Sources of Inter-hospital Variation in Episode Spending for Sepsis Care

Medical Care

Roshun Sankaran

Baris Gulseren

Hallie C Prescott

Kenneth M Langa

Thuy Nguyen

...

2024/4/16

The Rise and Risks of Medicare Advantage “Affinity Plans”

JAMA

Adam L Beckman

Andrew M Ryan

Jose F Figueroa

2024/4/16

Heterogeneity within the Oregon Health Insurance Experiment: An application of causal forests

Plos one

Zaid Hattab

Edel Doherty

Andrew M Ryan

Stephen O’Neill

2024/1/18

2025 Medicare Advantage Advance Notice: Small Changes, Missed Opportunities

Health Affairs Forefront

David J Meyers

Andrew M Ryan

Jared Perkins

Erin C Fuse Brown

2024/7/20

Mortality and severe complications among newly graduated surgeons in the United States

Annals of Surgery

Ryan A Howard

Angela E Thelen

Xilin Chen

Rebecca Gates

Andrew E Krumm

...

2023/10/13

Association Between the Medicare Advantage Quartile Adjustment System and Plan Behavior and Enrollment

JAMA Health Forum

Roslyn C Murray

David J Meyers

Erin C Fuse Brown

Travis C Williams

Andrew M Ryan

2024/1/5

Alternative Payment Models and Patient-Reported Quality of Preparation for Discharge: A Retrospective Longitudinal Study

Journal of Patient Experience

Sunny C Lin

Julia Adler-Milstein

John M Hollingsworth

Andrew Ryan

2024/3

Cold and Confused: A Case of Suspected Adrenal Insufficiency After COVID-19

A Ryan

M Jones

M Broadwell

2024/5

Evidence-based opioid prescribing guidelines and new persistent opioid use after surgery

Annals of Surgery

Ryan Howard

Andrew Ryan

Hsou Mei Hu

Craig S Brown

Jennifer Waljee

...

2023/8/1

Reconciliation payments in the Bundled Payments for Care Improvement Advanced program and reductions in clinical spending needed for CMS to avoid financial losses

JAMA

Andrew M Ryan

Sukruth A Shashikumar

Zoey Chopra

Karen E Joynt Maddox

Jason D Buxbaum

2023/4/11

Estimated fiscal effects of Medicare Advantage’s quartile payment system

JAMA Health Forum

Roslyn C Murray

David J Meyers

Erin C Fuse Brown

Andrew M Ryan

2023/12/1

Correction: Volume–outcome relationships for Roux-en-Y gastric bypass patients in the sleeve gastrectomy era

Surgical Endoscopy

Grace F Chao

Jie Yang

Jyothi Thumma

Karan R Chhabra

David E Arterburn

...

2023/3/1

Association of surgical resident competency ratings with patient outcomes

Academic Medicine

Daniel E Kendrick

Angela E Thelen

Xilin Chen

Tanvi Gupta

Kenji Yamazaki

...

2023/7/1

Legislative and regulatory options for improving Medicare Advantage

Journal of Health Politics, Policy and Law

Erin C Fuse Brown

Travis C Williams

Roslyn C Murray

David J Meyers

Andrew M Ryan

2023/12/1

Out-of-pocket costs for commercially-insured patients in the years following bariatric surgery: sleeve gastrectomy versus roux-en-Y gastric bypass

Urologic Oncology: Seminars and Original Investigations

Christopher JD Wallis

Daniel D Joyce

Zachary Klaassen

Amy N Luckenbaugh

Aaron A Laviana

...

2021/12/1

Comparative safety of sleeve gastrectomy and gastric bypass up to 5 years after surgery in patients with Medicaid

Annals of surgery

Ryan Howard

Jie Yang

Jyothi Thumma

Anne Ehlers

Sean O’Neill

...

2023/6/1

Evaluating educational outcomes using patient outcomes of new surgeons performing partial colectomy compared to cholecystectomy

Academic Medicine

Brian C George

Angela E Thelen

Ryan A Howard

Daniel E Kendrick

Xilin Chen

...

2023/11/1

See List of Professors in Andrew Ryan University(University of Michigan)