10 medical group executives
Chief Operating Officer, Chief Information Officer and Co-Chief Executive Officer are among the current titles held by these ten medical group executives, at organizations including Hoag Medical Group, Summit Medical Group and Hill Physicians Medical Group. A reader can learn how medical group executives run their medical groups from people who have held the role.
Professionals to explore
Brooke Ball, MHA
LinkedInExperience: Chief Operating Officer · Southern California Permanente Medical Group
Brooke Ball has been Chief Operating Officer at Southern California Permanente Medical Group since November 2025, based in Los Angeles. At Kaiser Permanente, Brooke Ball was Chief Administrative Officer from 2023 to 2025, Assistant Medical Group Administrator from 2008 to 2023 and Director of Tertiary Services from 2006 to 2008.
Chris Parkinson, MBA
LinkedInExperience: Chief Information Officer · Hill Physicians Medical Group
Chris Parkinson has been Chief Information Officer at Hill Physicians Medical Group since April 2026, based in the San Francisco Bay Area. Chris Parkinson was Vice President, Information Technology (interim CIO) at Altais from 2020 to 2025 and Executive Director, Corporate Services at Kaiser Permanente from 2010 to 2019.
Christopher Herzog
LinkedInExperience: Chief Operating Officer - Atlantic Medical Group · Atlantic Health
Christopher Herzog has been Chief Operating Officer - Atlantic Medical Group at Atlantic Health since April 2019, based in Morristown, New Jersey, and was Chief Financial Officer- Atlantic Medical Group there from 2017 to 2019. Christopher Herzog was Vice President of Finance at Johns Hopkins Community Physicians from 2013 to 2017.
Chuck Bruce
LinkedInExperience: Chief Operating Officer Legacy Medical Group · Legacy Health
Chuck Bruce has been Chief Operating Officer Legacy Medical Group at Legacy Health since September 2023, based in Portland, Oregon, and also lists Director, Legacy Medical Group, Medical Specialties Division since 2014. Chuck Bruce was Manager of Graduate Medical Education at Legacy Health from 2011 to 2014 and Clinic Manager there from 2008 to 2011.
Craig Dreher
LinkedInExperience: EVP & Chief Information Officer · Community Care Physicians
Craig Dreher has been EVP & Chief Information Officer at Community Care Physicians since January 2018, based in Albany, New York, and was Chief Information and Operating Officer there from 2015 to 2018. Craig Dreher was VP and Regional Chief Information Officer at EMHS from 2012 to 2015 and Chief Information Officer at Walla Walla Clinic from 2006 to 2012.
Laren D Tan
LinkedInExperience: Chief Operating Officer · Loma Linda University Faculty Medical Group (LLUFMG)
Laren D Tan has been Chief Operating Officer at Loma Linda University Faculty Medical Group (LLUFMG) since December 2024 and Chief Operating Officer at Loma Linda University Health Care (LLUHC) since August 2026. Laren D Tan has been Chair of the Department of Medicine at Loma Linda University Health since 2022 and was LLUFMG, Medical Director of Creative Innovation, Communication and Branding (CICB) from 2020 to 2024.
Lynn Shorty BSN, CMPE
LinkedInExperience: Co-Chief Executive Officer · Eyecare Medical Group
Lynn Shorty has been Co-Chief Executive Officer at Eyecare Medical Group since July 2024, in a shared leadership model the profile describes, and was Chief Operating Officer there from 2019 to 2024, based in South Portland, Maine. Lynn Shorty was Director of Clinical Integration at Spectrum Medical Group from 2016 to 2019.
Martin Fee
LinkedInExperience: Chief Executive Officer · Hoag Medical Group
Martin Fee has been Chief Executive Officer at Hoag Medical Group since May 2022 and was its Chief Operating Officer from 2017 to 2022, based in Newport Beach, California. Martin Fee was Senior Vice President and Chief Clinical Officer at Hoag Health System from 2017 to 2022 and lists Infectious Disease Specialist at Martin J. Fee, MD since 1994.
Michael McCullough
LinkedInExperience: Chief Information Officer · Revo Healthcare, Twin Cities Orthopedics and i-Health
Michael McCullough has been Chief Information Officer at Revo Healthcare, Twin Cities Orthopedics and i-Health since March 2025, based in the Minneapolis-St. Paul area, and the profile says the organization owns and operates specialty medical practices and surgery centers. Michael McCullough was Chief Digital and Information Officer at NMDP from 2015 to 2024.
Rachael Britt-McGraw, CHCIO, CDH -E
LinkedInExperience: Chief Information Officer · Summit Medical Group
Rachael Britt-McGraw has been Chief Information Officer at Summit Medical Group since January 2021, based in Knoxville, Tennessee. Rachael Britt-McGraw was Chief Information Officer at Tennessee Orthopaedic Alliance from 2012 to 2020 and Director of System's Infrastructure and Operations at O'Charley's from 2001 to 2012.
Choose the right perspective
Pick the executive whose role, such as CEO, COO or CIO, and whose kind of medical group sit closest to the decision you face. Check the dates on each role to see how long each person has held it.
Questions to take into the conversation
- 01What did you focus on first when you took on your current role at the medical group, and why?
- 02How do you work with physician leaders when you make changes to how the practices run?
- 03Which measures do you review regularly to judge how the medical group is performing?
Reaching medical group executives
How can I contact one of these medical group executives?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 10 companies, including Southern California Permanente Medical Group, Hill Physicians Medical Group and Atlantic Health, based on profile data retrieved on October 22, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach medical group executives?
You choose the offer, starting at $5 per person. The offer is what the person receives, and Instant Expert's fee is added on top, so a $100 offer costs you $125. The fee is 20% of what you pay. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
Can an AI agent ask one of these medical group executives a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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