Position: Staff physician

Joined UHS: 2017

Medical Interests: Primary care and family medicine; addiction medicine; women’s health; transgender health; eating disorders.

Education: D.O., University of New England College of Osteopathic Medicine, Biddeford, Maine; B.A., Swarthmore College, Swarthmore, Pa.; residency with concentration in women’s health, Swedish Family Medicine at Cherry Hill, Seattle, Wash.; ecology and conservation studies, School for International Training, Madagascar

Professional Background: Family physician, Martin’s Point Health Care, Portland, Maine; volunteer medical director, Day One adolescent substance abuse and mental health treatment program, Maine; family physician, Holyoke Health Center, Holyoke, Mass.; senior family assessment worker, Ulster County Healthy Start, Kingston, N.Y.

Memberships and Certifications: Board certified, American Board of Family Medicine; certified buprenorphine prescriber, American Osteopathic Academy of Addiction Medicine; certified in colposcopy, American Society for Colposcopy and Cervical Pathology

Professional Affiliations and Honors: Member, American Academy of Family Physicians; member, American Society of Addiction Medicine. Recipient of the Sauter Award for Graduate with Distinction, University of New England College of Osteopathic Medicine; recipient, National Health Service Corps scholarship

More About Me: I’ve volunteered and worked on organic farms and educational wooden sailboats. I love to cook and bake, and enjoy spending time outdoors with my family.

Leora Cohen-McKeon, DO
Leora Cohen-McKeon, DO

Position: Family nurse practitioner

Joined UHS: 2011

Medical interests: Primary care, family medicine, sexual health, family planning

Education: M.S.N., Johns Hopkins University, Baltimore, Md.; B.S.N., Johns Hopkins University; B.A., Miami University, Oxford, Ohio

Professional background: Manager of clinical services and family planning provider, Harford County Health Department, Bel Air, Md.; instructor, Johns Hopkins University School of Nursing, Baltimore, Md.; nurse practitioner, Johns Hopkins Center for Addiction

Memberships and certifications: Certified, American Nurses Credentialing Center (ANCC); member, Sigma Theta Tau honor society of nursing

More about me: I enjoy hiking, skiing, ice skating, being outside with my family, cooking and knitting.

Jessica Conrad
Jessica Conrad
  • Joined UHS: 2010
  • Position: Staff physician
  • Clinical Interests: Family, emergency, inpatient and hospitalist practice; clinical instruction; research
  • Education: M.D., University of Miami School of Medicine, Miami, FL; B.S., University of Florida College of Arts and Sciences, Gainesville, FL
  • Postgraduate Training: Duluth Family Practice Residency Program, Duluth, Minn.; St. Margaret Hospital, Pittsburgh, PA.
  • Professional Background: Dr. Corey is board certified in family practice and has more than 27 years of experience in a variety of clinical settings. Prior to joining UHS, he was a member of the hospitalist program at Cooley Dickinson Hospital in Northampton, Mass.; his background also includes work in emergency, family and inpatient medicine, and as a clinical instructor for programs in California, Florida, Pennsylvania and Vermont. He is a published author, researcher and presenter, and inventor of a patented device which recaps hypodermic needles.
  • Certifications and Memberships: American Board of Family Physicians; American Academy of Family Physicians 
George A. Corey, MD in white coat, black shirt, blue tie and glasses
George A. Corey, MD in white coat, black shirt, blue tie and glasses

Position: Physician Assistant

Joined UHS: 2023


Samuel Merritt University, Master of Physician Assistant Program, Oakland, CA

University of Massachusetts, BA, Classics, Amherst, MA

Professional Background: Hartford Hospital, Emergency Medicine.

More About Me: I enjoy reading, travelling, and hiking with my dog.

Joshua Creaser
Joshua Creaser

Position: Women’s health nurse practitioner

Joined UHS: 2016

Medical interests: Women’s health, family planning, sexual health

Education: M.S.N., women’s health nurse practitioner program, University of Cincinnati, Cincinnati, Ohio; B.S., nursing, American International College, Springfield, Mass.

Professional background: Nurse practitioner, Baystate Wesson Women's Clinic, Springfield, Mass.; registered nurse, Baystate Wesson Women's Group, Springfield, Mass.; registered nurse, Planned Parenthood League of Massachusetts, Springfield, Mass.; registered nurse, St. John Lutheran Ministries, Billings, Mont.

Certifications: Board certified women's health care nurse practitioner, National Certificate Corporation (NCC); member, Association of Women's Health, Obstetric and Neonatal Nurses

More about me: I enjoy running (I hope to run in a marathon someday), hiking, singing (especially karaoke), and spending time with my husband and son. I am fluent in Spanish. 

Laisa-Sheili Cuevas
Laisa-Sheili Cuevas
  • Position: Family Nurse Practitioner
  • Medical Interests: Family practice, women's health, preventative care, health education, pediatrics
  • Education: Doctor of Nursing Practice, Elms College; Bachelor of Science, Anna Maria College; Associate of Science, Mount Wachusett Community College
  • Professional Background: Family Nurse Practitioner at Valley Medical Group; Nurse Case Manager at LifePath; Nurse at Charlene Manor Extended Care Facility
  • More About Me: I enjoy traveling, hiking, and spending time with family and friends.
Kaytlin David
Kaytlin David
  • Position: Staff physician
  • Joined UHS: 2013
  • Medical interests: Women's health, addiction care, domestic violence prevention, health education, physical therapy.
  • Education: M.D., University of Massachusetts Medical School, Worcester, Mass.; residency, Worcester Family Medicine residency program, Barre, Mass.; certificate in physical therapy, Hunter College, City University of New York; B.S., University of Massachusetts, Amherst, Mass.
  • Professional Background: Staff physician, Hilltown Community Health Centers, Huntington and Worthington, Mass.; physician, Clean Slate Centers for Addiction Treatment, Greenfield, Mass., and Spectrum Health Systems methadone clinic, Pittsfield, Mass.; physical therapist, University Health Services, University of Massachusetts, Amherst, Mass.
  • Certifications and Memberships: Certified, American Board of Family Medicine; member, American Academy of Family Physicians and American Medical Association.
  • More About Me: I have two children, enjoy dancing, learning Italian and traveling. 
Maria Gallo
Maria Gallo
  • Position: Staff physician
  • Joined UHS: 2021
  • Medical Interests: Internal medicine, pediatrics
  • Education: Technische Universität München, Fakultät für Medizin; Cook County Health, John H. Stroger Jr. Hospital residency in internal medicine and pediatrics
  • Professional Background: Holyoke Health Center; Chicago City Department of Public Health; St. Anthony Hospital, Chicago; Union Health Service, Chicago; UI Health, University of Illinois in Chicago Hospital Health Sciences System, UIC Medical Center
  • Memberships and Certifications: Board certified, American Board of Pediatrics, American Board of Internal Medicine
  • More about Me: I practice in Spanish and German in addition to English.
Douglas Hinckley
Douglas Hinckley

Position: Nurse Practitioner

Joined UHS: 2008

Medical Interests: Extensive experience with diabetes; women's health, burns, transplants. Faculty sponsor and medical liaison to the College Diabetes Network at UMass Amherst: collegediabetesnetwork.org 

Education: M.S., adult ambulatory care nurse practitioner program, University of Massachusetts Graduate School of Nursing, Worcester, MA; B.S. magna cum laude, nursing, Worcester State College, Worcester; A.S., nursing, Quinsigamond Community College, Worcester

Professional Background: Nurse practitioner, Brattleboro Retreat, Brattleboro, VT; acute care nurse practitioner, Acton Medical Associates, Acton, MA; nurse practitioner, Tapestry Health Systems, Northampton, MA; Nurse practitioner, women's ambulatory services, Hartford Hospital, Hartford, CT

Certifications: Certified Adult Nurse Practitioner and Gerontological Nurse Practitioner; member, Sigma Theta Tau International Honor Society and Nightingale Honor Society

Memberships: Physicians Committee for Responsible Medicine; Best Friends Animal Society; Farm Sanctuary; International Fund for Animal Welfare

More About Me: I'm a percussionist/drummer with the bands Lucky Soul, Shanta Paloma Band, Elliot Steger Quartet, and Carolyn Walker and Emergence Theory. I enjoy hiking, photography and organic cooking.

Christine Horn
Christine Horn

Position: Director of Athletic Medicine, Team Physician

Joined UHS: 2018

Medical Interests: Sports medicine, family medicine

Education: Undergrad: Pennsylvania State University; Medical School: West Virginia School of Osteopathic Medicine

Memberships & Certifications: Member of AAFP, ABFM, AMSSM, ACSM

More About Me: I'm happy to be back in Massachusetts, where I grew up. I'm enjoying my time as Team Physician and when I'm not working I like to hike, run and bike.

Adam Kobialka, DO
Adam Kobialka, DO
  • Position: Staff physician
  • Joined UHS: 2014
  • Education: M.D., Albany Medical College, Albany, N.Y.; family medicine residency, University of Rochester/Highland Hospital, Rochester, N.Y.; B.A., Siena College, Loudonville, N.Y.; additional education, Jagiellonian University, Kraków, Poland.
  • Professional background: Family practice physician with special interest in women's health, Hampden County Physician Associates, Ludlow, Mass., and South Windsor Medical Arts, South Windsor, Conn. Additional experience as a general practitioner, providing care in outpatient and inpatient settings. Clinical supervisor for Tufts University medical students.
  • Certifications and memberships: American Board of Family Medicine certified; member, American Academy of Family Physicians.
  • More about me: I'm a proud mother of two young sons; enjoy working in my flower garden and hiking; and speak Polish as a second language.
Lisa Lazarz-Ciesla
Lisa Lazarz-Ciesla
  • Position: Staff Physician
  • Joined UHS: 2008
  • Medical Interests: Behavioral pediatrics, adolecent medicine, gender-affirming health care, travel medicine.
  • Education: M.P.H., Case Western Reserve University, Cleveland, OH; M.D., Case Western Reserve University School of Medicine, Cleveland, OH
  • Professional Background: Rainbow Babies and Children's Hospital, Cleveland, OH; Assistant Clinical Professor of Pediatrics and clinical instructor, adolescent health, Case Western Reserve University; 10 years in pediatric group practice, Cleveland; physician, Cleveland Department of Public Health STD Clinic; physician, Aninwah Medical Center, Ghana
  • Certifications: Board certified in pediatrics
  • Memberships: American Academy of Pediatrics, Massachusetts Medical Society, International Society of Travel Medicine, WPATH
  • More About me: Married, with 3 sons, all UMass graduates. Enthusiastic gardener, cook, flutist and beekeeper.
Ilana Levenson Schmitt
Ilana Levenson Schmitt

Position: Staff physician

Joined UHS: 2001

Medical Interests: Sports medicine, pediatrics

Education:  Sports medicine fellowship, Maine Medical Center, 2000 – 2001; Internal medicine/pediatrics residency, Baystate Medical Center, 1994 –1998; M.D., University of Texas Health Science Center at San Antonio, 1994; B.A., Biology, University of Texas, 1989.

Professional Background: Vice-Chair UMass IRB; UMass Team Physician, 2002-2018; Team physician, Mount Holyoke College, 1999 – 2011; Emergency medicine physician, Mercy Medical Center, 1998 – 2000, 2001 – 2002.

Certifications: Board certified in pediatrics, internal medicine, sports medicine.

Memberships: American Academy of Pediatrics; American College of Sports Medicine.

More About Me: I truly love spending time with my gorgeous wife, playing piano, collecting baseball memorabilia, and doing stone projects around the house.

Greg Little
Greg Little

Joined UHS: 2020

Clinical Interests: Primary care, diabetes, women's health, mental health, eating disorders, public/community health

Education: MSN, Adult Primary Care Nurse Practitioner program, University of Massachusetts Graduate School of Nursing, Worcester, 2009; BA, UMass Amherst 2002

Professional Background: Registered Nurse at UMass Memorial Hospital, Worcester on medical/surgical/cardiac unit; Adult Primary Care Nurse Practitioner, Hilltown Community Health Center, Worthington MA 2009-2020

Certification and Membership: Certified by American Nurse Credentialing  Center (ANCC); Massachusetts Board of Nursing, Adult Primary Care Nurse Practitioner and board certified RN, Massachusetts Coalition of Nurse Practitioners (MCNP) member

More About Me: I graduated from UMass Amherst in 2002, and it is my honor to be able to take care of students at UHS. When I am not at work, I enjoy spending time with my husband and three small boys who keep me busy. I love maintaining a large vegetable garden and biking, hiking, and camping with my family.

Melissa Lodzieski, NP
Melissa Lodzieski, NP
  • Position: Athletics team physician
  • Medical Interests: Athletic medicine, Orthopedic medicine
  • Education: Undergrad - Central Michigan University; Medical School - Lake Erie College of Osteopathic Medicine
  • Professional Background: Team Physician for the United States Olympic Weightlifting Team
  • Memberships and Certifications: Member of AMSSM, AOASM, AOA, ACOFP, AMA. BLS certified.
  • Professional Affiliations and Honors: Award of Fellow in Sports Medicine in 2018 by the American Osteopathic Academy for Sports Medicine
  • More About Me: I enjoy hiking, weightlifting, and martial arts. I'm glad to be a part of the UMass community.
Michael Messmer
Michael Messmer

Position: Advanced Practice Clinician

Joined UHS: 2021

Medical Interests: Primary care and family medicine, substance use disorders and addiction medicine, urgent care, health education

Education: MS PA, Rutgers University - Physician Assistant Program; BA, Earlham College; Comparative Ecology and Conservation School for International Training - Ecuador

Professional Background: Family Medicine Physician Assistant with Valley Medical Group in Greenfield, MA. Research station Manager with The Guppy Project, Trinidad and Tobago. 

Memberships and Certifications: Certified, National Commission on Certification of Physician Assistants

More About Me: In my free time I enjoy mountain biking, food, and travel with my partner. 

Finn Olcott, PA
Finn Olcott, PA
  • Position: Staff Physician
  • Joined UHS: 2022
  • Medical Interests: Integrative Medicine
  • Education: Undergraduate - UMass Amherst, BS Nutrition; Medical School - Nova Southeastern University College of Osteopathic Medicine; Fellowship - University of Arizona - Integrative Medicine
  • Professional Background: Westside Family Healthcare - Wilmington, DE; Seldovia Village Tribe - Homer, Alaska; Valley Medical Group - Greenfield, MA; The Bement School, Deerfield, MA - Medical Director; Camp Emerson, Hinsdale, MA - Medical Director for a camp for children with food allergies
  • Memberships and Certifications: Board Certified - American Osteopathic Board of Family Physicians, Board Eligible - Integrative Medicine
  • Professional Affiliations and Honors: American Academy of Family Physicians, National Health Service Corps Scholarship
  • More About Me: I love cooking, yoga and reading. I have been learning to downhill ski with my kids and enjoy spending time with my family exploring New England.
Margit Walker
Margit Walker

Position: Staff Physician

Joined UHS: 2022

Medical Interests: Family medicine, Sports Medicine 

Education: MD, Indiana University School of Medicine; BA, Biochemistry, Goshen College

Professional Background: Residency at Penn State Hershey Family and Community Medicine, Sports Med Fellowship at Penn State Hershey Primary Care Sports Medicine.

Memberships and Certifications: Board certified in family medicine, member AAFP and AMSSM.

More About Me: I like to spend time outside, especially on my bike. I also enjoy going to sporting events, either as a fan or in my role as a Team Physician.

Lynn Weaver, MD
Lynn Weaver, MD