Meet Our Faculty!

Thank you for your interest in Fitchburg Family Medicine.  Feel free to contact any of our faculty any time to learn more! 





Felix Chang MD, FAAMA, DABIM
Clinical Associate Professor
Inpatient Service Director
Guayaquil University School of Medicine in Ecuador, 1986
UMass Fitchburg Family Medicine Residency, 2006
Areas of Interest and Research: Dr. Chang completed his training at the Fitchburg Family Medicine Residency Program in 2006. He remains on faculty at the Residency. He serves a Latin outreach program at the Leominster FHC. As director of the residency's Family Medicine Inpatient Service, Dr. Chang supervises morning report and rounds and lectures frequently on topics related to inpatient medicine, maternity and pediatrics. Dr. Chang is fluent in English, Spanish and Portuguese.

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James J. Ledwith, MD, FAAFP
Residency Director and Assistant Professor
College of William and Mary, 1979
Medical College of Virginia/Virginia Commonwealth University, MD, 1983
Family Practice Residency at The Toledo Hospital, OH, 1986
Areas of Interest and Research: Clinical interests include chronic disease management, preventive services, obesity, substance abuse and suboxone therapy. I love delivering babies! Practice-based research interests include patient safety and care improvement.
Hometown: Numerous homes in my youth in MA, NJ, and PA, but Tappahannock, VA became hometown for me and my children. I am currently settled in Franklin, MA. 
About UMass Fitchburg:  "After 19 years of clinical practice before coming to UMass, I maintain a passion for community service and for the care of patients with a focus on health maintenance and systems implementation to enhance safe, accessible, comprehensive service. When I made the move to UMass, I shopped for a residency that was community-oriented and expressed care for its members, patients and staff like family. I found what I was looking for in Fitchburg!" 
Personal Facts: "My wife Lauren keeps my life in balance and my three children keep me active. Hobbies (often conflicting) include good food, reading, fitness, visiting the Cape, and protecting my home from the enthusiastic exploration of our new lab pup, Cassie. One day, with no kids' sports and school events, and with house renovations completed, I'll dust off my golf clubs or perhaps join another medical mission team."
Community Involvement: Dr. Ledwith also serves as the Medical Director of the Epworth Free Clinic in Worcester.



Charles W. Lehnardt, DO
A.T. Still University - Kirksville College of Osteopathic Medicine, Kirksville, MO, 2008
Residency at Via Christi Regional Medical Center, Wichita, KS, 2011
Neuromusculoskeletal Medicine / OMM Plus 1 Fellowship at NERMC in Kirksville, MO, 2012
Professional Affiliations: AOA, ACOFP, AAFP, AAO, Cranial Academy
Areas of Interest and Research: Clinical interests include the integration of Osteopathic Manipulation (OMM) with primary care, teaching and training medical students and residents in family medicine and OMM. In the past I have participated that researched utilization of OMM in clinical practice.
About UMass: "I am impressed with the supportive environment of the family medicine department at UMass. Each member is encouraged to improve on their interests and talents, collaborate with colleagues, and take the best care of their patients. The department is actively training each other as well as the residents and students we are here to teach."
Why Family Medicine: "Family medicine is very dynamic, and I find the most satisfaction in continuity care, educating and guiding patients toward their best health. I find osteopathic manipulative treatment is integral in the treatment of patients’ acute and chronic illnesses."


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Beth Kurtz Mazyck, MD, FAAFP
Medical Director, HealthAlliance Fitchburg Family Practice
Associate Clinical Professor
1979 University of Oregon, Eugene
1984 George Washington University School of Health Sciences, Washington, DC
1987 Dwight David Eisenhower Army Medical Center, Fort Gordon, GA
Areas of Interest and Research: Women’s Health, Clinical Ethics, Community Health
Hometown: Hanover, NH
About UMass Fitchburg: "UMass Fitchburg is a great place to train. The education is wonderful, the variety of opportunities outstanding, and the resident support is unmatched at any residency."
Why Family Medicine? "I wanted the opportunity to really get to know my patients and be involved in their lives. I needed to know that I was helping them remain healthy, not just recover from being sick. Also, the thought of doing the same thing over and over and over again (as with subspecialty practices) just seemed too BORING!  Besides, Family Docs are the nicest group of docs you could ever want to work with!"
Personal Facts: "I hate to be bored, but am rarely bored since I married my husband, acquired 3 teenage sons, then had 3 more children!  Now I have not only 6 children, but 5 grandchildren…no time for boredom! I love to travel, but with 6 children I don’t have the money to travel, so I have stayed in the Army – free trips to Iraq, Kosovo, Bolivia, and Guatemala (among others.)"
Community Involvement: Dr. Mazyck is the Deputy Commander of Clinical Services for the 399th Combat Support Hospital and has served in Iraq and Kosovo. She has also served on overseas humanitarian missions in Bolivia, Guatemala, Malawi and with the Indian Health Services. In addition, Dr. Mazyck has organized and provided leadership for the Regional Public Health Coalition for Northern Worcester County.   

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Michelle Pugnaire, MD
Associate Professor of Family Medicine and Community Health 
Vice Dean for Undergraduate Medical Education, UMass Medical School
Areas of Interest and Research: Dr. Pugnaire is responsible for providing leadership for curriculum development, implementation, and evaluation in undergraduate medical education. She has served as Associate Dean for Admissions and Assistant Dean for Student Advising. During the past 15 years, Dr. Pugnaire has served in a variety of administrative and teaching positions in the Department of Family Medicine, and is currently Project Director for the Macy Initiative in Health Communication grant at UMass Medical School as well as Principal Investigator for the Pfizer Sexual Health in Undergraduate Medical School Curricula and AAMC/John A. Hartford Foundation Enhancing Gerontology and Geriatrics Medicine Education in Undergraduate Medical Education grants.Her education interests and achievements include faculty development in student advising, technology in teaching, the McQ Standardized Family curriculum, and the expansion of the standardized family across three clerkships as the principal investigator for a UME 21 Associate Partnership grant. Dr. Pugnaire is the recipient of numerous teaching awards and maintains a community-based clinical practice in family medicine with the UMass Fitchburg Family Medicine Residency Program.


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