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Mark A. Barber, DO
Glenn Griffiths, M.D.
Gerard J. Mahoney, DO
Richard Nielsen, MD
Douglas O'Mara, MD
George Ryckman, DO
Geoffrey Turner, MD
Sara Wine, DO
Roberta Herbst, PA-C
Ellen Herring, FNP
Jackie Norton, PA-C
Amanda Ross, PA

Medical Staff

Crystal Lake Health Center has twelve providers to care for all your healthcare needs.

Family Practice                      Internal Medicine         

Mark A. Barber, D.O.                                    Richard C. Nielsen, M.D.

Gerard J. Mahoney, D.O.                               Geoffrey Turner, M.D.

George Ryckman, D.O.

Glenn C. Griffiths, M.D.

Sara N. Wine, D.O.

Mid-level Practitioners                  Pediatrics

Ellen Herring, F.N.P.                                       Douglas B. O'Mara, MD

Roberta Herbst, P.A.-C

Jacqueline Norton, P.A.-C

Amanda Ross, P.A.-c