U.S. Dermatology Partners Expands Footprint with Arizona Partnership

November 22, 2017

North Valley Dermatology was founded in 1986 by Dr. Mary Fredenberg and offers a full suite of dermatological treatments including general, surgical, and cosmetic dermatology, as wells as Mohs micrographic surgery. North Valley Dermatology has a team of four board-certified physicians and four physician assistants on staff. Adjacent to the North Valley Dermatology medical office is its spa, Original Skin, which offers an array of aesthetic services to complement its full suite of medical dermatology offerings.

Dr. Mary Fredenberg began her dermatology practice after completing her residency in 1986. She holds a B.S. in Microbiology from Arizona State University and attended medical school at the University of Arizona. She completed her Internal Medicine internship with Good Samaritan Medical Center in Phoenix, AZ in 1983 and her Dermatology residency at Rush-Presbyterian-St. Luke’s Medical Center in Chicago, IL in 1986. Dr. Fredenberg has been board-certified by the American Board of Dermatology since 1986.

Dr. Theresa Magne joined North Valley Dermatology in 1995 after completing her residency in Dermatology at Rush-Presbyterian-St. Luke’s Medical Center in Chicago, IL. She attended medical school at the University of Illinois College of Medicine and completed an internship in Internal Medicine at Loyola University Medical Center in Maywood, IL. She has been board-certified by the American Board of Dermatology since 1995.

Dr. Douglas Heiner is a board-certified and fellowship-trained dermatologic surgeon who specializes in Mohs surgery, laser and cosmetic dermatology, and reconstructive surgery. He received his medical degree magna cum laude from the University of Texas School of Medicine at Galveston and completed his residency in Dermatology at Boston University at Roger Williams Medical Center. Following residency, Dr. Heiner completed a fellowship in Mohs and dermatologic surgery sanctioned by the American College of Mohs Surgery.

Dr. Adam Sorensen received his medical degree at the Kirksville College of Osteopathic Medicine in Kirksville, MO in 2009. Following his initial medical training, Dr. Sorensen went on to complete a one-year internship followed by a two-year residency and board-certification in Internal Medicine at the Virginia Mason Medical Center in Seattle, WA. Dr. Sorensen later went on to complete three years of Dermatology residency training at the Lake Erie Consortium for Osteopathic Medical Training in Mesa, AZ, focusing on both medical and surgical dermatology.

Joining the physicians of North Valley Dermatology are their four highly-experienced physician assistants: Lisa Greenan, PA-CJulie Taubert, PA-CHaley Meier, PA-C; and Elizabeth Penfold, PA-C.

“As we expand throughout the Valley, Drs. Mary Fredenberg, Theresa Magne and the 6 associates of North Valley Dermatology create a strong presence for USDP in Peoria and the surrounding Phoenix suburbs, adding a well-established and highly-respected dermatology group with a 30-year heritage in the area,” said Dr. Howard Luber, Southwest Medical Director at U.S. Dermatology Partners. “North Valley Dermatology is another exceptional addition to the USDP team, and further expands upon our patient-centric philosophy and high-standard of care.”

If you would like more information about U.S. Dermatology Partners, or if you have any questions regarding the partnership with North Valley Dermatology, please contact one of the team members listed below:

U.S. Dermatology Partners

Geoff Wayne
Chief Executive Officer

Scott Wells
Chief Development Officer

Brent Ohlsen
Director of Corporate Development

About U.S. Dermatology Partners 
Headquartered in Dallas, TX, U.S. Dermatology Partners provides comprehensive practice management services to over 130 board-certified dermatologists and 50 midlevel providers across ~70 locations in Texas, Kansas, Missouri, Arizona, Colorado, Louisiana and Maryland. U.S. Dermatology Partners supports providers so they can focus exclusively on delivering high-quality care to patients.

As one of the largest physician-owned dermatology practices in the country, U.S. Dermatology Partners patients not only have access to general medical, surgical, and cosmetic skin treatment through its coordinated care network, but also benefit from the organization’s strong dermatology subspecialty thought leaders and medical advisory board. The physicians of U.S. Dermatology Partners are fervently focused on providing the highest level of patient-first care, and its team, therefore, includes recognized national leaders in areas such as clinical research, psoriasis, and Mohs Surgery. To learn more, visit usdermatologypartners.com

About ABRY Partners 
Founded in 1989 and headquartered in Boston, Massachusetts, ABRY Partners is an experienced and successful private equity investment firm focused on media, communications, healthcare services, insurance services, business and information services. Since its founding, ABRY has completed more than $62 billion of transactions, representing investments in more than 550 properties.

Find a location near me


Find a location