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Meet Our Team

Experience, expertise and world-class care

Crozer-Keystone’s friendly and experienced Bariatric Surgery team is ready to help you every step of the way through your weight loss journey.

Meet Our Surgeons and Staff

Dr. Leon Katz

Leon Katz, M.D., F.A.C.S.
Medical Director

Read more about Dr. Katz

Dr. Aley Tohamy

Aley Tohamy, M.D.

Read more about Dr. Tohamy

Dr. Sergey Zhitnikov

Sergey Zhitnikov, M.D.

Read more about Dr. Zhitnikov

Stephanie BaerStephanie Baer, R.N.,
C.B.N., Bariatric Program

Dr. Aley TohamyRachel Wooters, R.D.,
M.A., L.D.N.,
Bariatric Dietitian

Additional Staff:

  • Cathy Lupinek – Practice Manager
  • Cheryl Stabulis, R.N. – Case Management Nurse
  • Crystal Green, L.P.N.- Pre-operative Nurse
  • Olivia Randolph-Lyons – Medical Receptionist
  • Other Crozer-Keystone medical specialists and support staff

Ready to get started on the road to healthy weight loss?

If you’re interested in Crozer-Keystone’s Comprehensive Bariatric Surgery Program, take the next step and attend a free educational seminar – in person at a location near you, or online from your home or office via a convenient webinar.

For physician referrals or other medical inquiries, call (610) 619-8450.