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Many physicians have multiple practice locations. Please view the physician's profile for a complete list of their locations.
He Zhang, CRNA
Anesthesiology (Hospital-Based)
Orlando Health Pediatric Anesthesia Consultants

Jenny Zheng, RD, LD/N, CNSC
Nutrition
Orlando Health Digestive Health Institute Center for Inflammatory Bowel Disease - Downtown Orlando
Suite 310
Orlando, FL 32806
Phone: (321) 841-4344
Fax: (321) 843-6326
Hours:
Monday - Friday, 8:00 am - 5:00 pm

Angela Zimmerman, APRN
Pediatric Neurosurgery
Orlando Health Children's Neuroscience Institute Neurosurgery - Downtown Orlando
Suite 403
Orlando, FL 32806
Phone: (321) 841-3050
Fax: (321) 843-3570
Hours:
By appointment only

Tracy R. Zito, MD
General Surgery
Orlando Health Medical Group Surgery - Downtown Orlando
Suite 200
Orlando, FL 32806
Phone: (407) 649-6884
Fax: (407) 245-7059
Hours:
Monday through Thursday, 8:00 am – 4:30 pm
Friday 8:00 am - 2:30 pm

Colleen M. Zittel, MD
Physical Medicine and Rehabilitation
Orlando Health Jewett Orthopedic Institute – Lake Mary
Suite 2001
Lake Mary, FL 32746
Phone: (321) 843-5851
Hours:
Walk-in Hours
Monday - Friday:
8:00 AM - 4:00 PM
Extended hours coming in fall 2025

Gregory A. Zittel, MD
Gynecology (GYN)
Orlando Health Physician Associates - Sanford - Gynecology
Suite 1090
Sanford, FL 32771
Phone: (407) 302-3133
Fax: (407) 330-4690
Hours:
Monday - Thursday, 8:00 am - 5:00 pm
Friday, 8:00 am - 12:00 pm

Stephanie Lee Zobel, MD
Obstetrics and Gynecology
Orlando Health Women's Institute OB/GYN Hospitalist Group
Omer Zulfiqar, MD
Internal Medicine (Hospital-Based)
Orlando Health Medical Group Inpatient Medicine

Justin William Zumsteg, MD
Orthopedic Surgery
Orlando Health Jewett Orthopedic Institute - Spring Lake
Suite I
Orlando, FL 32819
Phone: (321) 842-0060
Fax: (321) 842-0089
Hours:
Monday - Friday: 7:15 AM - 5:00 PM
24/7 Appointment Scheduling Available

Amaya de la Pena Porras, MD
Neurology

Samantha Spishock, PharmD
Pediatric Hematology and Oncology
Arnold Palmer Hospital Haley Center for Children’s Cancer and Blood Disorders

Helen Winters, DTR
Pediatric Gastroenterology (GI)
Orlando Health Arnold Palmer Hospital for Children Center for Digestive Health and Nutrition
Orlando, FL 32806
Phone: (321) 841-3338
Fax: (321) 841-2170
Hours:
Monday - Friday, 8:00 am - 4:30 pm (by appointment only)