Doctors Clinic

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Ready to Feel Great?

Doctors Clinic Amarillo delivers compassionate, personalized healthcare—combining modern medicine, prevention, and advanced treatments to help patients thrive in every stage of life.

Experts Who Truly Care

Dr. Gerald Parker is an osteopathic physician with over 38 years of experience in preventive medicine. Serving the Amarillo community with passion, Dr. Parker integrates both holistic and medicinal treatment options to care for adult patients of all ages. He earned his Doctorate of Osteopathic Medicine from Kirksville College of Osteopathic Medicine in Missouri and completed his internship at Art Centre Hospital in Detroit, Michigan. Licensed in Texas, New Mexico, and Nebraska, Dr. Parker also holds leadership roles such as President of the Southwest Academy of Preventive Medicine and Co-Director of the Southwest Institute of Preventive Medicine. With advanced training in stem cell therapy and memberships in organizations such as the American Academy of Anti-Aging Medicine and the American College of Regenerative Medicine, Dr. Parker is nationally recognized for his pioneering work in modern medical innovation. His expertise has even been featured on shows like The Today Show and That’s Incredible.

Gerald Parker, DO

Osteopathic Physician

Cassandra Whitney, FNP

Family Nurse Practitioner

With over 20 years at Doctors Clinic Amarillo, Cassandra Whitney, FNP, has become a trusted partner in patient care. She completed her undergraduate training at Texas Tech University and West Texas A&M University, followed by graduate studies at Western University of Health Sciences in Pomona, CA. Board certified through ANCC, Cassandra is an active member of organizations including the American Nurses Association, Texas Nurse Practitioners, and Sigma Theta Tau International. With specialized training in Prolotherapy and Regenerative Medicine, she provides comprehensive, advanced care while maintaining a warm, patient-centered approach.

Cassandra Whitney, FNP

Family Nurse Practitioner

Hear From Our Happy Patients

Clinic Hours

Monday – 8:00 am to 3:00 pm
Tuesday – 8:00 am to 3:00 pm
Wednesday – 8:00 am to 6:00 pm
Thursday – 8:00 am to 3:00 pm
Friday – Closed
Saturday – Appointment Only
Sunday – Closed