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Pediatrics

Abbey Oatman, PA-C
Abbey Oatman, PA-C

Ms. Oatman earned her Master of Science degree in Physician Assistant Studies as well as her Bachelor of Science degree in medical studies at DeSales University, in Center Valley, PA.

Certifications
Certified Physician Assistant, Advanced Cardiac Life Support Provider, Pediatric Advanced Cardiac Life Support Provider

Alexandra Gurko, C.R.N.P

Education

Ms. Gurko earned her Master of Science in Nursing degree in Pediatric Primary Care, and her Bachelor of Science in Nursing with a minor in Human Biology, both at Gwynedd Mercy University. She also received an Associates of Science in Nursing at Gwynedd Mercy University.

Certifications

Registered Pediatric Nurse Practitioner, Registered Nurse, CPR Certified.

Visit Keystone Pediatrics
(717) 709-7950
Allison Hickman, D.O.
Allison Hickman, D.O.

Ms. Hickman’s internship and residency were completed at Penn State Children’s Hospital/M.S. Hershey Medical Center in Hershey, PA.  She earned her Doctor of Osteopathic Medicine degree at the Philadelphia College of Osteopathic Medicine in Philadelphia, PA. and Bachelor of Science degrees in both mathematics and biology at Elizabethtown College, in Elizabethtown PA.

Board Certified
American Board of Osteopathic Pediatricians

Affiliated Hospitals
Waynesboro Hospital, Waynesboro PA

Andrew Ducey, C.R.N.P
Andrew Ducey, C.R.N.P

Education

Mr. Ducey earned his Master of Science in Nursing degree at the University of Toledo Medical Center and his Bachelor of Science degree in nursing at Bowling Green State University.

Certifications

Registered Pediatric Nurse Practitioner, Registered Nurse

Visit Keystone Pediatrics
(717) 709-7950
Angie Wallace, CRNP
Angie Wallace, CRNP

Mrs. Wallace earned her Master of Science in Nursing degree in Pediatric Acute/Chronic Care at the University of Pennsylvania and her Bachelor of Science in Nursing at York College of Pennsylvania. 

Certifications- Registered Pediatric Nurse Practitioner, Registered Nurse, CPR Certified, Pediatric Advanced Life Support Certified.

Visit Keystone Pediatrics
(717) 387-8060
Arnauld Oreste, M.D.
Arnauld Oreste, M.D.

Arnauld Oreste, M.D.

Pediatrician

Dr. Oreste completed his pediatric residency at Brookdale University Hospital and Medical Centre, in Brooklyn New York, and his medical degree at Universite D’ Etat d’Haiti, in Port au Prince, Haiti. In addition to English, Dr. Oreste speaks both French and Creole.

Board Certified- American Academy of Pediatrics

Affiliated Hospitals
Waynesboro Hospital, Waynesboro PA

Visit Keystone Pediatrics
(717) 387-8060
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Beverly Curtis, CRNP
Beverly Curtis, CRNP

Ms. Curtis earned her Doctor of Nursing Practice at Chatham University, her Post Master’s Certificate as a Pediatric Nurse Practitioner at West Virginia University, a Master’s of Science in Nursing Administration and Research at Indiana University of Pennsylvania, and her Bachelor’s in Nursing at Waynesburg University. Ms Curtis has also earned a Bachelors’ of Science in speech and language therapy/education at Indiana University of Pennsylvania.

Certifications
Registered Pediatric Nurse Practitioner, Registered Nurse, CPR Certified, Pediatric Advanced Life Support Certified, La Leche League Leader Certification, International Board of Lactation Consultant Examiners Certification IBCLC.

Visit Keystone Pediatrics
(717) 709-7950
Blachek, Julie P.A.-C.
Blachek, Julie P.A.-C.

Position
Physician Assistant

Education
Ms. Blachek earned her Master of Science degree in Physician Assistant Studies at King’s College in Wilkes-Barre, PA. She earned her Bachelor of Science degree at East Stroudsburg University in East Stroudsburg, PA.

Certifications
Certified Physician Assistant Advanced Cardiac Life Support Provider Basic Life Support Provider

Visit Keystone Pediatrics
(717) 709-7950
Colli, Michael J. M.D.
Colli, Michael J. M.D.

Position

Chief Medical Officer, Keystone Health
Pediatrics Director
Pediatrician

Education
Dr. Colli’s internship and residency was completed at the pediatrics department of the Children’s Hospital Medical Center in Cincinnati in 2001. He earned his M.D. at the University of Rochester School of Medicine in Rochester, NY, and his B.A. at Johns Hopkins University in Baltimore.

Board Certified
American Academy of Pediatrics

Affiliated Hospitals
Chambersburg Hospital, Chambersburg, PA

Visit Keystone Pediatrics
(717) 709-7950
Galicia, Karen M.D.
Galicia, Karen M.D.

Position
Pediatrician

Education
Dr. Galicia completed her Residency in Pediatrics at Morristown Memorial Hospital in Morristown, NJ. She earned her medical degree from the University of the City of Manila in Manila, Philippines. She completed her Bachelor of Science degree at the University of the Philippines in Quezon City, Philippines.

Affiliated Hospitals
Chambersburg Hospital, Chambersburg, PA

Languages
Filipino

(717) 709-7950
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