Marc S. Williams
Experienced in Autism Spectrum Disorder
Experienced in Autism Spectrum Disorder

Overview

Dr. Williams is a board-certified and fellowship-trained specialist in clinical genetics. He attended the University of Wisconsin, where he received his medical degree, and completed his residency at the University of Utah Hospitals and Clinics. He completed a fellowship in clinical genetics at the University of Wisconsin Hospitals and Clinics. Dr. Williams is certified by the American Board of Medical Genetics and Genomics in clinical genetics and by the American Board of Preventive Medicine in clinical informatics. He is also certified by the American Board of Pediatrics. Dr. Williams is the director emeritus of the Genomic Medicine Institute. Though he does not have a regular clinical practice, he does see patients enrolled in research projects.

Dr. Williams is rated as an Experienced provider by MediFind in the treatment of Autism Spectrum Disorder. His top areas of expertise are Familial Colorectal Cancer, Myoglobinuria Recurrent, Familial Adenomatous Polyposis, Hyperthermia, and Colonoscopy.

His clinical research consists of co-authoring 239 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 4 articles in the study of Autism Spectrum Disorder.

Graduate Institution
U. Of Wisconsin Medical School And Public Health, 1981 - Doctor Of Medicine
Residency
U. of Utah Hospital and Clinics, 1984
Specialties
Medical Genetics
Pediatrics
Licenses
Clinical Genetics in PA
Board Certifications
The American Board Of Medical Genetics And Genomics In Clinical Genetics And By The American Board Of Preventive Medicine In Clinical Informatics
Fellowships
U. of Wisconsin Hospital and Clinics, 1996
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Geisinger
  • HMO
  • POS
  • PPO
Moda Health
  • EPO
  • PPO
PA Health and Wellness
  • HMO
  • MANAGED MEDICAID PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
UPMC
  • EPO
  • PPO
View 3 Less Insurance Carriers -

Locations

Geisinger Medical Center - Pediatric Genetics
100 North Academy Avenue, Danville, PA 17822
Other Locations
Geisinger Lewisburg - Pediatric Genetics
120 Hamm Drive, Lewisburg, PA 17837
Geisinger Healthplex Woodbine - Pediatric Genetics
16 Woodbine Lane, Danville, PA 17821

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


238 Total Publications

Genomic medicine year in review: 2025.
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 (14.7 miles away)
Languages Spoken:
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Dr. Challman is a board-certified and fellowship-trained specialist in neurodevelopmental pediatrics. His clinical interests include developmental disorders, including intellectual disability and autism. His research interests include genetic etiologies of developmental disorders and developmental screening. Dr. Challman earned his medical degree from Georgetown University. He completed his residency at Mayo Clinic, Rochester, then completed a fellowship in neurodevelopmental disabilities at Kennedy Krieger Institute. Dr. Challman is certified by the American Board of Pediatrics in developmental-behavioral pediatrics and neurodevelopmental disabilities. Dr. Challman is rated as an Advanced provider by MediFind in the treatment of Autism Spectrum Disorder. His top areas of expertise are Autism Spectrum Disorder, Increased Head Circumference, and Hypotonia.

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Lewisburg, PA 
 (14.7 miles away)
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Dr. Myers is a fellowship-trained specialist in neurodevelopmental pediatrics. His clinical and research interests include autism spectrum disorder, intellectual disability, language disorders, cerebral palsy and other motor disorders, genetics of neurodevelopmental disorders, and psychopharmacology. His research interests also include origins of variable expressivity of pathogenic genetic variants, within-task variability in language and other aspects of development, and epidemiology and natural history of neurodevelopmental disorders. Dr. Myers earned his medical degree from Thomas Jefferson University. He completed his residency at Geisinger Medical Center, and completed a fellowship in neurodevelopmental disabilities at Kennedy Krieger Institute/Johns Hopkins University School of Medicine. Dr. Myers is certified in neurodevelopmental disabilities, developmental-behavioral pediatrics and general pediatrics by the American Board of Pediatrics. Dr. Myers is rated as an Advanced provider by MediFind in the treatment of Autism Spectrum Disorder. His top areas of expertise are Autism Spectrum Disorder, Micrognathia, Hypotonia, and Infantile Pneumothorax.

Advanced in Autism Spectrum Disorder
Developmental and Behavioral Pediatrics | Pediatrics
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501 Cetronia Rd Ste 115, 
Allentown, PA 
 (60.6 miles away)
Languages Spoken:
English

Stephanie Straka is a Developmental and Behavioral Pediatrics specialist and a Pediatrics provider in Allentown, Pennsylvania. Dr. Straka is rated as an Advanced provider by MediFind in the treatment of Autism Spectrum Disorder. Her top areas of expertise are Autism Spectrum Disorder, Developmental Dysphasia Familial, Microcephaly, and Fetal Alcohol Syndrome (FAS).

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

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