John M. Greally
Advanced in Mosaicism

Dr. John M. Greally

Pediatrics
Montefiore Einstein
The Children's Hospital At Montefiore
3415 Bainbridge Avenue, 
Bronx, NY 

Advanced in Mosaicism
Montefiore Einstein
The Children's Hospital At Montefiore
3415 Bainbridge Avenue, 
Bronx, NY 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

John M. Greally, DMed, PhD, MB, BCh, BAO, is Chief of the Division of Genomics in the Department of Genetics, Director of the Center for Epigenomics and Professor of Genetics and Pediatrics at Montefiore Einstein. Dr. Greally is a specialist in clinical genetics, with an emphasis on rare diseases and congenital conditions. He has expertise in medical genomics, the use of advanced genomic technologies to diagnose genetic conditions.

Dr. Greally is rated as an Advanced provider by MediFind in the treatment of Mosaicism. His top areas of expertise are Vitamin D Deficiency, Mosaicism, Obesity in Children, and Malnutrition.

His clinical research consists of co-authoring 151 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 3 articles in the study of Mosaicism.

Graduate Institution
National University Of Ireland
Residency
Childrens Hospital of Pittsburgh / UPMC Health Sys
Specialties
Pediatrics
Licenses
Clinical Genetics in NY
Fellowships
Yale University
Languages Spoken
English
French
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
Archcare
  • MEDICARE SNP
Capital District Physicians Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
CenterLight Healthcare
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Hamaspik
  • MANAGED MEDICAID PLAN
  • MEDICARE SNP
Health First
  • HMO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Longevity Health Plan
  • MEDICARE SNP
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
MetroPlus Health
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE-MEDICAID PLAN
MVP Health
  • EPO
  • PPO
Oscar
  • EPO
  • HMO
  • PPO
Senior Whole Health
  • MEDICARE-MEDICAID PLAN
The Wellness Plan Medical Centers
  • MEDICARE MAPD
  • MEDICARE-MEDICAID PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
VNS Health
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 14 Less Insurance Carriers -

Locations

The Children's Hospital at Montefiore
3415 Bainbridge Avenue, Bronx, NY 10467
Call: 718-741-2323
Other Locations
Montefiore at 1250 Waters Place
1250 Waters Place, Bronx, NY 10461
Call: 718-741-2450

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.


151 Total Publications

Individuals with intellectual disability have an increased burden of de novo variants in cis-regulatory elements of glutamatergic neurons.
Individuals with intellectual disability have an increased burden of de novo variants in cis-regulatory elements of glutamatergic neurons.
Journal: medRxiv : the preprint server for health sciences
Published: November 19, 2025
View All 151 Publications
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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.

Learn more about MediFind’s expert tiers

Find Dr. Greally's expertise for a condition
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      • Advanced
      • Mosaicism
        Dr. Greally is
        Advanced
        . Learn about Mosaicism.
        See more Mosaicism experts
      • Vitamin D Deficiency
        Dr. Greally is
        Advanced
        . Learn about Vitamin D Deficiency.
        See more Vitamin D Deficiency experts
      • Experienced
      • Autism Spectrum Disorder
        Dr. Greally is
        Experienced
        . Learn about Autism Spectrum Disorder.
        See more Autism Spectrum Disorder experts
      • Brachydactyly Mononen Type
        Dr. Greally is
        Experienced
        . Learn about Brachydactyly Mononen Type.
        See more Brachydactyly Mononen Type experts
      • Chondrodystrophy
        Dr. Greally is
        Experienced
        . Learn about Chondrodystrophy.
        See more Chondrodystrophy experts
      • Chronic Graft Versus Host Disease (cGvHD)
        Dr. Greally is
        Experienced
        . Learn about Chronic Graft Versus Host Disease (cGvHD).
        See more Chronic Graft Versus Host Disease (cGvHD) experts
      • Hypotonia
        Dr. Greally is
        Experienced
        . Learn about Hypotonia.
        See more Hypotonia experts
      • Intrauterine Growth Restriction
        Dr. Greally is
        Experienced
        . Learn about Intrauterine Growth Restriction.
        See more Intrauterine Growth Restriction experts
      View All 13 Experienced Conditions
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