Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John William O'Brien, MD

Individual provider Physical Medicine & Rehabilitation Physician · NPI 1447288741

Dr. John William O'Brien, MD is a Physical Medicine & Rehabilitation Physician in Wallingford, Connecticut. Licensed in Connecticut. Registered with an NPI since 2006.

Licensed in
CT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

Gaylord Farm Rd
Wallingford, CT 06492
Phone: (203) 284-2800
Fax: (203) 679-3598
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Medicine & Rehabilitation Physician (primary) Taxonomy 208100000X · Licence 024998 (CT)

Record details

NPI number1447288741
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2006
Last updated in NPPESJuly 8, 2007

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