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

Dr. Mary B Deegan Haff, DO

Individual provider Pediatric Emergency Medicine (Emergency Medicine) Physician · NPI 1659565919

Dr. Mary B Deegan Haff, DO is a Pediatric Emergency Medicine (Emergency Medicine) Physician in Mineola, New York. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
In the registry since
2007
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

259 1st St
Mineola, NY 11501-3957
Phone: (516) 663-2829
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Adolescent Medicine Physician (primary) Taxonomy 2080A0000X · Licence 245621-1 (NY)
Pediatric Emergency Medicine (Emergency Medicine) Physician Taxonomy 207PP0204X · Licence 245621 (NY)

Record details

NPI number1659565919
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 30, 2007
Last updated in NPPESApril 28, 2026
Certification dateApril 28, 2026
Mailing address259 1st St, Mineola, NY 11501-3957

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