1. Home
  2. Directory
  3. Massachusetts
  4. Boston
  5. Pediatrics
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JOHN W GRAEF M.D.
NPI 1982680575
Pediatrics - Medical Toxicology in Boston, MA

Active since December 16, 2005
333 LONGWOOD AVE, BOSTON, MA 02115(617) 355-8263(617) 277-8934 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About John W Graef M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN W GRAEF M.D. (NPI 1982680575) is an individual medical toxicology provider in Boston, Massachusetts, licensed in Massachusetts (33948) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1982680575
Entity TypeIndividualMale
Primary Taxonomy2080T0002X
Provider Legal NameJOHN W GRAEFCredential: M.D.
Location Address333 LONGWOOD AVEBoston, MA 02115-5711
Mailing Address147 Milk Street, Provider Enrollment - 9th FloorBoston, MA 02109-4862 · (617) 559-8053 · Fax (617) 421-3487
Phone(617) 355-8263
Fax(617) 277-8934
Sole ProprietorNo
Enumeration DateDecember 16, 2005
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1982680575 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Medical ToxicologyAllopathic & Osteopathic Physicians
Taxonomy Code2080T0002X
License✔ Licensed in MA · 33948
Definition

Medical toxicologists are physicians that specialize in the prevention, evaluation, treatment and monitoring of injury and illness from exposures to drugs and chemicals, as well as biological and radiological agents. Medical toxicologists care for people in clinical, academic, governmental and public health settings, and provide poison control center leadership. Important areas of medical toxicology include acute drug poisoning, adverse drug events, drug abuse, addiction and withdrawal, chemicals and hazardous materials, terrorism preparedness, venomous bites and stings, and environmental and workplace exposures.

Also ListedPediatricsTaxonomy 208000000X · License 33948 (MA)
Also ListedHospitalistTaxonomy 208M00000X · License 33948 (MA)
333 LONGWOOD AVE, Boston, MA 02115
Open in Google Maps ↗

Other Identifiers 6

OtherV02406MA · Blue Cross
OtherPP624MA · Harvard Pilgrim
Other0003908MA · Neighborhood Health
Medicaid2020785MA
Other4147717-003MA · Cigna
Other715698MA · Tufts

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ROGER C NUSS MD
Otolaryngology
333 LONGWOOD AVE, FLOOR 3
BOSTON, MA 02115
Suffolk County (617) 355-6460
DR. DENNIS S POE MD
Otolaryngology
333 LONGWOOD AVE, FLOOR 3
BOSTON, MA 02115
Suffolk County (617) 355-6417
GERRI FEUER SHUBOW MS
Audiologist
333 LONGWOOD AVE, FLOOR 3
BOSTON, MA 02115
Suffolk County (617) 355-6485
MR. GERALD ANTHONY PARROTTA P.T.
Physical Therapist
333 LONGWOOD AVE, 2ND FLOOR
BOSTON, MA 02115
Suffolk County (617) 232-4018
GREGORY GOODWIN M.D.
Pediatrics (Pediatric Endocrinology)
333 LONGWOOD AVE
BOSTON, MA 02115
Suffolk County (617) 355-7476
ABHINASH SRIVATSA M.D.
Pediatrics (Pediatric Endocrinology)
333 LONGWOOD AVE, DIVISION OF ENDOCRINOLOGY
BOSTON, MA 02115
Suffolk County (617) 355-7476
DR. ANDREA A PETTINATO MD
Pediatrics (Adolescent Medicine)
333 LONGWOOD AVE, FLOOR 5
BOSTON, MA 02115
Suffolk County (617) 355-5482
DR. MICHAEL O RICH MD, MPH
Pediatrics
333 LONGWOOD AVE, FLOOR 5
BOSTON, MA 02115
Suffolk County (617) 355-7181

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Graef's NPI number?

The NPI number for John Graef is 1982680575. It was assigned to this individual provider in the NPPES registry on December 16, 2005.

Where is John Graef located?

John Graef practices at 333 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-8263.

What is John Graef's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Medical Toxicology, with taxonomy code 2080T0002X.

When was this NPI record last updated?

The NPPES record for John Graef was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.