JOHN W. GRAEF M.D. – NPI #1982680575
Pediatrics
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.
JOHN GRAEF is a physician located in BOSTON, MA. NPPES has assigned the NPI number 1982680575 to JOHN GRAEF on December 16, 2005. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 2080T0002X from the Health Care Provider Taxonomy code set, which is classified as Pediatrics, specializing in Medical Toxicology
The NPI profile was last updated on Sep 11, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN GRAEF below.
NPI Profile for
JOHN W. GRAEF
(more than 20 years ago)
BOSTON, MA 02115-5711 Phone: (617) 355-8263 Fax: (617) 277-8934
PROVIDER ENROLLMENT - 9TH FLOOR
BOSTON, MA 02109-4862 Phone: (617) 559-8053 Fax: (617) 421-3487
Identifiers for JOHN GRAEF
Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.
See identifiers
| Description | Issuer | State | Identifier |
|---|---|---|---|
| other | BLUE CROSS | MA | V02406 |
| other | CIGNA | MA | 4147717-003 |
| other | HARVARD PILGRIM | MA | PP624 |
| other | NEIGHBORHOOD HEALTH | MA | 0003908 |
| other | TUFTS | MA | 715698 |
| medicaid | MA | 2020785 |
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 2080T0002X - Pediatrics / Medical Toxicology (Primary) |
MA | 33948 |
| 208M00000X - Hospitalist |
MA | 33948 |
| 208000000X - Pediatrics |
MA | 33948 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.