JOHN W GRAEF M.D.
NPI 1982680575
Pediatrics - Medical Toxicology in Boston, MA
NPI Status: Active since December 16, 2005
Contact Information
333 LONGWOOD AVE
BOSTON, MA
ZIP 02115
Phone: (617) 355-8263
Fax: (617) 277-8934
- Individual
- Male
- Pediatrics
- Medical Toxicology
About JOHN GRAEF
This page provides the complete NPI Profile along with additional information for John Graef, a pediatrician established in Boston, Massachusetts with a medical specialization in Pediatrics, focusing in medical toxicology . The healthcare provider is registered in the NPI registry with number 1982680575 assigned on December 2005. The practitioner's primary taxonomy code is 2080T0002X with license number 33948 (MA). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1982680575
- Provider Name
- JOHN W GRAEF M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 333 LONGWOOD AVE BOSTON, MA 02115
- Location Phone
- (617) 355-8263
- Location Fax
- (617) 277-8934
- Mailing Address
- 147 MILK STREET PROVIDER ENROLLMENT - 9TH FLOOR BOSTON, MA 02109
- Mailing Phone
- (617) 559-8053
- Mailing Fax
- (617) 277-8934
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-16-2005
- Last Update Date
- 09-11-2025
- Code Navigator
A pediatrician like John Graef is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Pediatrics Medical Toxicology
- Taxonomy Code
- 2080T0002X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 33948
- License State
- MA
- Taxonomy Description
- 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.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | 33948 (MA) |
| 2 | 208M00000X | Allopathic & Osteopathic Physicians | Hospitalist | 33948 (MA) |
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Additional Identifiers
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| V02406 | OTHER (01) | MA | BLUE CROSS |
| PP624 | OTHER (01) | MA | HARVARD PILGRIM |
| 0003908 | OTHER (01) | MA | NEIGHBORHOOD HEALTH |
| 2020785 | MEDICAID (05) | MA | |
| 4147717-003 | OTHER (01) | MA | CIGNA |
| 715698 | OTHER (01) | MA | TUFTS |
Reviews for JOHN W GRAEF M.D.
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1982680575, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982680575, enumerated as an "individual" on December 16, 2005.
The provider is located at 333 LONGWOOD AVE BOSTON, MA 02115 and the phone number is (617) 355-8263.
Pediatrics with taxonomy code 2080T0002X and a focus in Medical Toxicology.
The provider might be accepting Accepts: Blue Cross Blue Shield, Medicare, Medicaid, Cigna. Please consult your insurance carrier or call the provider to verify.
