JACK LEITNER MD – NPI #1205975067
Internal Medicine
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
JACK LEITNER is a physician located in FRAMINGHAM, MA. NPPES has assigned the NPI number 1205975067 to JACK LEITNER on February 06, 2007. 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 207RX0202X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Medical Oncology
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 JACK LEITNER below.
NPI Profile for
JACK LEITNER
(more than 19 years ago)
FRAMINGHAM, MA 01702 Phone: (508) 875-1964 Fax: (508) 626-7690
Identifiers for JACK LEITNER
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.
| Description | Issuer | State | Identifier |
|---|---|---|---|
| medicaid | MA | 2017725 |
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 |
|---|---|---|
| 207RX0202X - Internal Medicine / Medical Oncology (Primary) |
MA | 31597 |
| 207R00000X - Internal Medicine |
MA | 31597 |
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.