JOHN A. KARK M.D. – NPI #1538241625
Internal Medicine
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
JOHN KARK is a physician located in PHILADELPHIA, PA. NPPES has assigned the NPI number 1538241625 to JOHN KARK on October 19, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 207RH0003X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Hematology & Oncology
The NPI profile was last updated on May 31, 2026. 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 KARK below.
NPI Profile for
JOHN A. KARK
(more than 19 years ago)
SUITE 1020
PHILADELPHIA, PA 19107-4310 Phone: (215) 955-4730 Fax: (215) 503-9188
14TH FLOOR
PHILADELPHIA, PA 19106-4404 Phone: (215) 955-9628 Fax: (215) 955-2420
Identifiers for JOHN KARK
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 | DC | 0485740 | |
| medicaid | MD | 6019200 | |
| medicaid | NJ | 0153711 |
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 |
|---|---|---|
| 207RH0003X - Internal Medicine / Hematology & Oncology (Primary) |
PA | MD431818 |
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.