DR. THOMAS SIESHOLTZ M.D. NPI 1578545349

NPI Information

  • NPI: 1578545349
  • Provider Name: DR. THOMAS SIESHOLTZ, M.D.
  • Classification: Internal Medicine - 207RH0003X
  • Specialization: Hematology & Oncology
  • Entity Type: Individual
  • Address: 915 LAWN AVENUE
    SUITE 202
    SELLERSVILLE, PA
    ZIP 18960
  • Phone: (215) 453-3300

Map and Directions

Get Directions

NPI Details

DR. Thomas Siesholtz, M.D. is a hematology and oncology internal medicine in Sellersville, PA. The provider is 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. DR. Thomas Siesholtz, M.D. NPI is 1578545349. The provider is registered as an individual entity type.

The NPPES NPI record indicates the provider is a male.

The provider's business location address is:

915 LAWN AVENUE
SUITE 202
SELLERSVILLE, PA
ZIP 18960-560
Phone: (215) 453-3300
Fax: (215) 453-3306

The enumeration date for this NPI number is 11/17/2005 and was last updated on 9/16/2014.

Taxonomy Codes

The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:

No. Taxonomy Code Taxonomy Clasification Taxonomy Specialization License Number License State Primary
1207RH0003XInternal MedicineHematology & OncologyMD022295EPENNSYLVANIAYes

Other Identifiers

The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.

No. Other Provider Identifier Other Provider Identifier Type Other Provider Identifier State Other Provider Identifier Issuer
1156024MEDICARE PINPENNSYLVANIA
20009629600002MEDICAIDPENNSYLVANIA
3B40145MEDICARE UPINPENNSYLVANIA

What is NPI?

NPI stands for National Provider Identifier. The NPI is a 10-digit identification number that is completely unique. The NPI number by itself does not contain any identifiable information such as a provider’s speciality or location. The NPI is assigned to individuals or organizacions for their lifespan and it is independent of key provider information type updates like a change of practices, location or speciality.

This page was last updated on: 11/21/2025

NPI Synchronization or Removal

All materials and services on this site are provided on an "as is" and "as available" basis without warranty of any kind. The NPI record is maintained by the National Plan & Provider Enumeration System (NPPES) and anyone may request this information and other NPPES health care provider data from HHS under The Freedom of Information Act (FOIA), Title 5 of the United States Code, section 552. To update the NPI records please contact the NPPES.

Previous NPI
Next NPI