Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Thomas Siesholtz, MD

Individual provider Hematology & Oncology Physician · NPI 1578545349

Dr. Thomas Siesholtz, MD is a Hematology & Oncology Physician in Sellersville, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2005.

Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

915 Lawn Ave Ste 202
Sellersville, PA 18960-1560
Phone: (215) 453-3300
Fax: (215) 453-3306
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence MD022295E (PA)

Record details

NPI number1578545349
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 17, 2005
Last updated in NPPESSeptember 16, 2014

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