Dr. Thomas Siesholtz, MD
- Part D claims, 2017
- 11
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 915 Lawn Ave, Sellersville, PA 18960-1551
- Practice phone
- Call (215) 453-3300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bux-mont Oncology Hematology Medical Associates
Medical specialty practice · Sellersville, Pennsylvania
Find Dr. Siesholtz's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Thomas Siesholtz is a hematologist and oncologist in Sellersville, Pennsylvania
Dr. Siesholtz practices at Bux-mont Oncology Hematology Medical Associates in Sellersville, Pennsylvania.
Dr. Siesholtz's NPI, 1578545349, was assigned on November 17, 2005. Dr. Siesholtz holds Pennsylvania license MD022295E.
- NPI
- 1578545349NPI Registry (opens in a new tab)
- NPI enumeration date
- November 17, 2005
- NPI status
- Active
- Practice phone
- (215) 453-3300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Siesholtz practices at Bux-mont Oncology Hematology Medical Associates in Sellersville, Pennsylvania
Dr. Siesholtz's primary practice is Bux-mont Oncology Hematology Medical Associates, at 915 Lawn Ave, Sellersville, PA 18960-1551. The practice phone is (215) 453-3300.
- Bux-mont Oncology Hematology Medical Associates915 Lawn Ave, Sellersville, PA 18960-1551Phone(215) 453-3300
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas Siesholtz is affiliated with 1 site of care and 1 medical group
Dr. Siesholtz's primary practice is Bux-mont Oncology Hematology Medical Associates in Sellersville, Pennsylvania. Dmand AI also links Dr. Siesholtz to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Thomas Siesholtz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siesholtz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bux-mont Oncology Hematology Medical Associates | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Thomas Siesholtz is one of 645 hematologists and oncologists in Pennsylvania
Hematology and oncology is Dr. Siesholtz's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Siesholtz is licensed in Pennsylvania.
Specialties and state licenses
- Hematology and oncology, PennsylvaniaPrimary
Hematologists and oncologists near Dr. Siesholtz
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thomas Siesholtz's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Siesholtz's median patient age at 72, with 0% women.
Dr. Siesholtz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Thomas Siesholtz wrote 11 Medicare Part D claims in 2017
In 2017, Dr. Siesholtz wrote 11 Medicare Part D claims. They cover 1 drug, with $317 in total drug cost. In 2016, CMS named 30 claims across 2 drugs.
Dr. Siesholtz's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2017
- 2016
- 2017
- Claims for drugs CMS names
- 2016: 302017: 1163%
Drugs named by CMS: 1 in 2017, 2 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Thomas Siesholtz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas Siesholtz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thomas Siesholtz's NPI number?
Dr. Thomas Siesholtz's NPI number is 1578545349. It was assigned on November 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Siesholtz?
Dr. Thomas Siesholtz is a hematologist and oncologist in Sellersville, Pennsylvania. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Thomas Siesholtz practice?
Dr. Siesholtz practices at 915 Lawn Ave, Sellersville, PA 18960-1551. Dr. Siesholtz's primary practice is Bux-mont Oncology Hematology Medical Associates in Sellersville, Pennsylvania. Dmand AI also links Dr. Siesholtz to 1 medical group.
What is Dr. Thomas Siesholtz's office phone number?
The practice phone on file for Dr. Siesholtz is (215) 453-3300.
What is Dr. Thomas Siesholtz's medical license number?
Dr. Siesholtz holds Pennsylvania license MD022295E.
What drugs does Dr. Thomas Siesholtz prescribe most?
In 2017 Medicare Part D data, Dr. Siesholtz's most prescribed drugs by claims were Valacyclovir.
How long has Dr. Thomas Siesholtz been practicing?
Dr. Siesholtz's NPI was assigned in 2005.
Selling to hematology and oncology practices?
See hematologists and oncologists in Pennsylvania by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card