HEMATOLOGY ONCOLOGY ASSOCIATION
NPI 1114994324
Internal Medicine - Hematology & Oncology in Pittsburgh, PA
About Hematology Oncology Association NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HEMATOLOGY ONCOLOGY ASSOCIATION (NPI 1114994324) is a healthcare organization registered as a hematology & oncology in Pittsburgh, Pennsylvania and active in the NPI registry since March 2006. The organization lists James G Terwilliger, Executive Director/vice President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 8
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Hematology Oncology Association is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
79Medicare enrollment records show 79 clinicians reassign Medicare billing to Hematology Oncology Association, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 32 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 5
Nearest to this location (20)
See all 79Pittsburgh, PA 15213
Pittsburgh, PA 15243
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Hematology Oncology Association's NPI number?
The NPI number for Hematology Oncology Association is 1114994324. It was assigned to this organization in the NPPES registry on March 7, 2006.
Where is Hematology Oncology Association located?
Hematology Oncology Association is located at 5115 Centre Ave 3rd Floor, Pittsburgh, PA 15232. The listed phone number is (412) 235-1020.
What is Hematology Oncology Association's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Hematology Oncology Association enrolled in Medicare?
Yes. Hematology Oncology Association is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Hematology Oncology Association?
According to the CMS Revalidation Reassignment List (October 2026 release), 79 clinicians in 5 Medicare specialties reassign their Medicare billing to Hematology Oncology Association. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nurse Practitioner (37), Medical Oncology (32) and Hematology/Oncology (6). Of these, 4 practice at this address and 32 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Hematology Oncology Association was last updated on May 8, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Hematology Oncology Association · NPI 1114994324
Hematology & Oncology organization in Pittsburgh, Pennsylvania. Organization record, active in the CMS NPPES registry since March 7, 2006.
## Identity
- **NPI:** 1114994324 (Entity type: Organization)
- **Enumerated:** March 7, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **Organization subpart:** No
- **Authorized official:** James Terwilliger, EXECUTIVE DIRECTOR/VICE PRESIDENT
## Practice location
- **Address:** 5115 CENTRE AVE, 3RD FLOOR, Pittsburgh, PA 15232-1301
- **Phone:** (412) 235-1020 · **Fax:** (412) 235-1030
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 79 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (37), Medical Oncology (32), Hematology/Oncology (6); 4 practice at this address and 32 within 10 miles; [full list](https://npiprofile.com/npi/1114994324/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 8, 2009
- **Other identifiers:** Other 1014726170028 (PA); Other 1014726170030 (PA); Medicaid 101472617 (PA); and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1114994324) · Data from the CMS NPPES public registry.