PROGRESSIVE HEMATOLOGY AND ONCOLOGY PLLC
NPI 1114271673
Internal Medicine - Hematology & Oncology in Brooklyn, NY
About Progressive Hematology And Oncology Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PROGRESSIVE HEMATOLOGY AND ONCOLOGY PLLC (NPI 1114271673) is a healthcare organization registered as a hematology & oncology in Brooklyn, New York and active in the NPI registry since November 2012. The organization maintains 2 additional practice locations and lists Mark Sonnenschine, Chairman, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Progressive Hematology And Oncology Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
4Medicare enrollment records show 4 clinicians reassign Medicare billing to Progressive Hematology And Oncology PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (4)
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 Progressive Hematology And Oncology PLLC's NPI number?
The NPI number for Progressive Hematology And Oncology PLLC is 1114271673. It was assigned to this organization in the NPPES registry on November 6, 2012.
Where is Progressive Hematology And Oncology PLLC located?
Progressive Hematology And Oncology PLLC is located at 6201 15th Ave Ste 306, Brooklyn, NY 11219. The listed phone number is (718) 775-2700.
What is Progressive Hematology And Oncology PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Progressive Hematology And Oncology PLLC enrolled in Medicare?
Yes. Progressive Hematology And Oncology PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Progressive Hematology And Oncology PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Progressive Hematology And Oncology PLLC. 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 (3) and Hematology/Oncology (1). Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Progressive Hematology And Oncology PLLC accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness, Ambetter from Buckeye Health Plan and Ambetter from Louisiana Healthcare Connections and 22 other insurers list Progressive Hematology And Oncology PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Progressive Hematology And Oncology PLLC was last updated on August 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Progressive Hematology And Oncology Pllc · NPI 1114271673
Hematology & Oncology organization in Brooklyn, New York. Organization record, active in the CMS NPPES registry since November 6, 2012.
## Identity
- **NPI:** 1114271673 (Entity type: Organization)
- **Enumerated:** November 6, 2012
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **Organization subpart:** No
- **Authorized official:** Mark Sonnenschine, CHAIRMAN
## Practice location
- **Address:** 6201 15TH AVE STE 306, Brooklyn, NY 11219-5411
- **Phone:** (718) 775-2700
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 4 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (3), Hematology/Oncology (1); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 13, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1114271673) · Data from the CMS NPPES public registry.