1. Home
  2. Directory
  3. Connecticut
  4. Hartford
  5. Internal Medicine
  6. NPI Profile

DR. STACY R NERENSTONE M.D.
NPI 1295777613
Internal Medicine - Medical Oncology in Hartford, CT

Active since June 11, 2006PECOS Enrolled
85 RETREAT AVE, HARTFORD, CT 06106(860) 249-6291(860) 728-0151 Get Directions Write a Review

NPPES record last updated: December 11, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Stacy R Nerenstone M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STACY R NERENSTONE M.D. (NPI 1295777613) is an individual medical oncology provider in Hartford, Connecticut, licensed in Connecticut (029763) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295777613
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameDR. STACY R NERENSTONECredential: M.D.
Location Address85 RETREAT AVEHartford, CT 06106-2527
Mailing Address85 Retreat AveHartford, CT 06106-2527 · (860) 249-6291 · Fax (860) 728-0151
Phone(860) 249-6291
Fax(860) 728-0151
Sole ProprietorNo
Enumeration DateJune 11, 2006
Last NPPES UpdateDecember 11, 2013
✔ NPI 1295777613 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in CT · 029763
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
85 RETREAT AVE, Hartford, CT 06106
Open in Google Maps ↗

Other Identifiers 3

Medicare ID-Type Unspecified830000020CT
Medicaid001297630CT
Medicare UPINE56775CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stacy R Nerenstone M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Stacy Nerenstone reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Windham Community Memorial Hospital, Inc.
8.0 mi
General Acute Care Hospital
112 MANSFIELD AVE
Willimantic, CT 06226
  • Reassigned Medicare billing, Connecticut enrollment
  • 302 clinicians in this Medicare group
NPI 1023191467 (860) 456-6752

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06106 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$183.10 typical visit price
range $60.82 – $183.10
Typical copayment $45.77 (range $15.20 – $45.77)
Most-billed visit code 99205
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. PETER K SCHAUER M.D.
Internal Medicine (Medical Oncology)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 249-6291
ANDREW JAMES STRATTON PA-C
Physician Assistant (Medical)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 972-4183
EMILY J ANSTADT LUTZ
Radiology (Radiation Oncology)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (608) 972-2803
SAMANTHA GREEN PHARMD
Pharmacist (Oncology)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 972-4183
PRAGNA KAPADIA D.O.
Internal Medicine (Hematology & Oncology)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 249-6291
MRS. DANIELLE ORFITELLI ROSENBERG APRN
Nurse Practitioner (Adult Health)
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 249-6291
ALANIS MARIEL QUINONES MS, CGC
Genetic Counselor, MS
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (787) 231-1093
ONCOLOGY ASSOCIATES, PC
Specialist
85 RETREAT AVE
HARTFORD, CT 06106
Capitol Planning Region (860) 249-6291

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 Stacy Nerenstone's NPI number?

The NPI number for Stacy Nerenstone is 1295777613. It was assigned to this individual provider in the NPPES registry on June 11, 2006.

Where is Stacy Nerenstone located?

Stacy Nerenstone practices at 85 Retreat Ave, Hartford, CT 06106. The listed phone number is (860) 249-6291.

What is Stacy Nerenstone's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Stacy Nerenstone enrolled in Medicare?

Yes. Stacy Nerenstone is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Stacy Nerenstone's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stacy Nerenstone reassigns Medicare benefits to Windham Community Memorial Hospital, Inc. (Willimantic, CT). The 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 Stacy Nerenstone's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Stacy Nerenstone was last updated on December 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.