Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Cardiovascular Disease (Cardiology)

Nicole M. Orr, MD

Works at hospitals in Derby, CT · Boston, MA · Connecticut, Massachusetts

Summary

Dr. Nicole M. Orr, MD is a cardiologist at 65 Walnut St, Wellesley, MA 02481. Phone: (781) 237-3395. Accepts Medicare assignment. In 2024, Nicole M. Orr had 485 Original Medicare patients and 888 services. NPI 1801086939. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Cardiologist (Medicare lists Cardiovascular Disease (Cardiology))
  • Address: 65 Walnut St, Wellesley, MA 02481 · Directions (1 more location)
  • Phone: (781) 237‑3395
  • Medicare: Accepts Medicare assignment
  • Hospitals: Griffin Hospital, Tufts Medical Center
  • Group practice: Cardiovascular Center at Tufts Medical Center Inc
  • Medical school: graduated 2004 (22 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Nicole M. Orr, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Nicole M. Orr accept Medicare assignment?
Yes. Medicare's clinician data says Nicole M. Orr accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Nicole M. Orr see?
In 2024, CMS data shows 485 Original Medicare patients and 888 services for Nicole M. Orr. This counts Original Medicare only and measures volume, not quality.
What is Nicole M. Orr's NPI number?
1801086939. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Nicole M. Orr, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients485
Services billed to Medicare888
Different services or procedures21
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)267 services
  2. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)209 services
  3. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)101 services
  4. Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)100 services
  5. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)79 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease61%
  • Heart failure58%
  • Arthritis53%
  • Chronic kidney disease48%

Hospitals where Nicole M. Orr works

Medicare's Facility Affiliation Data lists Nicole M. Orr at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
  • Tufts Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220116

Practice locations

Addresses where Nicole M. Orr is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nicole M. Orr as a member of this group (CMS data updated October 2, 2026).

  • Cardiovascular Center at Tufts Medical Center Inc97 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Massachusetts →

Other cardiologists in Massachusetts

Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.

All cardiologists in Massachusetts →

Other clinicians in Cardiovascular Center at Tufts Medical Center Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2004 (22 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801086939
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians