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Cardiac Electrophysiology

Nicholas O. Palmeri, MD

Works at hospitals in Castle Rock, CO · Littleton, CO · Parker, CO … · Colorado

Summary

Dr. Nicholas O. Palmeri, MD is a cardiac electrophysiologist at 1000 Southpark Dr, Littleton, CO 80120. Phone: (303) 744-1065. Accepts Medicare assignment. In 2024, Nicholas O. Palmeri had 415 Original Medicare patients and 1,796 services. NPI 1518352632. 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: Cardiac electrophysiologist (Medicare lists Cardiac Electrophysiology)
  • Address: 1000 Southpark Dr, Littleton, CO 80120 · Directions (1 more location)
  • Phone: (303) 744‑1065
  • Medicare: Accepts Medicare assignment
  • Hospitals: AdventHealth Castle Rock, AdventHealth Littleton, AdventHealth Parker and 2 more
  • Group practice: Portercare Adventist Health System
  • Medical school: Columbia University College Of Physicians And Surgeons · graduated 2015 (11 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Nicholas O. Palmeri, 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 Nicholas O. Palmeri accept Medicare assignment?
Yes. Medicare's clinician data says Nicholas O. Palmeri 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 Nicholas O. Palmeri see?
In 2024, CMS data shows 415 Original Medicare patients and 1,796 services for Nicholas O. Palmeri. This counts Original Medicare only and measures volume, not quality.
What is Nicholas O. Palmeri's NPI number?
1518352632. 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 Nicholas O. Palmeri, 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 patients415
Services billed to Medicare1,796
Different services or procedures84
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)154 services
  2. Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)140 services
  3. Evaluation of cardiac rhythm monitor system, remote up to 30 days (93298)139 services
  4. Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)133 services
  5. Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)125 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%
  • Atrial fibrillation66%
  • Ischemic heart disease55%
  • Arthritis47%
  • Heart failure47%

Hospitals where Nicholas O. Palmeri works

Medicare's Facility Affiliation Data lists Nicholas O. Palmeri 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.

  • AdventHealth Castle RockCastle Rock, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060125
  • AdventHealth LittletonLittleton, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060113
  • AdventHealth ParkerParker, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060114
  • AdventHealth PorterDenver, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060064
  • Hca-Healthone dba Swedish Medical CenterEnglewood, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060034

Practice locations

Addresses where Nicholas O. Palmeri is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nicholas O. Palmeri as a member of this group (CMS data updated October 2, 2026).

  • Portercare Adventist Health System774 clinicians in the group

Specialties

Find other Cardiac Electrophysiology doctors in Colorado →

Other cardiac electrophysiologists in Littleton

Clinicians with the same Medicare primary specialty in Littleton, CO — not a recommendation.

All cardiac electrophysiologists in Littleton →

Other clinicians in Portercare Adventist Health System

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

Clinician information

CredentialMD
Medical schoolColumbia University College Of Physicians And Surgeons
Graduation year2015 (11 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1518352632
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