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Cardiovascular Disease (Cardiology)

Terrence T. Slattery, MD

Works at hospitals in Omaha, NE · Council Bluffs, IA · Papillion, NE · Nebraska, Iowa

Summary

Dr. Terrence T. Slattery, MD is a cardiologist at 1110 17th St, Onawa, IA 51040. Phone: (712) 423-1457. Accepts Medicare assignment. In 2024, Terrence T. Slattery had 2,058 Original Medicare patients and 3,752 services. NPI 1396826871. 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: 1110 17th St, Onawa, IA 51040 · Directions (10 more locations)
  • Phone: (712) 423‑1457
  • Medicare: Accepts Medicare assignment
  • Hospitals: CHI Health Bergan Mercy, CHI Health Immanuel, CHI Health Lakeside and 2 more
  • Group practice: Alegent Creighton Clinic (+2 more)
  • Medical school: Creighton University School Of Medicine · graduated 2000 (26 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Terrence T. Slattery, 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 Terrence T. Slattery accept Medicare assignment?
Yes. Medicare's clinician data says Terrence T. Slattery 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 Terrence T. Slattery see?
In 2024, CMS data shows 2,058 Original Medicare patients and 3,752 services for Terrence T. Slattery. This counts Original Medicare only and measures volume, not quality.
What is Terrence T. Slattery's NPI number?
1396826871. 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 Terrence T. Slattery, 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 patients2,058
Services billed to Medicare3,752
Different services or procedures58
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)1,022 services
  2. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)581 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)251 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)243 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)170 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%
  • Arthritis55%
  • Ischemic heart disease48%
  • Chronic kidney disease46%
  • Heart failure43%

Hospitals where Terrence T. Slattery works

Medicare's Facility Affiliation Data lists Terrence T. Slattery 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.

  • CHI Health Bergan MercyOmaha, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280060
  • CHI Health ImmanuelOmaha, NE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 280081
  • CHI Health LakesideOmaha, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280130
  • CHI Health Mercy Council BluffsCouncil Bluffs, IA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 160028
  • CHI Health MidlandsPapillion, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280105

Practice locations

Addresses where Terrence T. Slattery is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 11; the Medicare profile lists all.

Group practices

Medicare enrollment lists Terrence T. Slattery as a member of these groups (CMS data updated October 2, 2026).

  • Alegent Creighton Clinic963 clinicians in the group
  • CHI Health Clinic Specialty LLC320 clinicians in the group
  • Franciscan Care Services Inc50 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Iowa →

Other cardiologists in Iowa

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

All cardiologists in Iowa →

Other clinicians in Alegent Creighton Clinic

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

Clinician information

CredentialMD
Medical schoolCreighton University School Of Medicine
Graduation year2000 (26 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1396826871
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