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Critical Care (Intensivists)

Lynn M. Keenan, MD

Works at hospitals in Salt Lake City, UT · Utah

Summary

Dr. Lynn M. Keenan, MD is a critical care doctor at 50 N Medical Dr, Salt Lake City, UT 84132. Phone: (801) 581-7818. Accepts Medicare assignment. In 2024, Lynn M. Keenan had 147 Original Medicare patients and 481 services. NPI 1801916457. 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: Critical care doctor (Medicare lists Critical Care (Intensivists))
  • Address: 50 N Medical Dr, Salt Lake City, UT 84132 · Directions (1 more location)
  • Phone: (801) 581‑7818
  • Medicare: Accepts Medicare assignment
  • Hospital: University of Utah Hospital and Clinics
  • Group practice: University of Utah Adult Services (+1 more)
  • Medical school: graduated 1987 (39 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Lynn M. Keenan, 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 Lynn M. Keenan accept Medicare assignment?
Yes. Medicare's clinician data says Lynn M. Keenan 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 Lynn M. Keenan see?
In 2024, CMS data shows 147 Original Medicare patients and 481 services for Lynn M. Keenan. This counts Original Medicare only and measures volume, not quality.
What is Lynn M. Keenan's NPI number?
1801916457. 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 Lynn M. Keenan, 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 patients147
Services billed to Medicare481
Different services or procedures16
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)121 services
  2. 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)110 services
  3. Critical care, first 30-74 minutes (99291)92 services
  4. Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)61 services
  5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)39 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 cholesterol65%
  • Arthritis55%
  • COPD54%
  • Asthma46%
  • Heart failure44%

Hospitals where Lynn M. Keenan works

Medicare's Facility Affiliation Data lists Lynn M. Keenan 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.

Practice locations

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

Group practices

Medicare enrollment lists Lynn M. Keenan as a member of these groups (CMS data updated October 2, 2026).

  • University of Utah Adult Services1,788 clinicians in the group
  • University of Utah Acuity Care Services133 clinicians in the group

Specialties

Find other Critical Care (Intensivists) doctors in Utah →

Other critical care doctors in Salt Lake City

Clinicians with the same Medicare primary specialty in Salt Lake City, UT — not a recommendation.

All critical care doctors in Salt Lake City →

Other clinicians in University of Utah Adult Services

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

Clinician information

CredentialMD
Graduation year1987 (39 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1801916457
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