Quick answers
- Does Karl A. Kirby accept Medicare assignment?
- Yes. Medicare's clinician data says Karl A. Kirby 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 Karl A. Kirby see?
- In 2024, CMS data shows 161 Original Medicare patients and 613 services for Karl A. Kirby. This counts Original Medicare only and measures volume, not quality.
- What is Karl A. Kirby's NPI number?
- 1912955402. 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 Karl A. Kirby, 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 patients | 161 |
|---|---|
| Services billed to Medicare | 613 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)100 services
- 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)97 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)62 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)38 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)33 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 pressure72%
- High cholesterol60%
- Arthritis41%
- Chronic kidney disease35%
- Diabetes34%
- Ischemic heart disease30%
Hospitals where Karl A. Kirby works
Medicare's Facility Affiliation Data lists Karl A. Kirby 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.
- St Mark's HospitalSalt Lake City, UT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 460047
Practice locations
Addresses where Karl A. Kirby is enrolled with Medicare (CMS data updated October 2, 2026).
- 1250 E 3900, Suite 260Salt Lake City, UT 84124 (801) 265‑2000
Group practices
Medicare enrollment lists Karl A. Kirby as a member of this group (CMS data updated October 2, 2026).
- Utah Healthcare Institute Inc13 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Salt Lake City
Clinicians with the same Medicare primary specialty in Salt Lake City, UT — not a recommendation.
Other clinicians in Utah Healthcare Institute Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912955402 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians