Quick answers
- Does Karl M. Larsen accept Medicare assignment?
- Yes. Medicare's clinician data says Karl M. Larsen 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 M. Larsen see?
- In 2024, CMS data shows 392 Original Medicare patients and 1,496 services for Karl M. Larsen. This counts Original Medicare only and measures volume, not quality.
- What is Karl M. Larsen's NPI number?
- 1437131547. 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 M. Larsen, 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 | 392 |
|---|---|
| Services billed to Medicare | 1,496 |
| Different services or procedures | 97 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)316 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)259 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)84 services
- X-ray of hand, minimum of 3 views (73130)72 services
- Injection into tendon or ligament (20550)63 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 cholesterol73%
- Arthritis69%
- High blood pressure61%
- Diabetes21%
- Ischemic heart disease21%
- Depression21%
Hospitals where Karl M. Larsen works
Medicare's Facility Affiliation Data lists Karl M. Larsen 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.
- Centura Health-Penrose St Francis Health ServicesColorado Springs, CO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 060031
- San Luis Valley Regional Medical CenterAlamosa, CO · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 060008
- Spanish Peaks Regional Health CenterWalsenburg, CO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 061316
- Uch-Memorial Health SystemColorado Springs, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060022
Practice locations
Addresses where Karl M. Larsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2446 Research Pkwy, Suite 200Colorado Springs, CO 80920 (719) 623‑1050
Group practices
Medicare enrollment lists Karl M. Larsen as a member of this group (CMS data updated October 2, 2026).
- Orthopedic Centers of Colorado LLC324 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Hand Surgeryalso
Other orthopedic surgeons in Colorado Springs
Clinicians with the same Medicare primary specialty in Colorado Springs, CO — not a recommendation.
Other clinicians in Orthopedic Centers of Colorado LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437131547 |
| 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