Quick answers
- Does Brendan Koistinen accept Medicare assignment?
- Yes. Medicare's clinician data says Brendan Koistinen 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 Brendan Koistinen see?
- In 2024, CMS data shows 310 Original Medicare patients and 3,405 services for Brendan Koistinen. This counts Original Medicare only and measures volume, not quality.
- What is Brendan Koistinen's NPI number?
- 1457812422. 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 Brendan Koistinen, 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 | 310 |
|---|---|
| Services billed to Medicare | 3,405 |
| Different services or procedures | 41 |
| 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)416 services
- Destruction of peripheral nerve or branch (64640)206 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)168 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)134 services
- Ultrasonic guidance for needle placement (76942)119 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 cholesterol75%
- Arthritis75%
- High blood pressure73%
- Chronic kidney disease26%
- Diabetes25%
- Ischemic heart disease24%
Practice locations
Addresses where Brendan Koistinen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1325 N Litchfield Rd, Suite 125Goodyear, AZ 85395 (623) 242‑1231
Group practices
Medicare enrollment lists Brendan Koistinen as a member of this group (CMS data updated October 2, 2026).
- VHS Outpatient Clinics Inc208 clinicians in the group
Specialties
- Sports Medicineprimary
- Family Practicealso
Other sports medicine doctors in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Other clinicians in VHS Outpatient Clinics Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457812422 |
| 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
- 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