Quick answers
- Does Gregory M. Cowan accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory M. Cowan 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 Gregory M. Cowan see?
- In 2024, CMS data shows 1,385 Original Medicare patients and 525,480 services for Gregory M. Cowan. This counts Original Medicare only and measures volume, not quality.
- What is Gregory M. Cowan's NPI number?
- 1164756904. 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 Gregory M. Cowan, 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 | 1,385 |
|---|---|
| Services billed to Medicare | 525,480 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, inclisiran, 1 mg (J1306)420,300 services
- Injection, romosozumab-aqqg, 1 mg (J3111)16,800 services
- Injection, denosumab, 1 mg (J0897)14,100 services
- Injection, omalizumab, 5 mg (J2357)11,730 services
- Injection, mepolizumab, 1 mg (J2182)6,100 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%
- Ischemic heart disease65%
- Arthritis57%
- Osteoporosis29%
- Diabetes27%
Practice locations
Addresses where Gregory M. Cowan is enrolled with Medicare (CMS data updated October 2, 2026).
- 14122 W McDowell Rd, Suite 202Goodyear, AZ 85395 (602) 688‑2248
- 20950 N Tatum Blvd, Suite 270Phoenix, AZ 85050 (480) 991‑1930
- 8541 E Anderson Dr, Suite 104Scottsdale, AZ 85255 (602) 688‑2248
Group practices
Medicare enrollment lists Gregory M. Cowan as a member of this group (CMS data updated October 2, 2026).
- Livwell Health LLC9 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Other clinicians in Livwell Health LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Florida College Of Medicine |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164756904 |
| 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