Quick answers
- Does Aaron W. Guthrie accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron W. Guthrie 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 Aaron W. Guthrie see?
- In 2024, CMS data shows 164 Original Medicare patients and 1,013 services for Aaron W. Guthrie. This counts Original Medicare only and measures volume, not quality.
- What is Aaron W. Guthrie's NPI number?
- 1144361494. 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 Aaron W. Guthrie, 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 | 164 |
|---|---|
| Services billed to Medicare | 1,013 |
| Different services or procedures | 82 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)145 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)78 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)47 services
- Injection of drug or substance under skin or into muscle (96372)39 services
- Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen (87635)28 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 pressure74%
- High cholesterol68%
- Arthritis51%
- Anxiety31%
- Diabetes26%
- Ischemic heart disease26%
Practice locations
Addresses where Aaron W. Guthrie is enrolled with Medicare (CMS data updated October 2, 2026).
- 9556 Manchester RdSaint Louis, MO 63119 (314) 961‑2255
Group practices
Medicare enrollment lists Aaron W. Guthrie as a member of this group (CMS data updated October 2, 2026).
- Total Access Urgent Care PC126 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in Total Access Urgent Care PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144361494 |
| 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