Quick answers
- Does Ryan L. Grandgenett accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan L. Grandgenett 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 Ryan L. Grandgenett see?
- In 2024, CMS data shows 506 Original Medicare patients and 7,898 services for Ryan L. Grandgenett. This counts Original Medicare only and measures volume, not quality.
- What is Ryan L. Grandgenett's NPI number?
- 1316999865. 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 Ryan L. Grandgenett, 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 | 506 |
|---|---|
| Services billed to Medicare | 7,898 |
| Different services or procedures | 140 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)1,440 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)729 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)616 services
- Insertion of needle into vein for collection of blood sample (36415)550 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)438 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 cholesterol74%
- High blood pressure61%
- Arthritis34%
- Diabetes23%
- Depression22%
- Ischemic heart disease18%
Hospitals where Ryan L. Grandgenett works
Medicare's Facility Affiliation Data lists Ryan L. Grandgenett 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.
- Mary Greeley Medical CenterAmes, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160030
Practice locations
Addresses where Ryan L. Grandgenett is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1015 Duff AveAmes, IA 50010 (515) 239‑4400
- 1018 Duff AveAmes, IA 50010 (515) 663‑8621
- 1214 S Grant RdCarroll, IA 51401 (712) 792‑1500
- 1215 Duff AveAmes, IA 50010 (515) 239‑4400
- 1275 SW State StAnkeny, IA 50023 (515) 895‑4560
Group practices
Medicare enrollment lists Ryan L. Grandgenett as a member of these groups (CMS data updated October 2, 2026).
- McFarland Clinic PC363 clinicians in the group
- Tidd-Krafft Occupational and Physical Therapy PA30 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Ames
Clinicians with the same Medicare primary specialty in Ames, IA — not a recommendation.
Other clinicians in McFarland Clinic PC
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) | 1316999865 |
| 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