Quick answers
- Does Kevin R. Grierson accept Medicare assignment?
- Yes. Medicare's clinician data says Kevin R. Grierson 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 Kevin R. Grierson see?
- In 2024, CMS data shows 715 Original Medicare patients and 2,613 services for Kevin R. Grierson. This counts Original Medicare only and measures volume, not quality.
- What is Kevin R. Grierson's NPI number?
- 1154770048. 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 Kevin R. Grierson, 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 | 715 |
|---|---|
| Services billed to Medicare | 2,613 |
| Different services or procedures | 101 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Removal of fingernails or toenails, 6 or more nails (11721)636 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)490 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)214 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)145 services
- Removal of noncancer thickened skin growth, 1 growth (11055)111 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%
- Arthritis58%
- Diabetes34%
- Ischemic heart disease34%
- Chronic kidney disease27%
Hospitals where Kevin R. Grierson works
Medicare's Facility Affiliation Data lists Kevin R. Grierson 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.
- Adventist Health ClearlakeClearlake, CA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 051317
- Healdsburg HospitalHealdsburg, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051321
- Petaluma Valley HospitalPetaluma, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 050136
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050174
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050090
Practice locations
Addresses where Kevin R. Grierson is enrolled with Medicare (CMS data updated October 2, 2026).
- 108 Lynch Creek Way, Suite 3Petaluma, CA 94954 (707) 763‑7403
- 1162 Montgomery Dr, Suite 300Santa Rosa, CA 95405 (707) 890‑4250
Group practices
Medicare enrollment lists Kevin R. Grierson as a member of this group (CMS data updated October 2, 2026).
- Providence Medical Foundation1,466 clinicians in the group
Specialties
- Podiatryprimary
Other podiatrists in Petaluma
Clinicians with the same Medicare primary specialty in Petaluma, CA — not a recommendation.
Other clinicians in Providence Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DPM |
|---|---|
| Podiatric medical school | California School Of Podiatric Medicine |
| Graduation year | 2016 (10 years since podiatric medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1154770048 |
| 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