Quick answers
- Does Kenneth H. Grier accept Medicare assignment?
- Yes. Medicare's clinician data says Kenneth H. Grier 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 Kenneth H. Grier see?
- In 2024, CMS data shows 137 Original Medicare patients and 529 services for Kenneth H. Grier. This counts Original Medicare only and measures volume, not quality.
- What is Kenneth H. Grier's NPI number?
- 1114235744. 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 Kenneth H. Grier, 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 | 137 |
|---|---|
| Services billed to Medicare | 529 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)174 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)161 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)85 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)27 services
- Telephone medical discussion with physician, 11-20 minutes (99442)26 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 pressure70%
- High cholesterol56%
- Arthritis42%
- Diabetes34%
- Anxiety25%
- Depression24%
Practice locations
Addresses where Kenneth H. Grier is enrolled with Medicare (CMS data updated October 2, 2026).
- 18564 Outer Hwy 18, Suite 102Apple Valley, CA 92307 (760) 475‑9080
Specialties
- Family Practiceprimary
Other family doctors in Apple Valley
Clinicians with the same Medicare primary specialty in Apple Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2010 (16 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1114235744 |
| 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