1. Home
  2. Directory
  3. California
  4. Apple Valley
  5. Family Medicine
  6. NPI Profile

KENNETH GRIER MD INC
NPI 1972109551
Family Medicine in Apple Valley, CA

Active since December 08, 2020CLIA 05D2210769 · Waiver
18564 US HIGHWAY 18 STE 101-102, APPLE VALLEY, CA 92307(760) 475-9080 Get Directions Write a Review

NPPES record last updated: August 21, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Aug 21, 2023, Dec 8, 2020 (2 updates tracked since 2020).

About Kenneth Grier Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KENNETH GRIER MD INC (NPI 1972109551) is a healthcare organization registered as a family medicine in Apple Valley, California and active in the NPI registry since December 2020. The organization holds a CLIA Waiver certificate valid through January 21, 2027 and lists Kenneth Grier, President, as its authorized official.

NPPES Registry Identity

NPI1972109551
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameKENNETH GRIER MD INC
Location Address18564 US HIGHWAY 18 STE 101-102Apple Valley, CA 92307-2312
Mailing Address12277 Apple Valley Rd # 195Apple Valley, CA 92308-1701
Phone(760) 475-9080
Organization SubpartNo
Authorized OfficialKenneth GrierPresident · (760) 475-9080
Enumeration DateDecember 8, 2020
Last NPPES UpdateAugust 21, 20232 updates tracked since enumeration
NPPES CertifiedAugust 21, 2023
✔ NPI 1972109551 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
18564 US HIGHWAY 18 STE 101-102, Apple Valley, CA 92307
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kenneth Grier Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Kenneth Grier MD Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Kenneth Grier, M.D.
Family Practice
NPI 1114235744
18564 US HIGHWAY 18 STE 101
Apple Valley, CA 92307
(760) 242-7777
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2210769

Kenneth Grier MD Inc · Apple Valley, CA
Active · expires Jan 21, 2027
CLIA Number05D2210769
Laboratory TypePhysician Office
Certificate Effective DateJanuary 22, 2025
Certificate Expiration DateJanuary 21, 2027
Laboratory DirectorKenneth Grier
Laboratory Phone(760) 475-9080
Laboratory LocationKenneth Grier MD Inc18564 Us Highway 18, Suite 101, Apple Valley, CA 92307
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kenneth Grier MD Inc's NPI number?

The NPI number for Kenneth Grier MD Inc is 1972109551. It was assigned to this organization in the NPPES registry on December 8, 2020.

Where is Kenneth Grier MD Inc located?

Kenneth Grier MD Inc is located at 18564 Us Highway 18 Ste 101-102, Apple Valley, CA 92307. The listed phone number is (760) 475-9080.

What is Kenneth Grier MD Inc's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Kenneth Grier MD Inc enrolled in Medicare?

Yes. Kenneth Grier MD Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Kenneth Grier MD Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Kenneth Grier MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Kenneth Grier MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2210769) is associated with this NPI, valid through January 21, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Kenneth Grier MD Inc was last updated on August 21, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.