TIMOTHY GRANT MCNAUGHTON M.D
NPI 1124062039
General Practice in Apple Valley, CA
About Timothy Grant Mcnaughton M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY GRANT MCNAUGHTON M.D (NPI 1124062039) is an individual general practice provider in Apple Valley, California, licensed in California (A78159) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Timothy Grant Mcnaughton M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Timothy Mcnaughton reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Apple Valley, CA 92307
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
Redlands, CA 92373
- Reassigned Medicare billing, California enrollment
- 55 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 27 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
APPLE VALLEY, CA 92307
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 Timothy Mcnaughton's NPI number?
The NPI number for Timothy Mcnaughton is 1124062039. It was assigned to this individual provider in the NPPES registry on June 15, 2006.
Where is Timothy Mcnaughton located?
Timothy Mcnaughton practices at 18300 Highway 18, Apple Valley, CA 92307. The listed phone number is (760) 242-2311.
What is Timothy Mcnaughton's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Timothy Mcnaughton enrolled in Medicare?
Yes. Timothy Mcnaughton is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Timothy Mcnaughton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Mcnaughton reassigns Medicare benefits to 3 organizations: Cep America - California (Apple Valley, CA), Cep America - Auc PC (Redlands, CA) and Medamerica Physician Solutions PC (Walnut Creek, CA). Each 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 Timothy Mcnaughton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Timothy Mcnaughton was last updated on April 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Timothy Grant Mcnaughton, M.D · NPI 1124062039
General Practice physician in Apple Valley, California. Individual provider, active in the CMS NPPES registry since June 15, 2006.
## Identity
- **NPI:** 1124062039 (Entity type: Individual)
- **Enumerated:** June 15, 2006
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** A78159 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 18300 HIGHWAY 18, Apple Valley, CA 92307
- **Phone:** (760) 242-2311
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1104871623, Apple Valley, CA); Cep America - Auc PC (NPI 1366816969, Redlands, CA); Medamerica Physician Solutions PC (NPI 1487237111, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** April 19, 2022
- **Other identifiers:** Medicaid 00A781590 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1124062039) · Data from the CMS NPPES public registry.