GRANT MCCULLEN SCHUMAKER MD
NPI 1093418063
Emergency Medicine in Temecula, CA
About Grant Mccullen Schumaker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRANT MCCULLEN SCHUMAKER MD (NPI 1093418063) is an individual emergency medicine provider in Temecula, California, licensed in California (201034) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Grant Mccullen Schumaker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Grant Schumaker reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- 114 clinicians in this Medicare group
Fontana, CA 92336
- Reassigned Medicare billing, California enrollment
- 95 clinicians in this Medicare group
Upland, CA 91786
- Reassigned Medicare billing, California enrollment
- 103 clinicians in this Medicare group
Fullerton, CA 92835
- Reassigned Medicare billing, California enrollment
- 52 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92592 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TEMECULA, CA 92592
TEMECULA, CA 92592
TEMECULA, CA 92592
TEMECULA, CA 92592
TEMECULA, CA 92592
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 Grant Schumaker's NPI number?
The NPI number for Grant Schumaker is 1093418063. It was assigned to this individual provider in the NPPES registry on March 27, 2023.
Where is Grant Schumaker located?
Grant Schumaker practices at 31700 Temecula Pkwy Ste Gme 3, Temecula, CA 92592. The listed phone number is (951) 331-2535.
What is Grant Schumaker's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Grant Schumaker enrolled in Medicare?
Yes. Grant Schumaker is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Grant Schumaker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Schumaker reassigns Medicare benefits to 4 organizations: Corona Regional Emergency Medical Associates Inc (Corona, CA), Mountain View Urgent Care Group, Inc (Fontana, CA), Mountain View Emergency Physicians Medical Group, Inc. (Upland, CA) and St Jude Emergency Medical Group Inc (Fullerton, 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 Grant Schumaker'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 Grant Schumaker was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Grant Mccullen Schumaker, MD · NPI 1093418063
Emergency Medicine physician in Temecula, California. Individual provider, active in the CMS NPPES registry since March 27, 2023.
## Identity
- **NPI:** 1093418063 (Entity type: Individual)
- **Enumerated:** March 27, 2023
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 201034 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 31700 TEMECULA PKWY STE GME 3, Temecula, CA 92592-5896
- **Phone:** (951) 331-2535
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Corona Regional Emergency Medical Associates Inc (NPI 1134629298, Corona, CA); Mountain View Urgent Care Group, Inc (NPI 1023306784, Fontana, CA); Mountain View Emergency Physicians Medical Group, Inc. (NPI 1619923653, Upland, CA); St Jude Emergency Medical Group Inc (NPI 1720190804, Fullerton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** October 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1093418063) · Data from the CMS NPPES public registry.