DR. GRANT MICHAEL WARMOUTH MD
NPI 1376757344
Psychiatry & Neurology - Clinical Neurophysiology in Reno, NV
About Dr. Grant Michael Warmouth Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRANT MICHAEL WARMOUTH MD (NPI 1376757344) is an individual clinical neurophysiology provider in Reno, Nevada, licensed in Colorado (DR.0051735) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS, is affiliated with Methodist Hospital For Surgery, and maintains a secondary practice location in Cheyenne.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
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
Dr. Grant Michael Warmouth Md 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 Reassignment
Medicare enrollment records show Grant Warmouth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Cheyenne, WY 82001
- Reassigned Medicare billing, Nevada enrollment
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Methodist Hospital For Surgery
Acute Care Hospitals · Addison, TXMedicare 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.
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 Warmouth's NPI number?
The NPI number for Grant Warmouth is 1376757344. It was assigned to this individual provider in the NPPES registry on May 9, 2007.
Where is Grant Warmouth located?
Grant Warmouth practices at 13377 Travertine Ln, Reno, NV 89511. The listed phone number is (303) 776-5298.
What is Grant Warmouth's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Clinical Neurophysiology, with taxonomy code 2084N0600X.
Is Grant Warmouth enrolled in Medicare?
Yes. Grant Warmouth 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 organization bills Medicare for Grant Warmouth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Warmouth reassigns Medicare benefits to Rocky Mountain Neurodiagnostics, LLC (Cheyenne, WY). The 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 Warmouth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grant Warmouth accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Grant Warmouth as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Grant Warmouth affiliated with any hospitals?
According to CMS data, Grant Warmouth is affiliated with Methodist Hospital For Surgery.
When was this NPI record last updated?
The NPPES record for Grant Warmouth was last updated on August 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Grant Michael Warmouth, MD · NPI 1376757344
Clinical Neurophysiology physician in Reno, Nevada. Individual provider, active in the CMS NPPES registry since May 9, 2007.
## Identity
- **NPI:** 1376757344 (Entity type: Individual)
- **Enumerated:** May 9, 2007
- **Primary specialty:** Psychiatry & Neurology - Clinical Neurophysiology · taxonomy 2084N0600X
- **State license:** DR.0051735 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 13377 TRAVERTINE LN, Reno, NV 89511-5946
- **Phone:** (303) 776-5298
## 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:** Rocky Mountain Neurodiagnostics, LLC (NPI 1659640381, Cheyenne, WY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** August 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1376757344) · Data from the CMS NPPES public registry.