JOHN E STEWART MD
NPI 1083715007
Hospitalist in Reno, NV
About John E Stewart Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN E STEWART MD (NPI 1083715007) is an individual hospitalist provider in Reno, Nevada, licensed in Nevada (19528) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Saint Mary's Regional Medical Center, and maintains a secondary practice location in South San Francisco.
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
John E Stewart 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 Reassignments
7Medicare enrollment records show John Stewart reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Reno, NV 89503
- Reassigned Medicare billing, Nevada enrollment
- 27 clinicians in this Medicare group
Reno, NV 89503
- Reassigned Medicare billing, Nevada enrollment
- 58 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Hayward, CA 94545
- Reassigned Medicare billing, California enrollment
- 160 clinicians in this Medicare group
Daly City, CA 94015
- Reassigned Medicare billing, California enrollment
- 20 clinicians in this Medicare group
Greensboro, NC 27401
- Reassigned Medicare billing, North Carolina enrollment
- 254 clinicians in this Medicare group
Rocky Mount, NC 27804
- Reassigned Medicare billing, North Carolina enrollment
- 393 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 2
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.
Saint Mary's Regional Medical Center
Acute Care Hospitals · Reno, NVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 89503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Reported Quality Measures
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.
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 John Stewart's NPI number?
The NPI number for John Stewart is 1083715007. It was assigned to this individual provider in the NPPES registry on September 25, 2006.
Where is John Stewart located?
John Stewart practices at 235 W 6th St, Reno, NV 89503. The listed phone number is (775) 982-7878.
What is John Stewart's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is John Stewart enrolled in Medicare?
Yes. John Stewart 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 John Stewart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Stewart reassigns Medicare benefits to 7 organizations: Jose A Aguirre MD PC Silver State (Reno, NV), Saint Marys Medical Group Inc. (Reno, NV), Permanente Medical Group Inc (Stockton, CA), Nes Western Group, A Professional Corporation (Hayward, CA), Clarkian Hospitalist Corporation (Daly City, CA) and 2 more organizations, listed in the Medicare section above. 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 John Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Stewart accept?
Health plans from Cigna Healthcare list John Stewart 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 John Stewart affiliated with any hospitals?
According to CMS data, John Stewart is affiliated with Saint Mary's Regional Medical Center.
When was this NPI record last updated?
The NPPES record for John Stewart was last updated on December 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# John E Stewart, MD · NPI 1083715007
Hospitalist physician in Reno, Nevada. Individual provider, active in the CMS NPPES registry since September 25, 2006.
## Identity
- **NPI:** 1083715007 (Entity type: Individual)
- **Enumerated:** September 25, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 19528 (Nevada)
- **Sole proprietor:** No
## Practice location
- **Address:** 235 W 6TH ST, Reno, NV 89503-4548
- **Phone:** (775) 982-7878 · **Fax:** (775) 770-3944
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Jose A Aguirre MD PC Silver State (NPI 1427775592, Reno, NV); Saint Marys Medical Group Inc. (NPI 1538424239, Reno, NV); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA); Nes Western Group, A Professional Corporation (NPI 1588249569, Hayward, CA); Clarkian Hospitalist Corporation (NPI 1780353227, Daly City, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** December 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083715007) · Data from the CMS NPPES public registry.