DR. SUMMER D TEWKSBURY MD
NPI 1013138130
Emergency Medicine in Tuba City, AZ
About Dr. Summer D Tewksbury Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SUMMER D TEWKSBURY MD (NPI 1013138130) is an individual emergency medicine provider in Tuba City, Arizona, licensed in Arizona (41591) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with Kaiser Foundation Hospital Westside, and is a graduate of University Of Arizona College Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Dr. Summer D Tewksbury 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 Summer Tewksbury reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Salem, OR 97317
- Reassigned Medicare billing, Oregon and Washington enrollments
- Medicare enrollment name: Kaiser Foundation Health Plan Of The Northwest
- Also billed through NPI 1871848457 (Washington)
- 3,207 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Kaiser Foundation Hospital Westside
Acute Care Hospitals · Hillsboro, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 86045 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TUBA CITY, AZ 86045
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 Summer Tewksbury's NPI number?
The NPI number for Summer Tewksbury is 1013138130. It was assigned to this individual provider in the NPPES registry on May 2, 2007. The provider is also known as Dr. Summer D Stears-Ellis MD.
Where is Summer Tewksbury located?
Summer Tewksbury practices at 167 North Main Street, Tuba City, AZ 86045. The listed phone number is (928) 283-2501.
What is Summer Tewksbury's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Summer Tewksbury enrolled in Medicare?
Yes. Summer Tewksbury 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 Summer Tewksbury's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Summer Tewksbury reassigns Medicare benefits to South Salem Rehabilitation, LLC (Salem, OR). 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 Summer Tewksbury's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Summer Tewksbury affiliated with any hospitals?
According to CMS data, Summer Tewksbury is affiliated with Kaiser Foundation Hospital Westside.
When was this NPI record last updated?
The NPPES record for Summer Tewksbury was last updated on June 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Summer D Tewksbury, MD · NPI 1013138130
Emergency Medicine physician in Tuba City, Arizona. Individual provider, active in the CMS NPPES registry since May 2, 2007.
## Identity
- **NPI:** 1013138130 (Entity type: Individual)
- **Enumerated:** May 2, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 41591 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 167 NORTH MAIN STREET, Tuba City, AZ 86045-0600
- **Phone:** (928) 283-2501
## 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:** South Salem Rehabilitation, LLC (NPI 1215071998, Salem, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Arizona College Of Medicine, class of 2006
## Record status
- **NPPES last updated:** June 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1013138130) · Data from the CMS NPPES public registry.