MRS. MARTA ELISABETH LEWIS MD
NPI 1700175239
Emergency Medicine in Grants Pass, OR
About Mrs. Marta Elisabeth Lewis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARTA ELISABETH LEWIS MD (NPI 1700175239) is an individual emergency medicine provider in Grants Pass, Oregon, licensed in Oregon (MD166669) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS, is affiliated with Asante Three Rivers Medical Center, and is a graduate of Sanford School Of Medicine Of University Of South Dakota (2011).
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 and accepts Medicare assignment
Mrs. Marta Elisabeth Lewis 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
2Medicare enrollment records show Marta Lewis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grants Pass, OR 97527
- Reassigned Medicare billing, Oregon enrollment
- 207 clinicians in this Medicare group
Medford, OR 97504
- Reassigned Medicare billing, Oregon enrollment
- 267 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 4
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Asante Three Rivers Medical Center
Acute Care Hospitals · Grants Pass, ORAsante Rogue Regional Medical Center
Acute Care Hospitals · Medford, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97527 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.
GRANTS PASS, OR 97527
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 Marta Lewis's NPI number?
The NPI number for Marta Lewis is 1700175239. It was assigned to this individual provider in the NPPES registry on April 5, 2011.
Where is Marta Lewis located?
Marta Lewis practices at 500 SW Ramsey Ave, Grants Pass, OR 97527. The listed phone number is (541) 472-7000.
What is Marta Lewis's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Marta Lewis enrolled in Medicare?
Yes. Marta Lewis 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 Marta Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marta Lewis reassigns Medicare benefits to 2 organizations: Asante Three Rivers Medical Center, LLC (Grants Pass, OR) and Asante (Medford, OR). 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 Marta Lewis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Marta Lewis affiliated with any hospitals?
According to CMS data, Marta Lewis is affiliated with Asante Three Rivers Medical Center and Asante Rogue Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Marta Lewis was last updated on May 29, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Mrs. Marta Elisabeth Lewis, MD · NPI 1700175239
Emergency Medicine physician in Grants Pass, Oregon. Individual provider, active in the CMS NPPES registry since April 5, 2011.
## Identity
- **NPI:** 1700175239 (Entity type: Individual)
- **Enumerated:** April 5, 2011
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD166669 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 500 SW RAMSEY AVE, Grants Pass, OR 97527-5554
- **Phone:** (541) 472-7000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Asante Three Rivers Medical Center, LLC (NPI 1801891809, Grants Pass, OR); Asante (NPI 1770587107, Medford, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Sanford School Of Medicine Of University Of South Dakota, class of 2011
## Record status
- **NPPES last updated:** May 29, 2014
---
Source: [NPI Profile](https://npiprofile.com/npi/1700175239) · Data from the CMS NPPES public registry.