DR. ROGER LEWIS WALLACE D.O.
NPI 1609838481
Obstetrics & Gynecology - Maternal & Fetal Medicine in Billings, MT
About Dr. Roger Lewis Wallace D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROGER LEWIS WALLACE D.O. (NPI 1609838481) is an individual maternal & fetal medicine provider in Billings, Montana, licensed in Texas (E4746) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (1974).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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. Roger Lewis Wallace D.o. 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
4Medicare enrollment records show Roger Wallace reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pierre, SD 57501
- Reassigned Medicare billing, South Dakota enrollment
- 1,277 clinicians in this Medicare group
Big Spring, TX 79720
- Reassigned Medicare billing, Texas enrollment
- 93 clinicians in this Medicare group
Fort Worth, TX 76104
- Reassigned Medicare billing, Texas enrollment
- 985 clinicians in this Medicare group
Corpus Christi, TX 78411
- Reassigned Medicare billing, Texas enrollment
- 510 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 59101 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.
BILLINGS, MT 59101
BILLINGS, MT 59101
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 Roger Wallace's NPI number?
The NPI number for Roger Wallace is 1609838481. It was assigned to this individual provider in the NPPES registry on April 5, 2006.
Where is Roger Wallace located?
Roger Wallace practices at 2900 12th Ave N Suite 130W, Billings, MT 59101. The listed phone number is (406) 237-8400.
What is Roger Wallace's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Roger Wallace enrolled in Medicare?
Yes. Roger Wallace 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 Roger Wallace's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roger Wallace reassigns Medicare benefits to 4 organizations: Avera Mckennan (Pierre, SD), Big Bend Medical Group (Big Spring, TX), Acclaim Physician Group, Inc (Fort Worth, TX) and Children's Physician Services Of South Texas (Corpus Christi, TX). 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 Roger Wallace's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Roger Wallace 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 7 other insurers list Roger Wallace 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.
When was this NPI record last updated?
The NPPES record for Roger Wallace was last updated on February 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Roger Lewis Wallace, D.O. · NPI 1609838481
Maternal & Fetal Medicine physician in Billings, Montana. Individual provider, active in the CMS NPPES registry since April 5, 2006.
## Identity
- **NPI:** 1609838481 (Entity type: Individual)
- **Enumerated:** April 5, 2006
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** E4746 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 2900 12TH AVE N, SUITE 130W, Billings, MT 59101-7506
- **Phone:** (406) 237-8400
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Avera Mckennan (NPI 1780829283, Pierre, SD); Big Bend Medical Group (NPI 1811973282, Big Spring, TX); Acclaim Physician Group, Inc (NPI 1780076562, Fort Worth, TX); Children's Physician Services Of South Texas (NPI 1568658227, Corpus Christi, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1974
## Record status
- **NPPES last updated:** February 15, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1609838481) · Data from the CMS NPPES public registry.