MARGARET LOU MILLER M.D.
NPI 1396785952
Anesthesiology in Shiprock, NM
About Margaret Lou Miller M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET LOU MILLER M.D. (NPI 1396785952) is an individual anesthesiology provider in Shiprock, New Mexico, licensed in California (G84200) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Margaret Lou Miller M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Margaret Miller reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Shiprock, NM 87420
- Reassigned Medicare billing, Texas enrollment
- 572 clinicians in this Medicare group
Albuquerque, NM 87102
- Reassigned Medicare billing, New Mexico enrollment
- 383 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
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.
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.
SHIPROCK, NM 87420
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 Margaret Miller's NPI number?
The NPI number for Margaret Miller is 1396785952. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is Margaret Miller located?
Margaret Miller practices at Us Hwy 491 North, Shiprock, NM 87420. The listed phone number is (505) 368-6001.
What is Margaret Miller's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Margaret Miller enrolled in Medicare?
Yes. Margaret Miller is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret Miller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Miller reassigns Medicare benefits to 2 organizations: Dhhs, Phs, Naihs, Shiprock Hospital (Shiprock, NM) and Main Street Anesthesia Of New Mexico, LLC (Albuquerque, NM). 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 Margaret Miller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Miller was last updated on April 12, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Margaret Lou Miller, M.D. · NPI 1396785952
Anesthesiology physician in Shiprock, New Mexico. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1396785952 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G84200 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** US HWY 491 NORTH, Shiprock, NM 87420
- **Phone:** (505) 368-6001
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Dhhs, Phs, Naihs, Shiprock Hospital (NPI 1780639971, Shiprock, NM); Main Street Anesthesia Of New Mexico, LLC (NPI 1275010985, Albuquerque, NM) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 12, 2019
- **Other identifiers:** Other 00G842000 (CA); Other 00G842000328 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1396785952) · Data from the CMS NPPES public registry.