WILLIAM D ELLIS M.D.
NPI 1790050128
Emergency Medicine in Albuquerque, NM
About William D Ellis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM D ELLIS M.D. (NPI 1790050128) is an individual emergency medicine provider in Albuquerque, New Mexico, licensed in New Mexico (MD2015-0028) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS, is affiliated with Ascension Genesys Hospital, and is a graduate of Wayne State University School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 2
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
William D Ellis M.d. 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 William Ellis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 41 clinicians in this Medicare group
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 43 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Genesys Hospital
Acute Care Hospitals · Grand Blanc, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 87110 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.
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.
ALBUQUERQUE, NM 87110
ALBUQUERQUE, NM 87110
ALBUQUERQUE, NM 87110
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 William Ellis's NPI number?
The NPI number for William Ellis is 1790050128. It was assigned to this individual provider in the NPPES registry on March 19, 2012.
Where is William Ellis located?
William Ellis practices at 8300 Constitution Ave NE Pmg Emergency Medicine, Albuquerque, NM 87110. The listed phone number is (505) 291-2122.
What is William Ellis's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is William Ellis enrolled in Medicare?
Yes. William Ellis 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 William Ellis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Ellis reassigns Medicare benefits to 2 organizations: Emergency Medicine Physicians Of Genesee County, PLLC (Grand Blanc, MI) and Observation Medicine Group PLLC (Grand Blanc, MI). 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 William Ellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Ellis affiliated with any hospitals?
According to CMS data, William Ellis is affiliated with Ascension Genesys Hospital.
When was this NPI record last updated?
The NPPES record for William Ellis was last updated on March 16, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# William D Ellis, M.D. · NPI 1790050128
Emergency Medicine physician in Albuquerque, New Mexico. Individual provider, active in the CMS NPPES registry since March 19, 2012.
## Identity
- **NPI:** 1790050128 (Entity type: Individual)
- **Enumerated:** March 19, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD2015-0028 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 8300 CONSTITUTION AVE NE, PMG EMERGENCY MEDICINE, Albuquerque, NM 87110-7613
- **Phone:** (505) 291-2122 · **Fax:** (505) 291-2979
## 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): Emergency Medicine Physicians Of Genesee County, PLLC (NPI 1275899171, Grand Blanc, MI); Observation Medicine Group PLLC (NPI 1194084111, Grand Blanc, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** March 16, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1790050128) · Data from the CMS NPPES public registry.