DR. DAVID WILLIS M.D., PH.D.
NPI 1285829085
Anesthesiology in Memphis, TN
About Dr. David Willis M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID WILLIS M.D., PH.D. (NPI 1285829085) is an individual anesthesiology provider in Memphis, Tennessee, licensed in Tennessee (60503) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS, is affiliated with Jackson-madison County General Hospital, and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
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. David Willis M.d., Ph.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
5Medicare enrollment records show David Willis reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Memphis, TN 38103
- Reassigned Medicare billing, Tennessee enrollment
- 421 clinicians in this Medicare group
Jackson, TN 38301
- Reassigned Medicare billing, Tennessee enrollment
- 190 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 clinicians in this Medicare group
Grayling, MI 49738
- Reassigned Medicare billing, Michigan enrollment
- 40 clinicians in this Medicare group
Tacoma, WA 98405
- Reassigned Medicare billing, Washington enrollment
- 1,526 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Jackson-Madison County General Hospital
Acute Care Hospitals · Jackson, TNRegional One Health
Acute Care Hospitals · Memphis, TNMedicare 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.
MEMPHIS, TN 38103
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 David Willis's NPI number?
The NPI number for David Willis is 1285829085. It was assigned to this individual provider in the NPPES registry on September 14, 2007.
Where is David Willis located?
David Willis practices at 877 Jefferson Ave, Memphis, TN 38103. The listed phone number is (901) 448-5893.
What is David Willis's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is David Willis enrolled in Medicare?
Yes. David Willis 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 David Willis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Willis reassigns Medicare benefits to 5 organizations: Ut Regional One Physicians Inc (Memphis, TN), Medical Center Anesthesia Inc. (Jackson, TN), Endeavor Health Medical Group (Evanston, IL), Grayling Anesthesia Associates PC (Grayling, MI) and Franciscan Medical Group (Tacoma, WA). 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 David Willis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Willis accept?
Health plans from Oscar Insurance Company list David Willis 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.
Is David Willis affiliated with any hospitals?
According to CMS data, David Willis is affiliated with Jackson-Madison County General Hospital and Regional One Health.
When was this NPI record last updated?
The NPPES record for David Willis was last updated on March 14, 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. David Willis, M.D., PH.D. · NPI 1285829085
Anesthesiology physician in Memphis, Tennessee. Individual provider, active in the CMS NPPES registry since September 14, 2007.
## Identity
- **NPI:** 1285829085 (Entity type: Individual)
- **Enumerated:** September 14, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 60503 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 877 JEFFERSON AVE, Memphis, TN 38103-2807
- **Phone:** (901) 448-5893
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Ut Regional One Physicians Inc (NPI 1093130585, Memphis, TN); Medical Center Anesthesia Inc. (NPI 1447591730, Jackson, TN); Endeavor Health Medical Group (NPI 1497701882, Evanston, IL); Grayling Anesthesia Associates PC (NPI 1710313648, Grayling, MI); Franciscan Medical Group (NPI 1366539421, Tacoma, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** March 14, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1285829085) · Data from the CMS NPPES public registry.