MRS. MARY ELIZABETH O'BOYLE WILLIS FNP
NPI 1003035148
Nurse Practitioner - Family in Richmond, VA
About Mrs. Mary Elizabeth O'boyle Willis Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARY ELIZABETH O'BOYLE WILLIS FNP (NPI 1003035148) is an individual family provider in Richmond, Virginia, licensed in California (95014800) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in South San Francisco, and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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. Mary Elizabeth O'boyle Willis Fnp 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 Mary Elizabeth Willis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Austin, TX 78705
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Dreem Sleep Clinic PA
- 18 clinicians in this Medicare group
South San Francisco, CA 94080
- Reassigned Medicare billing, California enrollment
- 37 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 23298 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.
RICHMOND, VA 23298
RICHMOND, VA 23298
RICHMOND, VA 23298
RICHMOND, VA 23298
RICHMOND, VA 23298
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 Mary Elizabeth Willis's NPI number?
The NPI number for Mary Elizabeth Willis is 1003035148. It was assigned to this individual provider in the NPPES registry on April 25, 2007.
Where is Mary Elizabeth Willis located?
Mary Elizabeth Willis practices at 1250 E Marshall St Department Of Pediatrics, Richmond, VA 23298. The listed phone number is (804) 628-0189.
What is Mary Elizabeth Willis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Elizabeth Willis enrolled in Medicare?
Yes. Mary Elizabeth 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 Mary Elizabeth Willis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Elizabeth Willis reassigns Medicare benefits to 2 organizations: Dreem Sleep Clinic, P.A. (Austin, TX) and Dreem Sleep Clinic Of California (South San Francisco, CA). 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 Mary Elizabeth Willis'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 Mary Elizabeth Willis was last updated on February 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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. Mary Elizabeth O'boyle Willis, FNP · NPI 1003035148
Family physician in Richmond, Virginia. Individual provider, active in the CMS NPPES registry since April 25, 2007.
## Identity
- **NPI:** 1003035148 (Entity type: Individual)
- **Enumerated:** April 25, 2007
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95014800 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1250 E MARSHALL ST, DEPARTMENT OF PEDIATRICS, Richmond, VA 23298-5051
- **Phone:** (804) 628-0189 · **Fax:** (804) 828-6301
## 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): Dreem Sleep Clinic, P.A. (NPI 1437971611, Austin, TX); Dreem Sleep Clinic Of California (NPI 1750049029, South San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** February 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1003035148) · Data from the CMS NPPES public registry.