DR. ELIZABETH MASON D.O.
NPI 1922530716
Hospitalist in Tulsa, OK
About Dr. Elizabeth Mason D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ELIZABETH MASON D.O. (NPI 1922530716) is an individual hospitalist provider in Tulsa, Oklahoma, licensed in Oklahoma (6511) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, is affiliated with Ascension St John Medical Center, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 3
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. Elizabeth Mason 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
3Medicare enrollment records show Elizabeth Mason reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tulsa, OK 74104
- Reassigned Medicare billing, Oklahoma enrollment
- 820 clinicians in this Medicare group
Tulsa, OK 74136
- Reassigned Medicare billing, Oklahoma enrollment
- 300 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Oklahoma enrollment
- 284 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 5
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 St John Medical Center
Acute Care Hospitals · Tulsa, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
TULSA, OK 74104
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 Elizabeth Mason's NPI number?
The NPI number for Elizabeth Mason is 1922530716. It was assigned to this individual provider in the NPPES registry on March 30, 2017. The provider is also known as Elizabeth T Mason Do.
Where is Elizabeth Mason located?
Elizabeth Mason practices at 1705 E 19th St Ste 302, Tulsa, OK 74104. The listed phone number is (918) 748-7555.
What is Elizabeth Mason's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Elizabeth Mason enrolled in Medicare?
Yes. Elizabeth Mason 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 Elizabeth Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Mason reassigns Medicare benefits to 3 organizations: St. John Physicians, Inc. (Tulsa, OK), Usacs Observation Medicine Services Of Oklahoma, LLC (Tulsa, OK) and Hospitalist Medicine Physicians Of Texas, PLLC (Humble, 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 Elizabeth Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Elizabeth Mason accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list Elizabeth Mason 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 Elizabeth Mason affiliated with any hospitals?
According to CMS data, Elizabeth Mason is affiliated with Ascension St John Medical Center.
When was this NPI record last updated?
The NPPES record for Elizabeth Mason was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Elizabeth Mason, D.O. · NPI 1922530716
Hospitalist physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since March 30, 2017.
## Identity
- **NPI:** 1922530716 (Entity type: Individual)
- **Enumerated:** March 30, 2017
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 6511 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 1705 E 19TH ST STE 302, Tulsa, OK 74104-5410
- **Phone:** (918) 748-7555 · **Fax:** (918) 403-6352
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): St. John Physicians, Inc. (NPI 1336194406, Tulsa, OK); Usacs Observation Medicine Services Of Oklahoma, LLC (NPI 1326739111, Tulsa, OK); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oklahoma State University College Of Osteopathic Medicine, class of 2017
## Record status
- **NPPES last updated:** June 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1922530716) · Data from the CMS NPPES public registry.