ISAAC RAY DENNIS D.O.
NPI 1477999514
Hospitalist in Tulsa, OK
About Isaac Ray Dennis D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISAAC RAY DENNIS D.O. (NPI 1477999514) is an individual hospitalist provider in Tulsa, Oklahoma, licensed in Oklahoma (5548) and active in the NPI registry since May 2013. He is enrolled in Medicare PECOS, is affiliated with Saint Francis Hospital, Inc, and is a graduate of Oklahoma State University College Of Osteopathic Medicine (2013).
NPPES Registry Identity
Specialties & Licenses 2
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
Isaac Ray Dennis 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 Reassignment
Medicare enrollment records show Isaac Dennis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tulsa, OK 74136
- Reassigned Medicare billing, Oklahoma enrollment
- 1,144 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Saint Francis Hospital, Inc
Acute Care Hospitals · Tulsa, OKSaint Francis Hospital South, LLC
Acute Care Hospitals · Tulsa, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74133 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.
Referred Medical Equipment & Supplies CMS DME claims 3
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 74133
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 Isaac Dennis's NPI number?
The NPI number for Isaac Dennis is 1477999514. It was assigned to this individual provider in the NPPES registry on May 16, 2013.
Where is Isaac Dennis located?
Isaac Dennis practices at 10501 E 91st St 2nd Floor, Tulsa, OK 74133. The listed phone number is (918) 502-1900.
What is Isaac Dennis's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Isaac Dennis enrolled in Medicare?
Yes. Isaac Dennis 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 organization bills Medicare for Isaac Dennis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Dennis reassigns Medicare benefits to Warren Clinic Inc (Tulsa, OK). The 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 Isaac Dennis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isaac Dennis accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list Isaac Dennis 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 Isaac Dennis affiliated with any hospitals?
According to CMS data, Isaac Dennis is affiliated with Saint Francis Hospital, Inc and Saint Francis Hospital South, LLC.
When was this NPI record last updated?
The NPPES record for Isaac Dennis was last updated on July 31, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Isaac Ray Dennis, D.O. · NPI 1477999514
Hospitalist physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since May 16, 2013.
## Identity
- **NPI:** 1477999514 (Entity type: Individual)
- **Enumerated:** May 16, 2013
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 5548 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 10501 E 91ST ST, 2ND FLOOR, Tulsa, OK 74133-5790
- **Phone:** (918) 502-1900
## 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:** Warren Clinic Inc (NPI 1174582282, Tulsa, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oklahoma State University College Of Osteopathic Medicine, class of 2013
## Record status
- **NPPES last updated:** July 31, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1477999514) · Data from the CMS NPPES public registry.