JOHN S MAROUK D.O.
NPI 1427099035
Neurological Surgery in Tulsa, OK
About John S Marouk D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN S MAROUK D.O. (NPI 1427099035) is an individual neurological surgery provider in Tulsa, Oklahoma, licensed in Oklahoma (3038) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Hillcrest Medical Center, and maintains a secondary practice location in Tulsa.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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
John S Marouk 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
2Medicare enrollment records show John Marouk reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tulsa, OK 74114
- Reassigned Medicare billing, Oklahoma enrollment
Tulsa, OK 74136
- Reassigned Medicare billing, Oklahoma enrollment
- 5 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 9
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hillcrest Medical Center
Acute Care Hospitals · Tulsa, OKSaint Francis Hospital, Inc
Acute Care Hospitals · Tulsa, OKHillcrest Hospital South
Acute Care Hospitals · Tulsa, OKOklahoma Surgical Hospital, LLC
Acute Care Hospitals · Tulsa, OKCleveland Area Hospital
Critical Access Hospitals · Cleveland, OKPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 74114 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.
Reported Quality Measures
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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 John Marouk's NPI number?
The NPI number for John Marouk is 1427099035. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is John Marouk located?
John Marouk practices at 2128 S Atlanta Pl, Tulsa, OK 74114. The listed phone number is (918) 583-5131.
What is John Marouk's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is John Marouk enrolled in Medicare?
Yes. John Marouk 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 John Marouk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Marouk reassigns Medicare benefits to 2 organizations: Neurosurgical Specialists Of Tulsa Inc (Tulsa, OK) and Neurological Surgery Inc (Tulsa, OK). 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 John Marouk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Marouk accept?
Health plans from Blue Cross and Blue Shield of Oklahoma, CommunityCare and Mending Health list John Marouk 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 John Marouk affiliated with any hospitals?
According to CMS data, John Marouk is affiliated with Hillcrest Medical Center, Saint Francis Hospital, Inc, Hillcrest Hospital South, Oklahoma Surgical Hospital, LLC and Cleveland Area Hospital.
When was this NPI record last updated?
The NPPES record for John Marouk was last updated on July 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# John S Marouk, D.O. · NPI 1427099035
Neurological Surgery physician in Tulsa, Oklahoma. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1427099035 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Neurological Surgery · taxonomy 207T00000X
- **State license:** 3038 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 2128 S ATLANTA PL, Tulsa, OK 74114-1771
- **Phone:** (918) 583-5131 · **Fax:** (918) 592-0670
## 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): Neurosurgical Specialists Of Tulsa Inc (NPI 1942247788, Tulsa, OK); Neurological Surgery Inc (NPI 1063401180, Tulsa, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Oklahoma State University College Of Osteopathic Medicine, class of 1991
## Record status
- **NPPES last updated:** July 28, 2025
- **Other identifiers:** Other 0005436495 (OK); Other 175215700 (OK); Medicaid 10096350A (OK)
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Source: [NPI Profile](https://npiprofile.com/npi/1427099035) · Data from the CMS NPPES public registry.