Dr. John S Marouk , DO
Neurological Surgery • Tulsa, OK
2128 S Atlanta Pl
Tulsa, OK 741141771
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. John Marouk is listed in NPPES under Neurological Surgery.
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NPI assigned on June 8, 2006; this date does not establish years in practice.
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Published CMS data list 410 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 150 service units.
- 99231 — Subsequent hospital care with straightforward or low level of medical decision making, per day: 79 service units.
- 99204 — New patient outpatient office visit: 54 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 9 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 152 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Gabapentin — 35 prescription fills, including refills.
- Cyclobenzaprine Hcl — 29 prescription fills, including refills.
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) — 28 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 70% of clinicians listed under Neurological Surgery in Tulsa, OK (2024, 16 clinicians with data). Median for this group: 580. Middle half: 409 to 931.
Close to the middle for Medicare Part B services among clinicians listed under Neurological Surgery in Oklahoma (2024, 56 clinicians with data). Median for this group: 435. Middle half: 204 to 816.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 953 in 2020 to 410 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2128 S Atlanta Pl
Tulsa, OK 741141771
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Tulsa, OK. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Neurological Surgery Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Oklahoma State University College Of Osteopathic Medicine
1991
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
189 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $65,498 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $50,800 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
177 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,938 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $188.75 across 4 records.
By nature of payment
- Food and Beverage: $188.75 across 4 records.
Reporting-company totals (3 largest of 4)
- Intrinsic Therapeutics: $83.73 across 1 record.
- Medtronic, Inc.: $40.51 across 1 record.
- Stryker Corporation: $34.16 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
35 years (graduated 1991)
CMS Doctors and Clinicians data list 1991 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Marouk has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Marouk as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Tulsa and Oklahoma
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 70% of clinicians listed under Neurological Surgery in Tulsa, OK (2024, 16 clinicians with data). Median for this group: 580. Middle half: 409 to 931.
Close to the middle for clinicians listed under Neurological Surgery in Oklahoma (2024, 56 clinicians with data). Median for this group: 435. Middle half: 204 to 816.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Neurological Surgery in Tulsa, OK (2024, 16 clinicians with data). Median for this group: $92,763. Middle half: $57,117 to $175,674.
Close to the middle for clinicians listed under Neurological Surgery in Oklahoma (2024, 56 clinicians with data). Median for this group: $65,144. Middle half: $26,540 to $181,814.
Paid by Medicare
A lower Medicare payment amount than 60% of clinicians listed under Neurological Surgery in Tulsa, OK (2024, 16 clinicians with data). Median for this group: $70,541. Middle half: $42,492 to $136,346.
Close to the middle for clinicians listed under Neurological Surgery in Oklahoma (2024, 56 clinicians with data). Median for this group: $50,294. Middle half: $19,630 to $140,147.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Neurological Surgery in Tulsa, OK (2024, 13 clinicians with data). Median for this group: 152. Middle half: 106 to 391.
Close to the middle for clinicians listed under Neurological Surgery in Oklahoma (2024, 48 clinicians with data). Median for this group: 153. Middle half: 70 to 364.
Part D drug cost
Close to the middle for clinicians listed under Neurological Surgery in Tulsa, OK (2024, 13 clinicians with data). Median for this group: $1,767. Middle half: $660 to $4,295.
Close to the middle for clinicians listed under Neurological Surgery in Oklahoma (2024, 48 clinicians with data). Median for this group: $1,731. Middle half: $566 to $4,184.
29 active clinicians are listed under Neurological Surgery with a practice address in Tulsa, OK (99 in Oklahoma).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Tulsa
13.8% of these 29 clinicians have the CMS telehealth indicator.
65.5% of these 29 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 57% from 953 in 2020 to 410 in 2024.
- 2020: 953
- 2021: 693
- 2022: 928
- 2023: 534
- 2024: 410
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Medicare-allowed amount
Medicare-allowed amount decreased 55% from $146,370 in 2020 to $65,498 in 2024.
- 2020: $146,370
- 2021: $111,657
- 2022: $254,508
- 2023: $181,106
- 2024: $65,498
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Paid by Medicare
Paid by Medicare decreased 55% from $113,585 in 2020 to $50,800 in 2024.
- 2020: $113,585
- 2021: $87,672
- 2022: $200,491
- 2023: $139,867
- 2024: $50,800
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 13% from 134 in 2020 to 152 in 2024.
- 2020: 134
- 2021: 213
- 2022: 283
- 2023: 236
- 2024: 152
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30-day fills
30-day fills increased 12% from 158 in 2020 to 177 in 2024.
- 2020: 158
- 2021: 238
- 2022: 306
- 2023: 264
- 2024: 177
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Part D drug cost
Part D drug cost varied from year to year: $2,001 in 2020 and $1,938 in 2024.
- 2020: $2,001
- 2021: $3,355
- 2022: $3,467
- 2023: $3,870
- 2024: $1,938
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $23.27 in 2019 to $188.75 in 2025.
- 2019: $23.27
- 2021: $41.97
- 2022: $2,861.27
- 2023: $438.87
- 2025: $188.75
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $188.75.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Intrinsic Therapeutics |
Food and Beverage
Cash or cash equivalent
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BARRICAID ACD (ANNULAR CLOSURE DEVICE) | General | $83.73 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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MAZOR X SYSTEM | General | $40.51 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
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DIRECT INJECT | General | $34.16 |
| Providence Medical Technology, Inc. |
Food and Beverage
In-kind items and services
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— | General | $30.35 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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150 | 95 | $290.81 | $112.27 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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79 | 36 | $97.78 | $42.37 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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54 | 54 | $375.65 | $144.93 |
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99221
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes
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35 | 35 | $204.11 | $73.48 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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26 | 15 | $141.54 | $67.13 |
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63048
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment
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22 | 14 | $860.91 | $177.00 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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17 | 17 | $297.94 | $115.28 |
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63047
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
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16 | 16 | $5577.81 | $765.62 |
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22612
Fusion of spine in lower back
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11 | 11 | $4486.36 | $1369.34 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 35 | 1,470 | $516.65 | 14 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 29 | 940 | $329.45 | 17 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 28 | 189 | $257.34 | 23 |
| Tizanidine Hcl | Tizanidine Hcl | 26 | 766 | $339.80 | 19 |
| Baclofen | Baclofen | 18 | 720 | $321.15 | — |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 16 | 139 | $173.38 | 15 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-07-28NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEUROSURGERY
I20061218000565
OK
4587663612
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Neurological Surgery Inc
6767 S Yale Ave, Tulsa, OK 741363302
Phone: 9184927587
Secondary Practice Locations
6767 S Yale Ave Ste A
Tulsa, OK 741363399
Phone: 9184927587
Career & Practice History
NPI enumerated June 08, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Neurological Surgery Specialists in Tulsa
- Dr. L. Simmons, DO
- Dr. Donald Schleicher, DO
- Dr. Kevin Klos, MD
- Dr. Eric Sherburn, MD
- Dr. David Malone, MD
- Dr. Steve Gaede, MD
Mailing Address
2128 S Atlanta Pl
Tulsa, OK 741141771
Phone: 9185835131