Dr. Marcus F Keep , MD
Neurological Surgery โข Fargo, ND
700 1st Ave S
Fargo, ND 581031802
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. Marcus Keep is listed in NPPES under Neurological Surgery.
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NPI assigned on August 1, 2006; this date does not establish years in practice.
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Published CMS data list 137 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99222 โ Initial hospital care with straightforward or low-level medical decision making: 116 service units.
- 99221 โ Initial hospital care with straightforward or low level of medical decision making, per day: 21 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 64 Medicare Part D prescriptions, including refills, in 2017.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2017. Published rows only; this is not a quality measure.
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Published Part D records, 2017:
- Ibuprofen โ 33 prescription fills, including refills.
- Gabapentin โ 19 prescription fills, including refills.
- Omeprazole โ 12 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2017. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 60% of clinicians listed under Neurological Surgery in Fargo, ND (2024, 14 clinicians with data). Median for this group: 217. Middle half: 123 to 397.
Fewer Medicare Part B services than 65% of clinicians listed under Neurological Surgery in North Dakota (2024, 19 clinicians with data). Median for this group: 202. Middle half: 127 to 465.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 72 in 2020 to 137 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
700 1st Ave S
Fargo, ND 581031802
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 Reading, PA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Sanford Medical Center Fargo. 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
Medical University Of South Carolina College Of Medicine
1988
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
175 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 โ by Provider, 2024.
Medicare-allowed amount
About $15,916 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 โ by Provider and Service, 2024.
Paid by Medicare
About $12,606 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 โ by Provider and Service, 2024.
30-day fills
76 standardized 30-day fills in 2017
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
$830 in 2017
The total cost of these prescriptions in 2017, 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 โ by Provider and Drug, 2017.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 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, โDoes your provider accept Medicare as full payment?โ
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. Keep 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. Keep 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 Fargo and North Dakota
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Neurological Surgery in Fargo, ND (2024, 14 clinicians with data). Median for this group: 217. Middle half: 123 to 397.
Fewer Medicare Part B services than 65% of clinicians listed under Neurological Surgery in North Dakota (2024, 19 clinicians with data). Median for this group: 202. Middle half: 127 to 465.
Medicare-allowed amount
A lower Medicare-allowed amount than 65% of clinicians listed under Neurological Surgery in Fargo, ND (2024, 14 clinicians with data). Median for this group: $32,769. Middle half: $14,406 to $79,175.
A lower Medicare-allowed amount than 70% of clinicians listed under Neurological Surgery in North Dakota (2024, 19 clinicians with data). Median for this group: $28,327. Middle half: $14,909 to $98,991.
Paid by Medicare
A lower Medicare payment amount than 65% of clinicians listed under Neurological Surgery in Fargo, ND (2024, 14 clinicians with data). Median for this group: $25,808. Middle half: $10,484 to $61,440.
A lower Medicare payment amount than 70% of clinicians listed under Neurological Surgery in North Dakota (2024, 19 clinicians with data). Median for this group: $22,570. Middle half: $11,191 to $78,068.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Keep are from 2017.
20 active clinicians are listed under Neurological Surgery with a practice address in Fargo, ND (32 in North Dakota).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Fargo
5% of these 20 clinicians have the CMS telehealth indicator.
75% of these 20 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 increased 90% from 72 in 2020 to 137 in 2024.
- 2020: 72
- 2021: 172
- 2022: 124
- 2023: 89
- 2024: 137
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Medicare-allowed amount
Medicare-allowed amount increased 105% from $7,749 in 2020 to $15,916 in 2024.
- 2020: $7,749
- 2021: $15,275
- 2022: $12,911
- 2023: $10,588
- 2024: $15,916
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Paid by Medicare
Paid by Medicare increased 100% from $6,287 in 2020 to $12,606 in 2024.
- 2020: $6,287
- 2021: $12,220
- 2022: $10,207
- 2023: $8,167
- 2024: $12,606
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 76% from 268 in 2013 to 64 in 2017.
- 2013: 268
- 2014: 233
- 2015: 384
- 2016: 376
- 2017: 64
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30-day fills
30-day fills decreased 74% from 293 in 2013 to 76 in 2017.
- 2013: 293
- 2014: 243
- 2015: 414
- 2016: 448
- 2017: 76
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Part D drug cost
Part D drug cost decreased 89% from $7,482 in 2013 to $830 in 2017.
- 2013: $7,482
- 2014: $5,755
- 2015: $8,587
- 2016: $8,831
- 2017: $830
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2017), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 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 โ by Provider and Service data, 2018โ2024; 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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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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116 | 115 | $394.14 | $123.11 |
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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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21 | 21 | $290.00 | $77.87 |
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 2017.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Ibuprofen | Ibuprofen | 33 | 1,350 | $404.68 | โ |
| Gabapentin | Gabapentin | 19 | 570 | $337.97 | โ |
| Omeprazole | Omeprazole | 12 | 360 | $87.84 | โ |
Source: CMS Part D by Provider and Drug, 2017; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2022-10-07NUCC 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.
NUCC 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.
NUCC 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
I20170419001625
ND
8022902402
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
Sanford Medical Center Fargo
5225 23rd Ave S, Fargo, ND 581047927
Phone: 7014172575
Sanford Medical Center Fargo
1220 Sheyenne St, West Fargo, ND 580782637
Phone: 7012344445
Sanford Medical Center Fargo
801 Broadway N, Fargo, ND 581023641
Phone: 7012342000
Secondary Practice Locations
2494 Bernville Rd, Ste. 200
Reading, PA 19605
Phone: 6103782557
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant - Surgical
Physician Assistant (Certified)
Physician Assistant - Medical
Physician Assistant (Certified)
Psychiatry & Neurology - Neurology
Neurological Surgery
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Psychiatry & Neurology - Neurology
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 700 1ST AVE S, FARGO, ND 581031802 (Tel: 7012344036)
Registered at PO BOX 5074, SIOUX FALLS, SD 571175074
NPI status registered as active in NPPES database
Registered at 2494 BERNVILLE RD, STE. 200, READING, PA 19605 (Tel: 6103782557)
Registered at 2500 BERNVILLE RD, READING, PA 196059453 (Tel: 6103782557)
Recorded as MARCUS KEEP, MD
Neurological Surgery (license number reported to NPPES: PA MD423288)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Neurological Surgery Specialists in Fargo
- Dr. Alexander Drofa, MD
- Dr. Evgueni Kouznetsov, MD
- Dr. Pelagia Kouloumberis, MD
- Dr. John Eickman, MD
- Dr. Gaston Oumarou, MD
- Dr. Tong Yang, MD, PhD
Mailing Address
Po Box 5074
Sioux Falls, SD 571175074