Dr. Mark E Linskey , MD
Neurological Surgery โข Orange, CA
101 The City Dr S Bldg 23
Orange, CA 928683201
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Mark Linskey is listed in NPPES under Neurological Surgery.
-
NPI assigned on September 12, 2006; this date does not establish years in practice.
-
Published CMS data list 251 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.
-
Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 82 service units.
- 99214 โ Established patient outpatient office visit: 65 service units.
- 99205 โ New patient outpatient office visit: 34 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 all 7 records in the table ยท Guide: How to read Medicare Part B data
-
Published CMS data list 14 Medicare Part D prescriptions, including refills, in 2023.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. Published rows only; this is not a quality measure.
-
Published Part D records, 2023:
- Dexamethasone โ 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2023. 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
-
Close to the middle for Medicare Part B services among clinicians listed under Neurological Surgery in Orange, CA (2024, 18 clinicians with data). Median for this group: 195. Middle half: 135 to 390.
Close to the middle for Medicare Part B services among clinicians listed under Neurological Surgery in California (2024, 473 clinicians with data). Median for this group: 275. Middle half: 130 to 519.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 250 in 2020 to 251 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
101 The City Dr S Bldg 23
Orange, CA 928683201
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Regents Of The University Of California. 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
Columbia University College Of Physicians And Surgeons
1986
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
140 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 $55,710 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 $43,368 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
14 standardized 30-day fills in 2023
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
$57 in 2023
The total cost of these prescriptions in 2023, 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, 2023.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $27.02 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
40 years (graduated 1986)
CMS Doctors and Clinicians data list 1986 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. Linskey 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. Linskey 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 Orange and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Neurological Surgery in Orange, CA (2024, 18 clinicians with data). Median for this group: 195. Middle half: 135 to 390.
Close to the middle for clinicians listed under Neurological Surgery in California (2024, 473 clinicians with data). Median for this group: 275. Middle half: 130 to 519.
Medicare-allowed amount
A higher Medicare-allowed amount than 70% of clinicians listed under Neurological Surgery in Orange, CA (2024, 18 clinicians with data). Median for this group: $30,139. Middle half: $17,455 to $57,834.
Close to the middle for clinicians listed under Neurological Surgery in California (2024, 473 clinicians with data). Median for this group: $52,612. Middle half: $17,205 to $99,644.
Paid by Medicare
A higher Medicare payment amount than 60% of clinicians listed under Neurological Surgery in Orange, CA (2024, 18 clinicians with data). Median for this group: $23,610. Middle half: $13,764 to $44,489.
Close to the middle for clinicians listed under Neurological Surgery in California (2024, 473 clinicians with data). Median for this group: $40,810. Middle half: $13,563 to $77,465.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Linskey are from 2023.
28 active clinicians are listed under Neurological Surgery with a practice address in Orange, CA (930 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Orange
50% of these 28 clinicians have the CMS telehealth indicator.
82.1% of these 28 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.
-
Medicare Part B services
Medicare Part B services varied from year to year: 250 in 2020 and 251 in 2024.
- 2020: 250
- 2021: 180
- 2022: 207
- 2023: 239
- 2024: 251
-
Medicare-allowed amount
Medicare-allowed amount decreased 21% from $70,797 in 2020 to $55,710 in 2024.
- 2020: $70,797
- 2021: $16,777
- 2022: $47,144
- 2023: $75,559
- 2024: $55,710
-
Paid by Medicare
Paid by Medicare decreased 23% from $56,310 in 2020 to $43,368 in 2024.
- 2020: $56,310
- 2021: $13,018
- 2022: $36,677
- 2023: $60,012
- 2024: $43,368
-
Medicare Part D prescriptions
Medicare Part D prescriptions went from 19 in 2019 to 14 in 2023.
- 2019: 19
- 2020: 19
- 2021: 16
- 2023: 14
-
30-day fills
30-day fills went from 19 in 2019 to 14 in 2023.
- 2019: 19
- 2020: 19
- 2021: 16
- 2023: 14
-
Part D drug cost
Part D drug cost went from $119 in 2019 to $57 in 2023.
- 2019: $119
- 2020: $70
- 2021: $44
- 2023: $57
-
Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2025 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2023), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 โ December 31, 2025): fewer than 11 records totaling $27.02.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Zap Surgical Systems, Inc. |
Food and Beverage
Cash or cash equivalent
|
ZAP-X MV IMAGER | General | $27.02 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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 |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
82 | 71 | $291.00 | $68.50 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
65 | 54 | $430.00 | $101.06 |
|
99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
|
34 | 34 | $797.00 | $188.21 |
|
61800
Computer-assisted radiosurgery application of headframe
|
23 | 18 | $680.00 | $146.61 |
|
99152
Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes
|
21 | 21 | $190.00 | $12.34 |
|
61791
Computer-assisted creation of growth of brainstem
|
13 | 13 | $4853.00 | $1163.57 |
|
61798
Computer-assisted radiosurgery of complex growth of brain, first growth
|
13 | 13 | $6085.00 | $1412.84 |
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 2023.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Dexamethasone | Dexamethasone | 14 | 59 | $56.55 | โ |
Source: CMS Part D by Provider and Drug, 2023; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-03-07NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEUROSURGERY
I20040419001810
CA
6507851326
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
Regents Of The University Of California
101 The City Dr S, Orange, CA 928683201
Phone: 7144567004
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Internal Medicine - Hematology & Oncology
Doctor of Medicine (M.D.)
Obstetrics & Gynecology - Gynecologic Oncology
Doctor of Medicine (M.D.)
Internal Medicine - Medical Oncology
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Internal Medicine - Hematology & Oncology
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 101 THE CITY DR S BLDG 23, ORANGE, CA 928683201 (Tel: 7144568000)
Registered at 200 S MANCHESTER AVE STE 300, ORANGE, CA 928683219 (Tel: 7144562986)
NPI status registered as active in NPPES database
Registered at UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH, ORANGE, CA 92868 (Tel: 7144568978)
Registered at NEUROSURGICAL ASSOCIATE OF IRV, PO BOX 54840, LOS ANGELES, CA 900540840 (Tel: 7144566369)
Recorded as MARK LINSKEY, MD
Neurological Surgery (license number reported to NPPES: CA 000000G74205)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Neurological Surgery Specialists in Orange
- Dr. Jeffrey Dembner, MD
- Dr. Benjamin Uy, MD, PhD
- Dr. Bradley Noblett, MD
- Dr. Hansen Bow, MD
- Dr. Jefferson Chen, MD PHD
- Dr. Michelle Paff, MD
Mailing Address
200 S Manchester Ave Ste 300
Orange, CA 928683219
Phone: 7144562986