Dr. Gary C Dennis , MD
Neurological Surgery • Plano, TX
7150 Preston Rd, Bldg 3, Suite 300
Plano, TX 750243279
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. Gary Dennis is listed in NPPES under Neurological Surgery.
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NPI assigned on September 6, 2006; this date does not establish years in practice.
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Published CMS data list 48 Original Medicare Part B services in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Published rows only; this is not a quality measure.
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Published Part B service records, 2018:
- 99214 — Established patient outpatient office visit: 19 service units.
- 99213 — Established patient outpatient office visit: 16 service units.
- 99223 — Initial hospital care with moderate level of medical decision making: 13 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2017 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2018). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 11 Medicare Part D prescriptions, including refills, in 2019.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019. Published rows only; this is not a quality measure.
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Published Part D records, 2019:
- Gabapentin — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 146 in 2017 to 48 in 2018.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2018.
Practice Location & Contact Primary Location
7150 Preston Rd
Bldg 3, Suite 300
Plano, TX 750243279
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $5,617 in 2018
The total amount Medicare approved for these services in 2018. 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, 2018.
Paid by Medicare
About $4,099 in 2018
The part of the Medicare-allowed amount that Medicare itself paid in 2018, 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, 2018.
30-day fills
19 standardized 30-day fills in 2019
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
$141 in 2019
The total cost of these prescriptions in 2019, 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, 2019.
Open Payments general payments, program year 2019
All general payments: $300.50 across 5 records.
By nature of payment
- Food and Beverage: $300.50 across 5 records.
Reporting-company totals
- Amgen Inc.: $261.12 across 4 records.
- Alphatec Spine, Inc: $39.38 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 2019 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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.
Compared with the same specialty in Plano and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Dennis are from 2018.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Dennis are from 2019.
21 active clinicians are listed under Neurological Surgery with a practice address in Plano, TX (669 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Plano
19% of these 21 clinicians have the CMS telehealth indicator.
57.1% of these 21 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 67% from 146 in 2017 to 48 in 2018.
- 2017: 146
- 2018: 48
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Medicare-allowed amount
Medicare-allowed amount decreased 71% from $19,119 in 2017 to $5,617 in 2018.
- 2017: $19,119
- 2018: $5,617
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Paid by Medicare
Paid by Medicare decreased 72% from $14,596 in 2017 to $4,099 in 2018.
- 2017: $14,596
- 2018: $4,099
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 89% from 101 in 2015 to 11 in 2019.
- 2015: 101
- 2016: 52
- 2017: 78
- 2018: 26
- 2019: 11
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30-day fills
30-day fills decreased 82% from 107 in 2015 to 19 in 2019.
- 2015: 107
- 2016: 53
- 2017: 102
- 2018: 45
- 2019: 19
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Part D drug cost
Part D drug cost decreased 95% from $2,965 in 2015 to $141 in 2019.
- 2015: $2,965
- 2016: $764
- 2017: $1,526
- 2018: $257
- 2019: $141
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Physician & Other Practitioners (2018), CMS Medicare Part D Prescribers (2019), CMS Open Payments (2019), 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 2019 (payments made January 1 – December 31, 2019): fewer than 11 records totaling $300.50.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amgen Inc. |
Food and Beverage
In-kind items and services
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Aimovig | General | $122.07 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $113.41 |
| Alphatec Spine, Inc |
Food and Beverage
In-kind items and services
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IdentiTi | General | $39.38 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $20.66 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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Prolia | General | $4.98 |
Source: CMS Open Payments, program year 2019, 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 2016–2017 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, 2017–2018; 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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19 | 13 | $284.84 | $103.44 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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16 | 12 | $172.06 | $69.28 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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13 | 13 | $561.08 | $195.62 |
Source: CMS Part B by Provider and Service, 2018; 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 2019.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 11 | 540 | $141.19 | — |
Source: CMS Part D by Provider and Drug, 2019; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
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
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Neurological Surgery
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 7150 PRESTON RD, BLDG 3, SUITE 300, PLANO, TX 750243279 (Tel: 2147059599)
Registered at PO BOX 6020, FRISCO, TX 750350225 (Tel: 9723779200)
Recorded as GARY DENNIS, M.D.
Neurological Surgery (license number reported to NPPES: DC MD14313)
NPI status registered as active in NPPES database
Registered at 4461 COIT RD, SUITE 405, FRISCO, TX 750350521 (Tel: 9723779200)
Registered at 4461 COIT RD, SUITE 405, FRISCO, TX 750350521 (Tel: 9723779200)
Recorded as GARY DENNIS, M.D.
Neurological Surgery (license number reported to NPPES: TX F5887)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Neurological Surgery Specialists in Plano
- Dr. Jeffrey Cattorini, MD
- Dr. Thomas Kosztowski, MD
- Dr. Walter Loyola, MD
- Dr. John Tompkins, MD
- Dr. Suraj Sulhan, MD
- Dr. Rebecca Roberts, MD
Mailing Address
Po Box 6020
Frisco, TX 750350225
Phone: 9723779200