Dr. John R Cassidy , MD
Neurological Surgery • Venice, FL
842 Sunset Lake Blvd, Suite 302
Venice, FL 342927552
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. John Cassidy is listed in NPPES under Neurological Surgery.
-
NPI assigned on September 25, 2006; this date does not establish years in practice.
-
Published CMS data list 10,522 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.
-
Published Part B service records, 2024:
- J1010 — Injection, methylprednisolone acetate, 1 mg: 9,287 service units.
- 99213 — Established patient outpatient office visit: 421 service units.
- 99204 — New patient outpatient office visit: 190 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 20 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 253 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.
-
Published Part D records, 2024:
- Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) — 76 prescription fills, including refills.
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 42 prescription fills, including refills.
- Methylprednisolone — 39 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 8 records in the table · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 95% of clinicians listed under Neurological Surgery in Florida (2024, 378 clinicians with data). Median for this group: 297. Middle half: 142 to 588.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 1,750 in 2020 to 10,522 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
842 Sunset Lake Blvd
Suite 302
Venice, FL 342927552
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 4 distinct group names: Empath Therapies Llc; Legacy Healthcare Services Inc; Neurosurgical Associates Cassidy And Guerin, Md, Pa and 1 more. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Virginia Commonwealth University, School Of Medicine
1980
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
512 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 $264,347 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 $209,638 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
256 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
$2,221 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: $81.02 across 3 records.
By nature of payment
- Food and Beverage: $81.02 across 3 records.
Reporting-company totals
- Globus Medical, Inc.: $39.67 across 1 record.
- DJO, LLC: $25.34 across 1 record.
- Ethicon Inc.: $16.01 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
46 years (graduated 1980)
CMS Doctors and Clinicians data list 1980 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, CMS release of October 2, 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.
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, CMS release of October 2, 2026; 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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Cassidy 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. Cassidy 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 Venice and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Neurological Surgery in Florida (2024, 378 clinicians with data). Median for this group: 297. Middle half: 142 to 588.
Too few clinicians listed under Neurological Surgery in Venice have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Neurological Surgery in Florida (2024, 378 clinicians with data). Median for this group: $54,091. Middle half: $17,953 to $131,617.
Too few clinicians listed under Neurological Surgery in Venice have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Neurological Surgery in Florida (2024, 378 clinicians with data). Median for this group: $41,528. Middle half: $13,984 to $102,741.
Too few clinicians listed under Neurological Surgery in Venice have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Neurological Surgery in Florida (2024, 236 clinicians with data). Median for this group: 76. Middle half: 29 to 224.
Too few clinicians listed under Neurological Surgery in Venice have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 70% of clinicians listed under Neurological Surgery in Florida (2024, 236 clinicians with data). Median for this group: $763. Middle half: $250 to $2,420.
Too few clinicians listed under Neurological Surgery in Venice have Medicare Part D data for 2024 to compare.
4 active clinicians are listed under Neurological Surgery with a practice address in Venice, FL (646 in Florida).
Addresses are self-reported to NPPES and may be out of date.
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 increased 501% from 1,750 in 2020 to 10,522 in 2024.
- 2020: 1,750
- 2021: 1,966
- 2022: 1,793
- 2023: 1,488
- 2024: 10,522
-
Medicare-allowed amount
Medicare-allowed amount decreased 28% from $366,080 in 2020 to $264,347 in 2024.
- 2020: $366,080
- 2021: $431,608
- 2022: $379,767
- 2023: $232,662
- 2024: $264,347
-
Paid by Medicare
Paid by Medicare decreased 27% from $288,385 in 2020 to $209,638 in 2024.
- 2020: $288,385
- 2021: $340,148
- 2022: $298,320
- 2023: $181,945
- 2024: $209,638
-
Medicare Part D prescriptions
Medicare Part D prescriptions decreased 30% from 362 in 2020 to 253 in 2024.
- 2020: 362
- 2021: 263
- 2022: 209
- 2023: 228
- 2024: 253
-
30-day fills
30-day fills decreased 31% from 371 in 2020 to 256 in 2024.
- 2020: 371
- 2021: 276
- 2022: 213
- 2023: 228
- 2024: 256
-
Part D drug cost
Part D drug cost decreased 56% from $5,052 in 2020 to $2,221 in 2024.
- 2020: $5,052
- 2021: $3,556
- 2022: $2,678
- 2023: $3,684
- 2024: $2,221
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $14.20 in 2019 to $81.02 in 2025.
- 2019: $14.20
- 2020: $46.20
- 2021: $163.93
- 2023: $20.37
- 2025: $81.02
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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 $81.02.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
|
Senza | General | $39.67 |
| DJO, LLC |
Food and Beverage
In-kind items and services
|
CMF | General | $25.34 |
| Ethicon Inc. |
Food and Beverage
In-kind items and services
|
DERMABOND PRINEO | General | $16.01 |
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 |
|---|---|---|---|---|
|
J1010
Injection, methylprednisolone acetate, 1 mg
|
9,287 | 84 | $0.30 | $0.11 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
421 | 246 | $89.48 | $92.40 |
|
99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
190 | 190 | $167.05 | $171.07 |
|
20552
Injection of trigger points, 1-2 muscles
|
157 | 106 | $55.20 | $53.66 |
|
99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
|
126 | 124 | $133.52 | $133.94 |
|
99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
|
48 | 32 | $50.40 | $51.18 |
|
J1040
Injection, methylprednisolone acetate, 80 mg
|
42 | 32 | $40.00 | $9.66 |
|
20931
Graft of donor bone to spine
|
29 | 28 | $122.06 | $121.00 |
|
22853
Insertion of cage or mesh device to spine bone and disc space during spine fusion
|
29 | 18 | $268.45 | $249.64 |
|
63047
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
|
23 | 23 | $1065.63 | $874.48 |
|
76000
Imaging guidance for procedure, 60 minutes or less
|
23 | 21 | $15.75 | $15.38 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
22 | 22 | $142.98 | $112.11 |
|
63030
Partial removal of spine bone with release of lower spinal cord or nerves and/or removal of disc
|
20 | 20 | $1323.98 | $1260.70 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
20 | 19 | $151.40 | $130.83 |
|
22845
Placement of stabilizing device to front, 2-3 spine bone segments
|
17 | 17 | $758.94 | $778.87 |
|
63056
Release of lower spinal cord and/or nerves, single segment
|
17 | 17 | $1559.02 | $1587.75 |
|
22551
Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, 1 disc
|
16 | 16 | $1778.01 | $1822.20 |
|
22310
Closed treatment of broken spine bone with cast or brace
|
12 | 12 | $305.50 | $311.58 |
|
22633
Fusion of spine in lower back with partial removal of spine bone and disc
|
12 | 12 | $2178.01 | $1789.03 |
|
63012
Partial removal of spine bone with release of lower spinal cord or nerves
|
11 | 11 | $1651.93 | $695.56 |
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 |
|---|---|---|---|---|---|
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 76 | 533 | $959.57 | 56 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 42 | 294 | $516.76 | 28 |
| Methylprednisolone | Methylprednisolone | 39 | 234 | $210.89 | 35 |
| Tramadol Hcl | Tramadol Hcl | 34 | 238 | $127.05 | 21 |
| Prednisone | Prednisone | 19 | 363 | $47.79 | 15 |
| Gabapentin | Gabapentin | 15 | 450 | $98.05 | — |
| Pregabalin | Pregabalin | 15 | 465 | $155.27 | 11 |
| Diclofenac Sodium | Diclofenac Sodium | 13 | 450 | $105.15 | — |
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
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
I20040819000358
FL
4183697063
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, CMS release of October 2, 2026
Legacy Healthcare Services Inc
7374 San Casa Dr, Englewood, FL 342248842
Phone: 9414175064
Neurosurgical Associates Cassidy And Guerin, Md, Pa
842 Sunset Lake Blvd, Venice, FL 342927552
Phone: 9414843404
Empath Therapies Llc
3600 William Penn Way, Venice, FL 342935236
Phone: 9414830746
Nokomis Physical Therapy Llc
109 Laurel Rd E, Nokomis, FL 342755233
Phone: 9413758734
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
NPI enumerated September 25, 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 November 2026.
NPI Administrative Meta
Other Neurological Surgery Specialists in Venice
Healthcare providers in VeniceMailing Address
842 Sunset Lake Blvd, Suite 302
Venice, FL 342927552
Phone: 9414843404