Dr. John Brennan, MD
What this data tells you about Dr. Brennan
Dr. John Brennan is a sports medicine physician in East Setauket, NY, with 20 years of NPI registration. Based on federal Medicare data, Dr. Brennan performed 20,431 Medicare services across 2,850 unique beneficiaries.
Between the years covered by Open Payments, Dr. Brennan received a total of $5,553 from 11 pharmaceutical and/or device companies across 57 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in sports medicine (orthopaedic surgery) physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Brennan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Joint lubricant injection (TriVisc) An injection of hyaluronan or a derivative into a joint space. The dose specified is 1 milligram. |
13,900 | $7 | $100 |
| Joint lubricant injection (Durolane) An injection of hyaluronan or its derivative, specifically Durolane, administered directly into a joint space. |
1,560 | $5 | $50 |
| Ultrasound-guided large joint aspiration or injection This procedure uses ultrasound imaging to guide the removal of fluid from or the injection of medication into a large joint. |
986 | $106 | $905 |
| Joint lubricant injection (Synvisc) | 784 | $7 | $39 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
720 | $78 | $375 |
| Injection, methylprednisolone acetate, 40 mg | 706 | $6 | $23 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
346 | $105 | $502 |
| Knee X-ray, 4 or more views An imaging test using X-rays to create multiple pictures of the knee joint from different angles. |
262 | $55 | $244 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
177 | $98 | $510 |
| Shoulder X-ray, 2+ views An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures. |
159 | $36 | $262 |
| Injection, ropivacaine hydrochloride, 1 mg | 120 | $0 | $25 |
| Orthovisc intra-articular injection An injection of hyaluronan or its derivative into a joint space to provide lubrication and cushioning. |
118 | $98 | $453 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
111 | $146 | $790 |
| Hip X-ray, 1 view An X-ray image of the hip joint taken from a single angle to visualize the bones and surrounding structures. |
90 | $30 | $163 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
86 | $36 | $279 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
82 | $63 | $713 |
| Total knee replacement | 32 | $1,268 | $22,815 |
| Pelvis X-ray, 1-2 views An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints. |
20 | $27 | $210 |
| X-ray of upper spine, 2-3 views An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures. |
19 | $38 | $220 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
17 | $45 | $800 |
| Wrist X-ray, minimum 3 views An imaging test using X-rays to capture at least three different angles of the wrist bones and joints. |
17 | $42 | $286 |
| Ankle X-ray, minimum 3 views An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints. |
16 | $36 | $170 |
| MRI of leg joint, without contrast A magnetic resonance imaging scan of a joint in the leg performed without the use of contrast dye. |
15 | $166 | $1,665 |
| Arthroscopic rotator cuff repair A minimally invasive surgery to repair torn shoulder tendons using a small camera and instruments inserted through tiny incisions. |
14 | $1,055 | $20,995 |
| Arthroscopic shoulder debridement A minimally invasive procedure to remove damaged or abnormal tissue from the shoulder joint using a small camera and instruments. |
13 | $72 | $8,535 |
| Arthroscopic shoulder surgery for bone shaving and ligament repair A minimally invasive procedure using a small camera to shave part of the shoulder bone and repair a ligament. |
13 | $169 | $10,000 |
| Elbow X-ray, minimum 3 views An X-ray imaging test of the elbow joint that captures at least three different angles to visualize the bones and surrounding structures. |
13 | $31 | $228 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
12 | $39 | $186 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
12 | $111 | $940 |
| X-ray of hand, minimum of 3 views An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints. |
11 | $42 | $236 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
1.6 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Brennan is a mixed practice specialist, with above-average Medicare volume (top 3% in NY), with low-engagement industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Brennan experienced with joint lubricant injection (trivisc)?
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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