Medicare Enrolled
Dr. Gregory McMahon, D.O.
Student in an Organized Health Care Education/Training Program · Wynnewood, PA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. McMahon from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. McMahon
Dr. Gregory McMahon is a student in an organized health care education/training program specialist in Wynnewood, PA, with 11 years of NPI registration. Based on federal Medicare data, Dr. McMahon performed 2,773 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. McMahon received a total of $23,317 from 28 pharmaceutical and/or device companies across 189 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. McMahon 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.
✓ 11 years of NPI registration
▲ Top 5% volume in PA
$23,317 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,773
Medicare services
Top 5% in PA for student in an organized health care education/training program
Not available
Unique patients (not deduplicated)
$68
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| 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. |
813 | $95 | $294 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
620 | $2 | $10 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
222 | $49 | $85 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 210 | $133 | $800 |
| 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. |
100 | $122 | $358 |
| Transrectal ultrasound of the pelvis An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures. |
89 | $26 | $250 |
| Cystourethroscopy A diagnostic exam of the bladder and urethra using an endoscope to visually inspect the urinary tract. |
88 | $96 | $600 |
| 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. |
83 | $60 | $213 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
79 | $9 | $66 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
74 | $146 | $316 |
| Subcutaneous or intramuscular chemotherapy injection This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle. |
63 | $29 | $100 |
| Prostate radiation therapy device placement A device is placed in the prostate to facilitate radiation therapy. This procedure involves positioning the device to aid in the delivery of radiation treatment. |
59 | $42 | $284 |
| Injection of biodegradable material next to prostate A procedure involving the injection of a biodegradable substance into the tissue surrounding the prostate gland. |
58 | $131 | $7,500 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
40 | $107 | $215 |
| Electronic assessment of bladder emptying A test that uses electronic monitoring to evaluate how well the bladder empties urine. |
34 | $10 | $168 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
34 | $66 | $117 |
| Ureteral stent insertion via endoscope A flexible tube is inserted into the ureter using an endoscope to keep the passage open and allow urine to flow from the kidney to the bladder. |
23 | $134 | $1,000 |
| Simple insertion of temporary bladder tube A procedure to place a temporary tube into the bladder. This allows for the drainage of urine from the bladder. |
20 | $50 | $149 |
| Implantable tissue marker, each A small marker is implanted into tissue to serve as a reference point for future medical imaging or procedures. |
19 | $221 | $293 |
| Prostate gland biopsy A procedure to remove small samples of tissue from the prostate gland for laboratory examination. |
18 | $109 | $455 |
| Ureteral stent insertion via cystoscopy A tube is placed into the ureter using an endoscope inserted through the bladder. |
15 | $90 | $460 |
| 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 | $149 | $472 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
1.4% high complexity
13.2% medium
85.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$23,317
Total received (2020-2024)
Avg $4,663/year across 5 years
Top 2% in PA for student in an organized health care education/training program
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
28
Companies
189
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$18,449
2023
$3,915
2022
$476
2021
$440
2020
$37
Payments by company (2024)
Janssen Biotech, Inc.
$8,121
Bayer Healthcare Pharmaceuticals Inc.
$3,503
Astellas Pharma US Inc
$2,828
Telix Pharmaceuticals
$1,934
Janssen Scientific Affairs, LLC
$1,165
Dendreon Pharmaceuticals LLC
$268
Teleflex LLC
$131
Novartis Pharmaceuticals Corporation
$110
Tolmar, Inc.
$80
PFIZER INC.
$60
Sumitomo Pharma America, Inc.
$59
Merck Sharp & Dohme LLC
$53
ABBVIE INC.
$47
Medtronic, Inc.
$31
BIOPROTECT MEDICAL, INC.
$22
Tempus AI, Inc
$18
Calyxo, Inc.
$16
Top 3 companies account for 78.3% of 2024 payments
All-time payments by company (2020-2024) ›
Janssen Biotech, Inc.
$11,386
Bayer Healthcare Pharmaceuticals Inc.
$3,652
Astellas Pharma US Inc
$2,872
Telix Pharmaceuticals
$1,954
Janssen Scientific Affairs, LLC
$1,310
Teleflex LLC
$382
Dendreon Pharmaceuticals LLC
$357
Boston Scientific Corporation
$264
Axonics, Inc.
$166
Tolmar, Inc.
$124
Novartis Pharmaceuticals Corporation
$110
PFIZER INC.
$108
COLOPLAST CORP
$98
Myriad Genetic Laboratories, Inc.
$80
Sumitomo Pharma America, Inc.
$59
Merck Sharp & Dohme Corporation
$55
Merck Sharp & Dohme LLC
$53
ABBVIE INC.
$47
UroGen Pharma, Inc.
$47
Verity Pharmaceuticals Inc.
$33
Medtronic, Inc.
$31
ACCORD HEALTHCARE, INC.
$23
BIOPROTECT MEDICAL, INC.
$22
AngioDynamics, Inc.
$21
Tempus AI, Inc
$18
180 Medical, Inc.
$18
Calyxo, Inc.
$16
Daiichi Sankyo Inc.
$13
Top 3 companies account for 76.8% of all-time payments
Associated products mentioned in payments ›
ABRE · AMS · Axonics · BIOPROTECT BALLOON IMPLANT SYSTEM · BOTOX · CAMCEVI · CVAC ASPIRATION SYSTEM · ELIGARD · ERLEADA · Enhertu · GENERAL ERECTILE DYSFUNCTION · ILLUCCIX · JELMYTO · KEYTRUDA · LithoVue · NANOKNIFE · Nubeqa · ORGOVYX · PLUVICTO · PROLARIS · PROVENGE · Prolaris · ReTrace · Rezum Generator · SOLESTA · SpaceOAR VUE System - 10mL · Trelstar · UROLIFT · UroLift System · XTANDI · Xtandi · rezum Generator
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Student in an organized health care education/training programs in nearby ZIP areas
7,705
County median income
$111,521
Nearest hospital to ZIP centroid (approximate)
MAIN LINE HOSPITAL LANKENAU
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. McMahon is a clinical cardiology specialist, with above-average Medicare volume (top 5% in PA).
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. McMahon experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. McMahon performed 813 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. McMahon receive payments from pharmaceutical companies?
Yes. Dr. McMahon received a total of $23,317 from 28 companies across 189 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. McMahon's costs compare to other student in an organized health care education/training programs in Wynnewood?
Dr. McMahon's average Medicare payment per service is $68. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. McMahon) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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