Dr. Stephen Zonca, M.D.
What this data tells you about Dr. Zonca
Dr. Stephen Zonca is a vascular surgery specialist in Muskegon, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Zonca performed 449 Medicare services across 366 unique beneficiaries.
Between the years covered by Open Payments, Dr. Zonca received a total of $2,071 from 17 pharmaceutical and/or device companies across 46 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in vascular surgery. 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. Zonca 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 |
|---|---|---|---|
| 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. |
102 | $60 | $246 |
| Destruction of precancerous skin growths, 2-14 This procedure involves the removal or destruction of two to fourteen precancerous skin lesions. It is performed to eliminate abnormal skin cells that have the potential to develop into cancer. |
73 | $5 | $19 |
| 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. |
51 | $78 | $304 |
| Destruction of precancerous skin growth, 1 Removal of a single precancerous skin growth. This procedure destroys abnormal skin cells to prevent them from developing into cancer. |
49 | $36 | $184 |
| Intermediate wound repair, 2.6-7.5 cm A medical procedure to close a wound on the scalp, underarms, trunk, arms, or legs that measures between 2.6 and 7.5 centimeters. This type of repair involves cleaning the wound and stitching it closed to promote healing. |
22 | $173 | $835 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
21 | $61 | $263 |
| Surgical removal of facial skin cancer, 1.1-2.0 cm This procedure involves the surgical excision of a cancerous skin growth located on the face, ears, eyelids, nose, lips, or mouth. The size of the removed tissue is between 1.1 and 2.0 centimeters. |
20 | $111 | $736 |
| Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm | 19 | $236 | $872 |
| 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. |
19 | $91 | $347 |
| Skin and tissue removal, 20 sq cm or less This procedure involves the surgical excision of skin and underlying tissue from an area measuring 20 square centimeters or smaller. |
17 | $46 | $163 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
17 | $38 | $104 |
| Punch biopsy of first skin growth A small, circular piece of skin is removed from a skin growth using a circular blade. The sample is then sent to a laboratory for examination. |
15 | $68 | $351 |
| Intermediate wound repair, face or mouth, 2.5 cm or less A medical procedure to close a wound on the face, ears, eyelids, nose, lips, or mouth that is 2.5 centimeters or smaller. This type of repair involves more than simple closure but is less complex than a major repair. |
13 | $179 | $786 |
| Intermediate wound repair, 2.5 cm or less This procedure involves stitching a wound on the scalp, underarms, trunk, arms, or legs that is 2.5 centimeters or smaller. It includes cleaning the wound and closing it with sutures to promote healing. |
11 | $181 | $731 |
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
4.4 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. Zonca is a clinical cardiology specialist, with above-average Medicare volume (top 20% in MI), 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. Zonca experienced with office visit, established patient (20-29 min)?
Does Dr. Zonca receive payments from pharmaceutical companies?
How do Dr. Zonca's costs compare to other vascular surgerists in Muskegon?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology