Medicare Enrolled
Dr. Zachary Williams, M.D.
Hospitalist Physician · Rochester, NY
Practice pattern: Electrophysiology & Cardiac
— Practice combining electrophysiology and cardiac services
Low-engagement
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. Williams 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. Williams
Dr. Zachary Williams is a hospitalist physician in Rochester, NY, with 17 years of NPI registration. Based on federal Medicare data, Dr. Williams performed 3,643 Medicare services across 2,878 unique beneficiaries.
Between the years covered by Open Payments, Dr. Williams received a total of $363 from 5 pharmaceutical and/or device companies across 10 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hospitalist 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. Williams 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.
✓ 17 years in practice
▲ Top 0% volume in NY
$363 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,643
Medicare services
Top 0% in NY for hospitalist physician
2,878
Unique beneficiaries
$43
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~214 Medicare services per year of practice
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. |
519 | $84 | $204 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
335 | $20 | $83 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
333 | $15 | $83 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
332 | $10 | $35 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
280 | $9 | $40 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
278 | $129 | $507 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
267 | $18 | $64 |
| Nuclear stress test with CT scan A nuclear medicine imaging test that evaluates blood flow in the heart muscle at rest and during stress, performed alongside a concurrent CT scan. |
226 | $65 | $288 |
| PET scan of heart muscle blood flow A nuclear medicine imaging test that uses positron emission tomography (PET) to evaluate blood flow within the heart muscle. |
224 | $21 | $302 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
137 | $53 | $136 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
95 | $2 | $13 |
| EKG interpretation and report A standard electrocardiogram test that records the heart's electrical activity using at least 12 leads. The service includes a professional interpretation of the results and a written report. |
67 | $6 | $21 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
53 | $16 | $51 |
| Follow-up ultrasound of heart blood flow, valves and chambers An ultrasound exam that follows up on the heart's blood flow, valves, and chambers. It uses sound waves to create images of the heart's structure and function. |
53 | $5 | $20 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
43 | $18 | $73 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
40 | $13 | $44 |
| Stress echocardiogram An ultrasound of the heart performed while at rest and during exercise or drug-induced stress to evaluate heart function under different conditions. |
37 | $47 | $177 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
33 | $10 | $29 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
30 | $81 | $289 |
| Perflutren lipid microspheres injection Injection of perflutren lipid microspheres, measured per milliliter. |
24 | $34 | $70 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
23 | $50 | $236 |
| Cardiac rhythm monitor evaluation Review and analysis of data recorded by a cardiac rhythm monitoring device to assess heart activity. |
23 | $37 | $83 |
| 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. |
23 | $126 | $264 |
| External shock to heart to regulate heart beat A procedure that delivers an electric shock to the heart from outside the body to restore a normal heart rhythm. |
22 | $67 | $290 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
22 | $47 | $116 |
| Heart muscle strain imaging | 20 | $8 | $56 |
| 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. |
17 | $61 | $117 |
| SPECT/CT scan, single area A nuclear medicine imaging study that combines single-photon emission computed tomography (SPECT) with a concurrent CT scan to create detailed images of a single body area. |
16 | $52 | $139 |
| 2-day continuous ECG with professional review A two-day continuous electrocardiogram recording that includes a review by a healthcare professional. |
16 | $11 | $63 |
| Pacemaker insertion with heart chamber electrodes A surgical procedure to implant a pacemaker device and place electrodes into the upper and lower chambers of the heart to regulate heart rhythm. |
15 | $380 | $1,310 |
| 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. |
15 | $133 | $328 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 13 | $279 | $1,198 |
| Insertion of implantable heart rhythm monitor A small device is placed under the skin to continuously record the heart's electrical activity. This helps detect irregular heart rhythms that may not appear during a standard office visit. |
12 | $66 | $206 |
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. A higher procedure volume generally indicates more experience with that procedure.
33.3% high complexity
23.2% medium
43.5% routine
Industry Payment Transparency
Open Payments through 2024 ↗$363
Total received (2021-2024)
Avg $91/year across 4 years
Top 32% in NY for hospitalist physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
5
Companies
10
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$363 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$286
2023
$33
2022
$26
2021
$18
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Neurocrine Biosciences, Inc.
$152
Boston Scientific Corporation
$65
Novartis Pharmaceuticals Corporation
$35
Siemens Medical Solutions USA, Inc.
$34
Top 3 companies account for 88.0% of 2024 payments
All-time payments by company (2021-2024) ›
Neurocrine Biosciences, Inc.
$152
Boston Scientific Corporation
$91
Novartis Pharmaceuticals Corporation
$68
Siemens Medical Solutions USA, Inc.
$34
Abbott Laboratories
$18
Top 3 companies account for 85.5% of all-time payments
Associated products mentioned in payments ›
Artis Q floor · ENTRESTO · INGREZZA · LEQVIO · LUX-Dx Insertable Cardiac Monitor · MitraClip System · VIGILANT X4 CRT-D
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hospitalist physicians within 10 mi
184
Per 100K population
24.4
County median income
$74,409
Nearest hospital
UNITY SPECIALTY HOSPITAL
1.3 mi
1.3 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. Williams is an electrophysiology & cardiac specialist, with above-average Medicare volume (top 0% in NY), with low-engagement industry engagement, with 17 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. Williams experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Williams performed 519 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Williams receive payments from pharmaceutical companies?
Yes. Dr. Williams received a total of $363 from 5 companies across 10 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Williams's costs compare to other hospitalist physicians in Rochester?
Dr. Williams's average Medicare payment per service is $43. 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. Williams) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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