Dr. Peter Grzesik, DO
What this data tells you about Dr. Grzesik
Dr. Peter Grzesik is an anesthesiology specialist in Worcester, MA, with 12 years of NPI registration. Based on federal Medicare data, Dr. Grzesik performed 274 Medicare services in 2023. These records do not provide a deduplicated patient total.
The Data Coverage level for Dr. Grzesik is 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 — 2023
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 |
|---|---|---|---|
| Arterial line insertion A tube is inserted into an artery through the skin to allow for blood sampling or infusion. |
63 | $34 | $283 |
| Daily hospital management of continuous spinal drug administration This code covers the daily hospital management involved in administering drugs continuously through the spinal canal. It includes the oversight and care required for this specific method of medication delivery. |
40 | $50 | $372 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
39 | $11 | $75 |
| Insertion of non-tunneled central venous catheter A procedure to place a central venous catheter for infusion in patients aged 5 years or older. The catheter is inserted directly into a large vein without being tunneled under the skin. |
25 | $64 | $1,263 |
| Anesthesia for cataract/lens surgery Administration of anesthesia during eye lens surgery. This code covers the anesthetic service provided for the procedure. |
22 | $63 | $1,034 |
| Anesthesia for heart and large blood vessel procedure Administration of anesthesia during surgical procedures involving the heart and major blood vessels. |
22 | $399 | $3,398 |
| Anesthesia for endoscopic procedure on esophagus, stomach, or upper small bowel Administration of anesthesia during an endoscopic procedure involving the esophagus, stomach, or upper small bowel. |
19 | $96 | $1,355 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
16 | $82 | $451 |
| 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. |
15 | $61 | $238 |
| Anesthesia for x-ray of brain, heart, or chest artery Administration of anesthesia during an x-ray procedure involving the arteries of the brain, heart, or chest. |
13 | $254 | $3,106 |
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | — No payments | N/A |
| Disciplinary History | — Not included | N/A |
This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Grzesik is a mixed practice specialist, with above-average Medicare volume (top 25% in MA).
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, 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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