Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1518378231 Individual Practitioner Male Practitioner

Dr. Peter Mark Grzesik , DO

Anesthesiology • Worcester, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Peter Grzesik, DO is a certified Anesthesiology practicing in Worcester, MA. With approximately 12 years of clinical experience since graduating from New York College Of Osteo Medicine Of New York Institute Of Technology in 2014, Dr. Grzesik delivers high-quality medical care to the local community at 55 LAKE AVE N.

Dr. Grzesik is affiliated with Umass Memorial Medical Group Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include daily hospital management of continuous spinal drug administration, ultrasonic guidance for blood vessel access, other procedure on nervous system. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

55 Lake Ave N

Worcester, MA 016550002

Telephone 5083343271
Fax 5088565911
Associated Practice Facility / Clinic
🏢 Umass Memorial Medical Center Facility NPI 1679574933

Medicare Profile & Education

Medical School

New York College Of Osteo Medicine Of New York Institute Of Technology

Graduation Year

2014

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Worcester, MA

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
12 Yrs -10.0 yrs vs City Avg
City Avg: 22.0 Yrs
State Avg: 27.4 Yrs
Regional Practice Density
149 Specialists

Practicing in Worcester, MA (2146 Statewide)

Telehealth Adoption Rate
2.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
86.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Grzesik (12 Years) 12 Yrs
Worcester Specialty Average (22.0 Years) 22.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
01996 Daily hospital management of continuous spinal drug administration
48 25 $372.00 $61.55
76937 Ultrasonic guidance for blood vessel access
46 34 $75.00 $13.48
64999 Other procedure on nervous system
38 22 $1370.00 $57.58
36620 Insertion of artery tube for blood sampling or infusion through skin
33 29 $283.00 $42.74
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)
33 30 $1263.00 $81.65
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
29 21 $342.00 $116.58
93312 Ultrasound of heart with probe in esophagus, with report
24 24 $451.00 $103.79
00560 Anesthesia for procedure on heart and large blood vessels
23 23 $3342.39 $479.77
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
21 21 $667.00 $170.12
00142 Anesthesia for lens surgery
15 15 $983.33 $79.50
00567 Anesthesia for heart artery bypass grafting on heart-lung machine
15 15 $5533.33 $834.15

Medical Specialties & State Licenses

CMS Verified: 2021-07-29
Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License MA 287786

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
110126355A (MA)

Hospital & Practice Group Affiliations

Umass Memorial Medical Group Inc

55 Lake Ave N, Worcester, MA 016550002

Phone: 5083341000

Secondary Practice Locations

20 York St

New Haven, CT 065103220

Phone: 2036884242

24 Hospital Ave

Danbury, CT 068106099

Phone: 2037397000

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Ewa Hryniszyn , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003056284

Certified Registered Nurse Anesthetist

NPI 1003137746

Doctor of Medicine (M.D.)

Elizabeth Stewart , CRNA

Nurse Anesthetist, Certified Registered

NPI 1013576388

Certified Registered Nurse Anesthetist

NPI 1013598515

Doctor of Osteopathic Medicine (D.O.)

Megan Bare , RN

Nurse Anesthetist, Certified Registered

NPI 1013648443

Registered Nurse

Marilee Edwards , CRNA

Nurse Anesthetist, Certified Registered

NPI 1013973486

Certified Registered Nurse Anesthetist

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

17 Historical Events
📍
Updated Practice Location July 29, 2021

Registered at 55 LAKE AVE N, WORCESTER, MA 016550002 (Tel: 5083343271)

📍
Updated Business Mailing Address July 29, 2021

Registered at PO BOX 415348, BOSTON, MA 022415348

👤
Provider Name / Credentials Updated July 29, 2021

Recorded as PETER GRZESIK, DO

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 29, 2021

Anesthesiology (License #287786 in MA)

📍
Updated Practice Location May 22, 2020

Registered at 20 YORK ST, NEW HAVEN, CT 065103220 (Tel: 2036884242)

📍
Updated Business Mailing Address May 22, 2020

Registered at 20 YORK ST, NEW HAVEN, CT 065103220 (Tel: 2036884242)

NPI Profile Active July 19, 2017

NPI status registered as active in NPPES database

📍
Updated Practice Location July 19, 2017

Registered at 55 LAKE AVE N, WORCESTER, MA 016550002 (Tel: 5083341000)

📍
Updated Business Mailing Address July 19, 2017

Registered at 55 LAKE AVE N, WORCESTER, MA 016550002

👤
Provider Name / Credentials Updated July 19, 2017

Recorded as PETER GRZESIK, D.O.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 19, 2017

Student in an Organized Health Care Education/Training Program

NPI Profile Active May 15, 2014

NPI status registered as active in NPPES database

📍
Updated Practice Location May 15, 2014

Registered at 24 HOSPITAL AVE, DANBURY, CT 068106099 (Tel: 2037397000)

📍
Updated Business Mailing Address May 15, 2014

Registered at 2812 214TH ST, BAYSIDE, NY 113602643

👤
Provider Name / Credentials Updated May 15, 2014

Recorded as PETER GRZESIK

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 15, 2014

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration May 15, 2014

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. Peter Grzesik. Be the first to share your experience!

Sign in to leave a review for Dr. Peter Grzesik

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1518378231
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 15, 2014
Last Update: July 29, 2021
Sole Proprietor: No

Mailing Address

Po Box 415348

Boston, MA 022415348

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.