Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Bonnie McGuire Wreschner, MD

Individual provider Emergency Medicine Physician · NPI 1871789834

Dr. Bonnie McGuire Wreschner, MD practises Emergency Medicine in Greenwich, Connecticut. Graduated from New York Medical College in 2007, 19 years ago. Practices with Greenwich Hospital, a 79-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
19
Trained at
New York Medical College
Licensed in
CT
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

5 Perryridge Rd
Greenwich, CT 06830
Phone: (973) 971-7926
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 48258 (CT)

Record details

NPI number1871789834
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 24, 2007
Last updated in NPPESAugust 20, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 2007 (19 years in practice)
Group practice Greenwich Hospital — 79 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients154
Services billed 159 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Greenwich Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 79 clinicians in the practice; 12 are shown here.

Other providers in Greenwich