Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Christopher M Davison, MD

Individual provider Emergency Medicine Physician · NPI 1225051857

Christopher M Davison, MD practises Emergency Medicine in Greenwich, Connecticut. Qualified in 2000, 26 years ago. Practices with Greenwich Hospital, a 79-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
26
Licensed in
CT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5 Perryridge Rd Emergency Dept
Greenwich, CT 06830-4608 Not confirmed with CMS for 19 years — call before visiting
Phone: (203) 863-3637
Fax: (203) 863-3821
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 041247 (CT)

Record details

NPI number1225051857
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 25, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2000 (26 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 patients12
Services billed 13 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