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

Mr. Michael Liam Flaherty, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1528310521

Mr. Michael Liam Flaherty, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in New Haven, Connecticut. Qualified in 2012, 14 years ago. Practices with Medstream Anesthesia PLLC, a 577-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
14
Licensed in
CT
In the registry since
2012
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

1423 Chapel St
New Haven, CT 06511-4411 Not confirmed with CMS for 14 years — call before visiting
Phone: (203) 865-3852
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 074013 (CT)

Record details

NPI number1528310521
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedOctober 15, 2012
Last updated in NPPESOctober 23, 2012

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Medstream Anesthesia Pllc — 577 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients20
Services billed 22 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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 Medstream Anesthesia PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 577 clinicians in the practice; 12 are shown here.

Other providers in New Haven