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

Mrs. Martha E O'Brien, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1356437081

Mrs. Martha E O'Brien, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Boston, Massachusetts. Qualified in 1993, 33 years ago. Practices with Pratt Anesthesiology Associates Inc, a 155-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
33
Licensed in
MA
In the registry since
2006
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

50 Staniford St C/o Ma Anesthesia Corp
Boston, MA 02115 Not confirmed with CMS for 13 years — call before visiting
Phone: (781) 341-3966
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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 168563 (MA)

Record details

NPI number1356437081
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedOctober 4, 2006
Last updated in NPPESNovember 28, 2012

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Pratt Anesthesiology Associates Inc — 155 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 patients102
Services billed 104 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

  • Melrosewakefield Healthcare Hospital · Melrose, MA

Colleagues at Pratt Anesthesiology Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 155 clinicians in the practice; 12 are shown here.

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