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

MS. Margaret Theresa O'Connor, APRNBC

Individual provider Adult Health Nurse Practitioner · NPI 1922216415

MS. Margaret Theresa O'Connor, APRNBC is a Nurse Practitioner in Boston, Massachusetts. Qualified in 1996, 30 years ago. Practices with Pratt Medical Group Inc, a 277-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts.

Years since qualifying
30
Licensed in
MA
In the registry since
2007
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Practice location Address checks out

750 Washington Street Nemc Gma Box 398
Boston, MA 02111-1526 Not confirmed with CMS for 15 years — call before visiting
Phone: (617) 636-7889
Fax: (617) 636-6403
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence RN 155860 NP (MA)

Record details

NPI number1922216415
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRNBC
Sole proprietorNo
NPI enumeratedMay 18, 2007
Last updated in NPPESMarch 3, 2011

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Pratt Medical Group Inc — 277 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients180
Services billed 264 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Pratt Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 277 clinicians in the practice; 12 are shown here.

Other providers in Boston