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

Individual provider Certified Registered Nurse Anesthetist · NPI 1013924745

MS. Margaret Diferdinand, CRNA is a Certified Registered Nurse Anesthetist in Philadelphia, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
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

111 S 11th St Ste 8490
Philadelphia, PA 19107-4824 Not confirmed with CMS for 12 years — call before visiting
Phone: (215) 955-6161
Fax: (215) 923-5507
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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 RN524090L (PA)

Record details

NPI number1013924745
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedAugust 2, 2006
Last updated in NPPESAugust 1, 2014

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 patients783
Services billed 869 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

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