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

Individual provider Registered Nurse · NPI 1659859031

Margaret Embury Witek, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Boston, Massachusetts. Qualified in 2018, 8 years ago. Practices with Duke University Health System, Inc, a 1,082-clinician group and accepts Medicare assignment. Licensed in North Carolina and Pennsylvania.

Years since qualifying
8
Licensed in
NC, PA
In the registry since
2018
Specialties on file
2
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

800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
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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 7063 (NC)
Registered Nurse Taxonomy 163W00000X · Licence RN622902 (PA)

Record details

NPI number1659859031
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJuly 30, 2018
Last updated in NPPESFebruary 24, 2023
Certification dateFebruary 24, 2023

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Duke University Health System, Inc — 1082 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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