Margaret Embury Witek, CRNA
Certified Registered Nurse Anesthetist · Boston, MA
Margaret Embury Witek, CRNA is a certified registered nurse anesthetist with a practice address in Boston, Massachusetts, and NPI 1659859031, issued on Jul 30, 2018. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Embury Witek
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License numbers
- 7063 NC
RN622902 PA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-5000
- Enumerated
- Jul 30, 2018
- Record last updated
- Feb 24, 2023
- Medicare enrollment
- Enrolled (PECOS I20230309002318); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 1,342 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Margaret Embury Witek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Duke University Health System, IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Embury Witek among 1,342 certified registered nurse anesthetist records in Massachusetts
Margaret Embury Witek, CRNA is one of 1,342 certified registered nurse anesthetist records with a practice address in Massachusetts. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 72% of them.
- NPI issued2018 · 72% of these records are older, 24% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2018 · median 2013 among the 1,006 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Certified Registered Nurse Anesthetist providers in Massachusetts
There are 1,342 certified registered nurse anesthetist records in Massachusetts.
All 1,342 in Massachusetts → Every provider in Boston → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Eric Bergman, CRNABoston, MA 021111720040033
- Anne Brennan, CRNABoston, MA 021111104236884
- Cassie Chagnon, CRNA, RNBoston, MA 021111477807584
- Whitney Davis, CRNABoston, MA 021111518384908
- Kevin Donovan, CRNABoston, MA 021111326121641
- Beverly Gonzales-Arrieta, CRNABoston, MA 021111801932306
- Colleen McArtor, CRNABoston, MA 021111003948282
- Kevin McShane, CRNABoston, MA 021111831282284
Common questions
What is Margaret Embury Witek, CRNA's NPI number?
Margaret Embury Witek, CRNA's National Provider Identifier (NPI) is 1659859031, issued on Jul 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Embury Witek, CRNA located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5000. Providers update this record themselves, so call before visiting.
How can I verify Margaret Embury Witek, CRNA's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.