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

Mary Ruth Milley, CRNA

Individual provider Registered Nurse · NPI 1881680445

Mary Ruth Milley, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Wilmington, Delaware. Qualified in 1993, 33 years ago. Practices with North American Partners in Anesthesia Maryland LLC, a 48-clinician group and accepts Medicare assignment. Licensed in Delaware, Maryland and Pennsylvania.

Years since qualifying
33
Licensed in
DE, MD, PA
In the registry since
2005
Specialties on file
4
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

701 N Clayton St 3rd Fl
Wilmington, DE 19805-3158
Phone: (302) 421-4330
Fax: (302) 421-4331
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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 R252168 (MD)
Registered Nurse Taxonomy 163W00000X · Licence L1-0023597 (DE)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence L6-0A00192 (DE)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence RN262035L (PA)

Record details

NPI number1881680445
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedSeptember 20, 2005
Last updated in NPPESOctober 14, 2022
Certification dateOctober 14, 2022

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 North American Partners In Anesthesia Maryland Llc — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients324
Services billed 341 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 North American Partners in Anesthesia Maryland LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 48 clinicians in the practice; 12 are shown here.

Other providers in Wilmington