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

Individual provider Certified Registered Nurse Anesthetist · NPI 1932197480

Mary Ellen Colyer, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in St Peters, Missouri. Qualified in 1996, 30 years ago. Practices with Digestive Health Specialists LLC, a 70-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
30
Licensed in
MO
In the registry since
2005
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

10 Hospital Dr
St Peters, MO 63376-1659 Not confirmed with CMS for 13 years — call before visiting
Phone: (314) 895-3828
Fax: (636) 922-5157
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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 047943 (MO)

Record details

NPI number1932197480
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedOctober 10, 2005
Last updated in NPPESMarch 12, 2013

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Digestive Health Specialists Llc — 70 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 patients531
Services billed 539 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Colleagues at Digestive Health Specialists LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 70 clinicians in the practice; 12 are shown here.