Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Mary H Holtgrewe-Seib, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1619940707

MS. Mary H Holtgrewe-Seib, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Saint Louis, Missouri. Qualified in 2000, 26 years ago. Practices with Midwest Anesthesia Providers SC, a 182-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
26
Licensed in
MO
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

12634 Olive Blvd
Saint Louis, MO 63141-6337
Phone: (314) 996-8378
Fax: (314) 996-8910
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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 2001012891 (MO)

Record details

NPI number1619940707
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedFebruary 9, 2006
Last updated in NPPESNovember 29, 2017

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Midwest Anesthesia Providers Sc — 182 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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