Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. MARY H HOLTGREWE-SEIB CRNA
NPI 1619940707
Nurse Anesthetist, Certified Registered in Saint Louis, MO

Q: What is Mary Holtgrewe-seib's NPI number?

The NPI number for Mary Holtgrewe-seib is 1619940707. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Q: What is Mary Holtgrewe-seib's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Active since February 09, 2006

12634 OLIVE BLVD, SAINT LOUIS, MO 63141(314) 996-8378(314) 996-8910 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 29, 2026, Aug 14, 2026, Nov 29, 2017 (3 updates tracked since 2017).

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About Ms. Mary H Holtgrewe-seib Crna NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. MARY H HOLTGREWE-SEIB CRNA (NPI 1619940707) is an individual nurse anesthetist, certified registered in Saint Louis, Missouri, licensed in Missouri (2001012891) and active in the NPI registry since February 2006. She is affiliated with Missouri Baptist Medical Center, maintains a secondary practice location in Saint Louis, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1619940707

Entity TypeIndividualFemale

Primary Taxonomy367500000X

Provider Legal NameMS. MARY H HOLTGREWE-SEIBCredential: CRNA

Location Address12634 OLIVE BLVDSaint Louis, MO 63141-6337

Mailing Address660 S Euclid Ave, C B 8054Saint Louis, MO 63110-1010 · (314) 996-8378 · Fax (314) 996-8910

Phone(314) 996-8378

Fax(314) 996-8910

Sole ProprietorNo

Medical School CMSOtherGraduated 2000

Enumeration DateFebruary 9, 2006

Last NPPES UpdateSeptember 29, 20263 updates tracked since enumeration

NPPES CertifiedAugust 14, 2026

✔ NPI 1619940707 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

License✔ Licensed in MO · 2001012891

Definition

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

12634 OLIVE BLVD, Saint Louis, MO 63141

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Secondary Practice Location 1

Location 13015 N Ballas RdSaint Louis, MO 63131-2329 · Phone (314) 996-5000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Mary H Holtgrewe-seib Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5698662831

PECOS Enrollment IDI20090507000083

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for lens surgery 00142

Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.

11 services11 patients

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731

This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260108

Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County

Emergency services Birthing friendly

Christian Hospital Northeast

Acute Care Hospitals · Saint Louis, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260180

Location11133 Dunn RoadSaint Louis, MO 63136 · St. Louis County

Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. MARY KATHERINE KINWORTHY CRNA

Nurse Anesthetist, Certified Registered

12634 OLIVE BLVD, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63141

St. Louis County (800) 862-9980

BC MISSOURI EMERGENCY PHYSICIANS, LLP

Emergency Medicine

12634 OLIVE BLVD
SAINT LOUIS, MO 63141

St. Louis County (314) 434-0600

MR. MICHAEL MCCAMLEY CRNA

Nurse Anesthetist, Certified Registered

12634 OLIVE BLVD
SAINT LOUIS, MO 63141

St. Louis County (314) 996-8685

DR. ALBERT M COHEN MD

Anesthesiology

12634 OLIVE BLVD, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63141

St. Louis County (800) 862-9980

AMY MARIE BAUER MAE, BSN, RN, CRNFA

Registered Nurse (Registered Nurse First Assistant)

12634 OLIVE BLVD
CREVE COEUR, MO 63141

St. Louis County (314) 996-8000

MS. SUSAN M ANDERSON CRNA

Nurse Anesthetist, Certified Registered

12634 OLIVE BLVD, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63141

St. Louis County (800) 862-9980

MS. RACHEL JEANNINE HINCHCLIFF CRNA

Nurse Anesthetist, Certified Registered

12634 OLIVE BLVD, DEPT ANESTHESIOLOGY
SAINT LOUIS, MO 63141

St. Louis County (800) 862-9980

ALYSSA BJERK NP-C

Nurse Practitioner (Family)

12634 OLIVE BLVD
SAINT LOUIS, MO 63141

St. Louis County (314) 362-4468

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Holtgrewe-seib's NPI number?

The NPI number for Mary Holtgrewe-seib is 1619940707. It was assigned to this individual provider in the NPPES registry on February 9, 2006.

Where is Mary Holtgrewe-seib located?

Mary Holtgrewe-seib practices at 12634 Olive Blvd, Saint Louis, MO 63141. The listed phone number is (314) 996-8378.

What is Mary Holtgrewe-seib's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Mary Holtgrewe-seib enrolled in Medicare?

Yes. Mary Holtgrewe-seib is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mary Holtgrewe-seib affiliated with any hospitals?

According to CMS data, Mary Holtgrewe-seib is affiliated with Missouri Baptist Medical Center and Christian Hospital Northeast.

When was this NPI record last updated?

The NPPES record for Mary Holtgrewe-seib was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.