Mary H Holtgrewe-Seib, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

2001012891 Issued in MO

Practice address

12634 Olive Blvd
Saint Louis, MO 63141-6337

Phone

(314) 996-8378

Fax

(314) 996-8910

NPI assigned

Feb 9, 2006

Last updated

Sep 29, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

Enrollment records 1

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Midwest Anesthesia Providers SCGroup PAC ID 9830480581, 180 clinicians

Missouri Baptist Medical CenterGroup PAC ID 3476461955, 123 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Missouri Baptist Medical Center Hospital, Saint Louis, MO, CCN 260108
• Christian Hospital Northeast Hospital, Saint Louis, MO, CCN 260180

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Registered Nurse

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Midwest Anesthesia Providers S.C

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1295189082

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• Missouri Baptist Medical Center

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1609658905

  Nurse Anesthetist, Certified Registered

  Medicare reassignment Care Compare group NPD
• Eye Anesthesia LLC

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1528334182
  Medicare reassignment NPD
• Metro-West Anesthesia Group Inc

  • Anesthesiology Physician
  • Chesterfield, MO
  • NPI 1245427335

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Novamed Eye Surgery Center of North County LLC

  dba Woodcrest Surgery Center

  • Certified Registered Nurse Anesthetist
  • Saint Louis, MO
  • NPI 1003260100

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• SSM Health Slu Hospital Anesthesia Physician Billing, LLC

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1407232804

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• SW Anesthesia LLC

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1306319769
  Medicare reassignment NPD
• Orthomed Staffing LLC

  • Anesthesiology Physician
  • Addison, TX
  • NPI 1225514276

  MO

  Medicare reassignment
• Novamed Eye Surgery Center of North County, LLC

  dba St. Louis Children's Surgery Center

  • Ambulatory Surgical Clinic/Center
  • Saint Louis, MO
  • NPI 1285630160
  NPD (past)
• Anesthesia Consultants of Erie, Inc.

  • Anesthesiology Physician
  • Erie, PA
  • NPI 1003809559
  NPD (past)
• Blair County Anesthesia, P.C.

  • Anesthesiology Physician
  • Altoona, PA
  • NPI 1003864612
  NPD (past)
• Center for Pain Relief, Inc.

  • Interventional Pain Medicine Physician
  • Charleston, WV
  • NPI 1831116375
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Christian Hospital Northeast- Northwest

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1639186760
  Care Compare affiliation
• Christian Hospital Northeast-Northwest

  dba Christian Hospital

  • Ambulance
  • Saint Louis, MO
  • NPI 1073769329

  Hospital

  Care Compare affiliation
• Missouri Baptist Medical Center

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1487663506
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1139443200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790640000000",
    "number": "1619940707",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "660 S EUCLID AVE",
            "address_2": "C B 8054",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101010",
            "telephone_number": "314-996-8378",
            "fax_number": "314-996-8910"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12634 OLIVE BLVD",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631416337",
            "telephone_number": "314-996-8378",
            "fax_number": "314-996-8910"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3015 N Ballas Rd",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631312329",
            "country_code": "US",
            "telephone_number": "314-996-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOLTGREWE-SEIB",
        "first_name": "MARY",
        "middle_name": "H",
        "name_prefix": "Ms.",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-02-09",
        "last_updated": "2026-09-29",
        "certification_date": "2026-08-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MO",
            "license": "2001012891",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "endpointDescription": "BJC",
            "affiliationName": "MISSOURI BAPTIST MEDICAL CENTER",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "3015 N Ballas Rd",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631312329",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Kellianne C Holt, PHARM.D.
• Laura L Holt, PHD
• Maria Holt
• Rose F. Holt, LPC
• Kirstie Holtermann
• Andrea M Holthaus, MD
• Christopher Vincent Holthaus, MD
• Janelle Holthaus, MSN, APRN, AGCNS-BC
• Mark Erwin Holthaus, CRNA
• Tessa Holtkamp, CGC

• Certified Registered Nurse Anesthetist in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Certified Registered Nurse Anesthetist in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.