Individual provider Active NPI

Mark Garold Pontow

  • Certified Registered Nurse Anesthetist
  • Appleton, WI
National Provider Identifier
1255914735
Registry record updated May 8, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
11943-33 Issued in WI
Practice address
1506 S Oneida St
Appleton, WI 54915-1305
Phone
(920) 738-2000
NPI assigned
May 3, 2021
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 8, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X 11943-33 WI Primary

Addresses

Primary practice location

1506 S Oneida St
Appleton, WI 54915-1305

Mailing address

1506 S Oneida St
Appleton, WI 54915-1305
Phone (920) 738-2000

Electronic endpoints 1

TypeEndpointUseAffiliation
CONNECT URL Appleton

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210921003339 WI Practitioner - Certified Registered Nurse Anesthetist (Crna) 8820495633 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Racine Anesthesia Services LLCGroup PAC ID 8628103777, 81 clinicians

Practice addresses (Care Compare)

500 S Oakwood Rd
Oshkosh, WI 54904-7944
Phone (920) 223-2000

Hospital & facility affiliations

  • Ascension NE Wisconsin - St Elizabeth Campus Hospital, Appleton, WI, CCN 520009
  • Thedacare Regional Med Ctr - Neenah Hospital, Neenah, WI, CCN 520045

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Racine Anesthesia Services, LLC Nurse Anesthetist, Certified Registered CurrentSince Mar 1, 2024 Accepting new patients
Laboratory Corportation of America Holdings Past Accepting new patients

Locations

1506 S Oneida St
Appleton, WI 54915
Phone (920) 730-4950

1616 N Casaloma Dr
#200
Appleton, WI 54913
Phone (314) 550-0188

614 Memorial Dr
Chilton, WI 53014
Phone (800) 458-4042

1550 Midway Pl
Menasha, WI 54952
Phone (920) 727-8030

3801 Spring St
Mount Pleasant, WI 53405
Phone (262) 636-4011

500 S Oakwood Rd
Oshkosh, WI 54904
Phone (920) 223-0501

Organizations & group practices 2

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

Hospital & facility affiliations 7

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

NPI Registry JSON

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

{
    "created_epoch": "1620000000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1746662400000",
    "number": "1255914735",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1506 S ONEIDA ST",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549151305",
            "telephone_number": "920-738-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1506 S ONEIDA ST",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549151305",
            "telephone_number": "920-738-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PONTOW",
        "first_name": "MARK",
        "middle_name": "GAROLD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-05-03",
        "last_updated": "2025-05-08",
        "certification_date": "2025-05-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "WI",
            "license": "11943-33",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "Appleton",
            "affiliation": "N",
            "address_1": "1506 S Oneida St",
            "city": "Appleton",
            "state": "WI",
            "country_code": "US",
            "postal_code": "549151305",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Appleton, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 8, 2025; 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.