Active NPI
Peggy Sue Mason, CRNA
- Specialist
- Fairmont, MN
National Provider Identifier
1811987795
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Specialist
- License
- R 133085-0
- Practice address
- 835 Johnson St
Fairmont, MN 56031-4523 - Phone
- (507) 238-8100
- Fax
- (507) 238-8642
- NPI assigned
- Oct 24, 2005
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Specialist | 174400000X | R 133085-0 | MN | Primary |
Addresses
Primary practice location
835 Johnson St
Fairmont, MN 56031-4523
Mailing address
4280 160TH St
Estherville, IA 51334-7598
Phone (712) 362-5217
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| R 133085-0 | MN | MD | Specialist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Anesthesia West, P.C. | Past | Accepting new patients | |
| Anesthesia West, P.C. | Past | Accepting new patients |
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.
-
- Anesthesiology Physician
- Omaha, NE
- NPI 1508899568
-
- Certified Registered Nurse Anesthetist
- Omaha, NE
- NPI 1609928233
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130112000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1811987795",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4280 160TH ST",
"city": "ESTHERVILLE",
"state": "IA",
"postal_code": "513347598",
"telephone_number": "712-362-5217"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "835 JOHNSON ST",
"city": "FAIRMONT",
"state": "MN",
"postal_code": "560314523",
"telephone_number": "507-238-8100",
"fax_number": "507-238-8642"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MASON",
"first_name": "PEGGY",
"middle_name": "SUE",
"credential": "CRNA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2005-10-24",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "174400000X",
"taxonomy_group": "",
"desc": "Specialist",
"state": "MN",
"license": "R 133085-0",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Fairmont, MN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.