Active NPI
Mary Catherine Hansen, DO
- Family Medicine Physician
- Corvallis, OR
National Provider Identifier
1104445741
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- DO215198
- Practice address
- 850 SW 26TH St
Corvallis, OR 97339 - Phone
- (541) 768-8800
- NPI assigned
- Apr 14, 2020
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | PG199416 | OR | |
| Family Medicine Physician | 207Q00000X | DO215198 | OR | Primary |
Addresses
Primary practice location
850 SW 26TH St
Corvallis, OR 97339
Mailing address
PO Box 1189
Corvallis, OR 97339-1189
Other practice location 1
3600 NW Samaritan Dr
Corvallis, OR 97330-3737
Phone (541) 768-4906
Other names 1
- Mary Rountree
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | mrountree190995@samhealth.direct-ci.com |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in OR
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Family Practice
- Education
- Rocky Vista University College of Osteopathic Med, 2020
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
3600 NW Samaritan Dr
Corvallis, OR 97330-3737
Hospital & facility affiliations
- Good Samaritan Regional Medical Center
- Samaritan Albany General Hospital
- Samaritan Lebanon Community Hospital
- Samaritan Pacific Community Hospital
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Good Samaritan Hospital Corvallis | Family Medicine | Current | Accepting new patients |
| Good Samaritan Hospital Corvallis | Current | Accepting new patients | |
| Good Samaritan Hospital Corvallis | Current | Accepting new patients |
Locations
3600 NW Samaritan Dr
Corvallis, OR 97330
Phone (541) 768-4906
815 NW 9th St
Ste 215
Corvallis, OR 97330
Phone (541) 768-1888
3600 NW Samaritan Dr
Ste 227
Corvallis, OR 97330
Phone (541) 768-1261
850 SW 26th St
Corvallis, OR 97331
Phone (541) 737-9355
Interoperability endpoints
- mrountree190995@samhealth.direct-ci.com
Organizations & group practices 3
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.
-
- General Acute Care Hospital
- Corvallis, OR
- NPI 1962453134
-
- Gynecologic Oncology Physician
- Corvallis, OR
- NPI 1710787916
-
- Family Medicine Physician
- Corvallis, OR
- NPI 1821671520
Hospital & facility affiliations 66
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Albany, OR
- NPI 1154372340
-
- Mental Health Clinic/Center (Including Community Mental Health Center)
- Albany, OR
- NPI 1326755158
Hospital
-
- Endocrinology, Diabetes & Metabolism Physician
- Albany, OR
- NPI 1346620408
Hospital
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1586822400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1771891200000",
"number": "1104445741",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 1189",
"city": "CORVALLIS",
"state": "OR",
"postal_code": "973391189"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "850 SW 26TH ST",
"city": "CORVALLIS",
"state": "OR",
"postal_code": "97339",
"telephone_number": "541-768-8800"
}
],
"practiceLocations": [
{
"address_1": "3600 NW Samaritan Dr",
"address_purpose": "LOCATION",
"city": "Corvallis",
"state": "OR",
"postal_code": "973303737",
"country_code": "US",
"telephone_number": "541-768-4906",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "HANSEN",
"first_name": "MARY",
"middle_name": "CATHERINE",
"credential": "DO",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2020-04-14",
"last_updated": "2026-02-24",
"certification_date": "2026-02-24",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "OR",
"license": "PG199416",
"primary": false
},
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "OR",
"license": "DO215198",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "mrountree190995@samhealth.direct-ci.com",
"affiliation": "N",
"address_1": "850 SW 26th St",
"city": "Corvallis",
"state": "OR",
"country_code": "US",
"postal_code": "97339",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"first_name": "MARY",
"last_name": "ROUNTREE",
"credential": "DO",
"code": "1",
"type": "Former Name"
}
]
}Other providers in Corvallis, OR
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- 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.