Active NPI
Mason Wade Rau, MD
- Internal Medicine Physician
- Gonzales, LA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 330991
- Practice address
- 2647 S Saint Elizabeth Blvd Ste 219
Gonzales, LA 70737-5020 - Phone
- (225) 647-8511
- Fax
- (225) 644-8358
- NPI assigned
- Mar 18, 2019
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 330991 | LA | Primary |
Addresses
Primary practice location
2647 S Saint Elizabeth Blvd Ste 219
Gonzales, LA 70737-5020
Mailing address
5959 S Sherwood Forest Blvd
Baton Rouge, LA 70816-6038
Phone (225) 647-8511
Other practice location 1
1023 W Highway 30
Gonzales, LA 70737-5002
Phone (225) 765-5500
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2494970 | Medicaid | LA |
Electronic endpoints 4
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | mrau81317@direct.casso.us.com | Direct | |
| FHIR URL | https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ | Other | |
| Direct Messaging Address | mrau81317@direct.casso.us.com | Direct | |
| FHIR URL | https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ | Other |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in LA
- 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
- Internal Medicine
- Education
- Louisiana State University School of Medicine in New Orleans, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
2647 S Saint Elizabeth Blvd
Suite 219
Gonzales, LA 70737-5020
Phone (225) 765-5500
Hospital & facility affiliations
- Our Lady of the Lake Regional Medical Center
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Our Lady of the Lake Physician Group LLC | Internal Medicine | Current | Accepting new patients |
| Our Lady of the Lake Physician Group LLC | Current | Accepting new patients | |
| Our Lady of the Lake Physician Group LLC | Past | Accepting new patients |
Locations
5959 S Sherwood Forest Blvd
Baton Rouge, LA 70816
Phone (225) 526-0011
1023 W Highway 30
Gonzales, LA 70737
Phone (225) 743-2366
2647 S Saint Elizabeth Blvd
Ste 219
Gonzales, LA 70737
Phone (225) 765-5864
2647 S Saint Elizabeth Blvd
Ste 312
Gonzales, LA 70737
Networks
- LA PPO C-SNP
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.
-
- Internal Medicine Physician
- Baton Rouge, LA
- NPI 1033494943
-
- Comprehensive Outpatient Rehabilitation Facility (CORF)
- Baton Rouge, LA
- NPI 1235912502
-
- Hematology & Oncology Physician
- Baton Rouge, LA
- NPI 1184671455
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Baton Rouge, LA
- NPI 1366436123
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1552867200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773360000000",
"number": "1093274243",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5959 S SHERWOOD FOREST BLVD",
"city": "BATON ROUGE",
"state": "LA",
"postal_code": "708166038",
"telephone_number": "225-647-8511",
"fax_number": "225-644-8358"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2647 S SAINT ELIZABETH BLVD STE 219",
"city": "GONZALES",
"state": "LA",
"postal_code": "707375020",
"telephone_number": "225-647-8511",
"fax_number": "225-644-8358"
}
],
"practiceLocations": [
{
"address_1": "1023 W Highway 30",
"address_purpose": "LOCATION",
"city": "Gonzales",
"state": "LA",
"postal_code": "707375002",
"country_code": "US",
"telephone_number": "225-765-5500",
"fax_number": "225-647-5342",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "RAU",
"first_name": "MASON",
"middle_name": "WADE",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2019-03-18",
"last_updated": "2026-03-13",
"certification_date": "2026-03-13",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "LA",
"license": "330991",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "2494970",
"state": "LA"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "mrau81317@direct.casso.us.com",
"affiliation": "N",
"endpointDescription": "FMOLHS-Epic",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "mrau81317@direct.casso.us.com",
"address_1": "2647 S Saint Elizabeth Blvd Ste 219",
"city": "Gonzales",
"state": "LA",
"country_code": "US",
"postal_code": "707375020",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
"affiliation": "N",
"endpointDescription": "FMOLHS FHIR URL",
"use": "OTHER",
"useDescription": "Other",
"useOtherDescription": "FHIR API",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "C-CDA",
"address_1": "2647 S Saint Elizabeth Blvd Ste 219",
"city": "Gonzales",
"state": "LA",
"country_code": "US",
"postal_code": "707375020",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "mrau81317@direct.casso.us.com",
"affiliation": "N",
"endpointDescription": "FMOLHS-Epic",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "mrau81317@direct.casso.us.com",
"address_1": "1023 W Highway 30",
"city": "Gonzales",
"state": "LA",
"country_code": "US",
"postal_code": "707375002",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "FHIR",
"endpointTypeDescription": "FHIR URL",
"endpoint": "https://epicproxy.et0830.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
"affiliation": "N",
"endpointDescription": "FMOLHS FHIR URL",
"use": "OTHER",
"useDescription": "Other",
"useOtherDescription": "FHIR API",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "C-CDA",
"address_1": "1023 W Highway 30",
"city": "Gonzales",
"state": "LA",
"country_code": "US",
"postal_code": "707375002",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Gonzales, LA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 13, 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.