Active NPI
Gregory Paul Marks, MD
- Otolaryngology Physician
- New Orleans, LA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Otolaryngology Physician
- License
- 347996
- Practice address
- 533 Bolivar St Ste 566
New Orleans, LA 70112-1349 - Phone
- (504) 568-4785
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Student in an Organized Health Care Education/Training Program | 390200000X | |||
| Otolaryngology Physician | 207Y00000X | 347996 | LA | Primary |
Addresses
Primary practice location
533 Bolivar St Ste 566
New Orleans, LA 70112-1349
Mailing address
533 Bolivar St Ste 566
New Orleans, LA 70112-1349
Phone (504) 568-4785
Other practice location 1
4950 Essen Ln Ste 400
Baton Rouge, LA 70809-3738
Phone (225) 765-1765
Other practice location 2
619 19th St S
Birmingham, AL 35233-1900
Phone (205) 934-4011
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in AL, LA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Otolaryngology
- Education
- Louisiana State University School of Medicine in New Orleans, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
4950 Essen LN
Suite 400
Baton Rouge, LA 70809-3738
Phone (225) 765-1765
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 |
| Melanoma (skin cancer) excision | 14 |
| Removal of tissue | 1-10 |
| Skin biopsy | 1-10 |
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 | Otolaryngology | Current | Accepting new patients |
| Lsuhn Billing LLC | Current | Accepting new patients | |
| Our Lady of the Lake Physician Group LLC | Current | Accepting new patients | |
| Lsuhn Billing LLC | Current | Accepting new patients | |
| University of Alabama Health Services Foundation, PC. | Current | Accepting new patients | |
| Our Lady of the Lake Physician Group LLC | Past | Accepting new patients |
Locations
619 19th St S
Birmingham, AL 35249
619 19th St S
Birmingham, AL 35233
Phone (205) 934-6405
720 39th St N
Birmingham, AL 35222
4950 Essen Ln
Ste 400
Baton Rouge, LA 70809
Phone (225) 765-1765
5959 S Sherwood Forest Blvd
Baton Rouge, LA 70816
Phone (225) 526-0011
9032 Perkins Rd
Baton Rouge, LA 70810
Phone (225) 358-4853
2390 W Congress St
Lafayette, LA 70506
Phone (337) 261-6000
533 Bolivar St
Ste 566
New Orleans, LA 70112
Phone (504) 427-5079
Interoperability endpoints
- gmarks111907@direct.casso.us.com
Organizations & group practices 6
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
Otolaryngology
-
- Multi-Specialty Clinic/Center
- Lafayette, LA
- NPI 1992975775
-
- Multi-Specialty Clinic/Center
- Birmingham, AL
- NPI 1093768723
-
- Oral and Maxillofacial Surgery (Dentist)
- Baton Rouge, LA
- NPI 1306247556
-
- Comprehensive Outpatient Rehabilitation Facility (CORF)
- Baton Rouge, LA
- NPI 1235912502
-
- Hematology & Oncology Physician
- Baton Rouge, LA
- NPI 1184671455
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Lafayette, LA
- NPI 1598766495
-
- 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": "1756425600000",
"number": "1487113692",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "533 BOLIVAR ST STE 566",
"city": "NEW ORLEANS",
"state": "LA",
"postal_code": "701121349",
"telephone_number": "504-568-4785"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "533 BOLIVAR ST STE 566",
"city": "NEW ORLEANS",
"state": "LA",
"postal_code": "701121349",
"telephone_number": "504-568-4785"
}
],
"practiceLocations": [
{
"address_1": "4950 Essen Ln Ste 400",
"address_purpose": "LOCATION",
"city": "Baton Rouge",
"state": "LA",
"postal_code": "708093738",
"country_code": "US",
"telephone_number": "225-765-1765",
"fax_number": "225-765-1768",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "619 19th St S",
"address_purpose": "LOCATION",
"city": "Birmingham",
"state": "AL",
"postal_code": "352331900",
"country_code": "US",
"telephone_number": "205-934-4011",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MARKS",
"first_name": "GREGORY",
"middle_name": "PAUL",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2019-03-18",
"last_updated": "2025-08-29",
"certification_date": "2025-08-29",
"status": "A"
},
"taxonomies": [
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": false
},
{
"code": "207Y00000X",
"taxonomy_group": "",
"desc": "Otolaryngology",
"state": "LA",
"license": "347996",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in New Orleans, LA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 29, 2025; 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.