Active NPI
Guang Ren, PHD, RD, LD
- Registered Dietitian
- Birmingham, AL
National Provider Identifier
1902729007
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- 86450751
- Practice address
- 2000 6TH Ave S
Birmingham, AL 35233-2110 - Phone
- (205) 801-7464
- NPI assigned
- Aug 4, 2026
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Registered Dietitian | 133V00000X | 86450751 | AL | Primary |
Addresses
Primary practice location
2000 6TH Ave S
Birmingham, AL 35233-2110
Mailing address
PO Box 55310
Birmingham, AL 35255-5310
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)
- Not enrolled
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1785801600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786320000000",
"number": "1902729007",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 55310",
"city": "BIRMINGHAM",
"state": "AL",
"postal_code": "352555310"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2000 6TH AVE S",
"city": "BIRMINGHAM",
"state": "AL",
"postal_code": "352332110",
"telephone_number": "205-801-7464"
}
],
"practiceLocations": [],
"basic": {
"last_name": "REN",
"first_name": "GUANG",
"name_prefix": "Dr.",
"credential": "PHD, RD, LD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2026-08-04",
"last_updated": "2026-08-10",
"certification_date": "2026-08-10",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Dietitian, Registered",
"state": "AL",
"license": "86450751",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Birmingham, AL
- Heather Michelle Relyea Ashley, M.D.
- Tylah Remaley, MS, LAT, ATC
- Matthew Lee Remick, PSY.D.
- Stephanie Remington, BCBA, LBA
- Keith Stanton Remke Jr., ATC
- Renal Treatment Centers- Southeast, LP
- Renal Treatment Centers-Southeast, LP
- Renal Treatment Centers-Southeast, LP.
- Renew Health & Wellness LLC Dba Workwise
- Renewed Focus Health & Wellness , LLC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 10, 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.