Mary L. Duncan , CLINSCD CCC-SLP
Speech-Language Pathologist β’ Ellenwood, GA
4549 Revenue Trl
Ellenwood, GA 302946413
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
4549 Revenue Trl
Ellenwood, GA 302946413
NPPES lists 1 additional practice-address record in Stockbridge, GA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Speech-Language Pathologist: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Compared with the same specialty in Ellenwood and Georgia
9 active clinicians are listed under Speech-Language Pathologist with a practice address in Ellenwood, GA (4,832 in Georgia).
Addresses are self-reported to NPPES and may be out of date.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-06-10NUCC Taxonomy Code: 235Z00000X
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
NUCC Taxonomy Code: 235Z00000X
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
NUCC Taxonomy Code: 235Z00000X
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
Additional State Medicaid & Healthcare Payer Identifiers
Secondary Practice Locations
7454 Hannover Pkwy S
Stockbridge, GA 302817889
Phone: 2295986660
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 4549 REVENUE TRL, ELLENWOOD, GA 302946413 (Tel: 4048052875)
Registered at 4549 REVENUE TRL, ELLENWOOD, GA 302946413 (Tel: 4048052875)
Additional practice office at 7454 Hannover Pkwy S, Stockbridge, GA 302817889
Recorded as MARY DUNCAN, CLINSCD CCC-SLP
Speech-Language Pathologist (license number reported to NPPES: VA 2202009271)
NPI status registered as active in NPPES database
Registered at 9N768 WHISPERING SPRINGS LN, ELGIN, IL 601248362 (Tel: 4048052875)
Registered at 9N768 WHISPERING SPRINGS LN, ELGIN, IL 601248362 (Tel: 4048052875)
Recorded as MARY DUNCAN, M.A. CCC-SLP
Speech-Language Pathologist (license number reported to NPPES: IL 146.011397)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
4549 Revenue Trl
Ellenwood, GA 302946413
Phone: 4048052875