Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Sharmaine K Mercer, MSN, AGACNP, PMHNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1831805274

Mrs. Sharmaine K Mercer, MSN, AGACNP, PMHNP is a Nurse Practitioner in Smyrna, Georgia. Qualified in 2022, 4 years ago. Practices with Grady Memorial Hospital Corporation, a 363-clinician group and accepts Medicare assignment. Licensed in Georgia.

Years since qualifying
4
Licensed in
GA
In the registry since
2023
Specialties on file
3
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

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Practice location Address checks out

3188 Atlanta Rd SE
Smyrna, GA 30080-8256
Phone: (404) 787-4424
Fax: (404) 745-0389
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence 282183 (GA)
Psychiatric/Mental Health Nurse Practitioner Taxonomy 363LP0808X · Licence 282183 (GA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 282183 (GA)

Record details

NPI number1831805274
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , AGACNP , PMHNP
Sole proprietorYes
NPI enumeratedJanuary 30, 2023
Last updated in NPPESMarch 9, 2026
Certification dateMarch 9, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Group practice Grady Memorial Hospital Corporation — 363 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients25
Services billed 34 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Grady Memorial Hospital Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 363 clinicians in the practice; 12 are shown here.

Other providers in Smyrna