NPI age
18 years
Enumerated 2007-12-17
● Active
Type 1 · Individual
Mary Jane Hammack, NP
Hammack is 1 of 233 nurse practitioner providers in Savannah and 1 of 8826 in Georgia.
Primary specialty
Nurse Practitioner
Plus 1 subspecialty
Licensed in
GA, KY
2 states
Status
Active
No deactivations on record
Last NPPES update
2014-07-02
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 8826 active nurse practitioner providers in Georgia.
NPI age
18 years
↑ 11 yr above median (7 yr)
State licenses
2 states
Top 92% — 8% of peers are multi-state
Subspecialties
1
In the 20% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-12Enumerated in NPPES
2007
2026
Where they practice
Practice location
4700 Waters Ave
Savannah, GA 314046220
Mailing address
4700 Waters Ave
Savannah, GA 314046220
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
-
Nurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (GA) | 003145582A | |
| 05 (SC) | NP2728 | |
| 01 (GA) | P01312094 | RAILROAD MEDICARE |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 538 other active providers share this practice address in NPPES.
Recently enumerated nearby: 3 new nurse practitioner providers have been added in Savannah in the last 180 days.
See all →
Provyx · Custom healthcare lists
Need all 8826 Nurse Practitioner providers in Georgia?
Provyx verifies the list to your scope. Business emails and direct lines are looked up at delivery, validated, and not stored.
Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.