NPI age
17 years
Enumerated 2009-05-19
● Active
Type 1 · Individual
Barbara O'Callaghan, RN, NP
O'Callaghan is 1 of 2 oncology (registered nurse) providers in Lawrenceville and 1 of 23 in Georgia.
Primary specialty
Oncology (Registered Nurse)
Licensed in
GA
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-02-03
Source: CMS NPPES provider record
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 23 active oncology (registered nurse) providers in Georgia.
NPI age
17 years
↑ 16 yr above median (1 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
0% of peers hold subspecialties
NPI lifetime · 2009 → 2010
2009-05Enumerated in NPPES
2009
2010
Where they practice
Practice location
631 Professional Drive, 450
Lawrenceville, GA 300467651
Mailing address
651 Carroll'S Way
Buford, GA 30518
Specialties
-
Registered Nurse PrimaryCMS NPPES uses NUCC taxonomy code 163WX0200X for provider records classified as Oncology within Registered Nurse. The taxonomy identifies the category reported on the NPI record; it does not by itself verify services offered, current...
Medicare directory context
Medicare specialties
Nurse Practitioner
Largest Medicare group
29 members
Largest listed enrollment group
Facility affiliations reported by CMS
- North Atlanta Oncology Services Llc
Practice context
Part of a multi-provider practice. 12 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 23 Oncology (Registered Nurse) providers in Georgia?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
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.