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NEPHROLOGY ASSOCIATES, PC
NPI 1891744322
Internal Medicine - Nephrology in Augusta, GA

Active since May 10, 2006CLIA 11D0714805 · Certificate of Compliance
701 GREENE ST STE 200, AUGUSTA, GA 30901(706) 722-6900(706) 722-5118 Get Directions Write a Review

NPPES record last updated: November 15, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 15, 2023, Nov 30, 2020, Nov 24, 2020 (3 updates tracked since 2020).

About Nephrology Associates, Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NEPHROLOGY ASSOCIATES, PC (NPI 1891744322) is a healthcare organization registered as a nephrology in Augusta, Georgia and active in the NPI registry since May 2006. The organization holds a CLIA Certificate of Compliance certificate valid through May 25, 2027 and lists Barton C Brezina, Director, as its authorized official.

NPPES Registry Identity

NPI1891744322
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameNEPHROLOGY ASSOCIATES, PC
Location Address701 GREENE ST STE 200Augusta, GA 30901-2385
Mailing Address701 Greene St Ste 200Augusta, GA 30901-2385 · (706) 722-6900 · Fax (706) 722-5118
Phone(706) 722-6900
Fax(706) 722-5118
Organization SubpartNo
Authorized OfficialBarton C BrezinaDirector · (706) 722-6900
Enumeration DateMay 10, 2006
Last NPPES UpdateNovember 15, 20233 updates tracked since enumeration
NPPES CertifiedNovember 15, 2023
✔ NPI 1891744322 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Also ListedPhysician Assistant · MedicalTaxonomy 363AM0700X
Also ListedNurse PractitionerTaxonomy 363L00000X
701 GREENE ST STE 200, Augusta, GA 30901
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Other Identifiers 3

OtherCE1734GA · Railroad Medicare Pin
Other613879400Acs/dol/energy
MedicaidGPA570SC

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of Alabama and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nephrology Associates, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

17

Medicare enrollment records show 17 clinicians reassign Medicare billing to Nephrology Associates, PC, which bills Medicare for the services they deliver. Of these, 10 practice at this address and 15 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 3

Nephrology8
Nurse Practitioner6
Internal Medicine3

Clinicians, nearest first (17)

Shelby Craig, NP
Nurse Practitioner
NPI 1003627209
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Trevor Tobin, DO, MS
Internal Medicine
NPI 1306399043
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Ryan Altenburg, D.O.
Nephrology
NPI 1073740643
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Syed Babar, MBBS, MD
Nephrology
NPI 1841513975
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Barton Brezina, MD
Nephrology
NPI 1205824877
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Matthew Diamond, D.O.
Nephrology
NPI 1760410351
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Harold Hubert, M.D.
Nephrology
NPI 1417171307
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Devesh Patel, M.D.
Internal Medicine
NPI 1316902943
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Cara Overstreet, NP
Nurse Practitioner
NPI 1114515699
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
James Stenard, MD
Nephrology
NPI 1396275491
701 GREENE ST STE 200
Augusta, GA 30901
(706) 722-6900
✔ PECOS✔ Accepts MedicareSame address
Rebecca White, FNP-C
Nurse Practitioner
NPI 1396311015
1350 WALTON WAY
Augusta, GA 30901
(706) 774-5542
✔ PECOS✔ Accepts Medicare1.1 mi
Courtney Nuckols, NP-C
Nurse Practitioner
NPI 1659963072
1120 15TH ST
Augusta, GA 30912
(706) 721-6172
✔ PECOS✔ Accepts Medicare1.5 mi
Michael Whitlow, M.D.
Nephrology
NPI 1700266418
1109 MEDICAL CENTER DR STE 5
Augusta, GA 30909
(706) 863-6637
✔ PECOS✔ Accepts Medicare7.4 mi
Nadeem Afzal, MD
Internal Medicine
NPI 1760480727
1109 MEDICAL CENTER DR BUILDING #5
Augusta, GA 30909
(706) 863-6637
✔ PECOS✔ Accepts Medicare7.5 mi
Molly Crook, AGACNP
Nurse Practitioner
NPI 1801676762
3651 WHEELER RD
Augusta, GA 30909
(706) 651-3232
✔ PECOS✔ Accepts Medicare7.6 mi
Gretchen Folk, APRN
Nurse Practitioner
NPI 1144976085
SC HOUSE CALLS INC. 111 DOCTORS CIR.
Columbia, SC 29203
(800) 491-0909
✔ PECOS✔ Accepts Medicare68 mi
Mark Smith, M.D.
Nephrology
NPI 1861479651
4015 LAKE OTIS PKWY STE 201
Anchorage, AK 99508
(907) 375-5200
✔ PECOS✔ Accepts Medicare3,503 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 11D0714805

Nephrology Associates PC · Augusta, GA
Active · expires May 25, 2027
CLIA Number11D0714805
Laboratory TypePhysician Office
Certificate Effective DateMay 26, 2025
Certificate Expiration DateMay 25, 2027
Laboratory DirectorWilson Clay
Laboratory Phone(706) 722-6900
Laboratory LocationNephrology Associates PC701 Greene Street, Suite 200, Augusta, GA 30901
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nephrology Associates, PC's NPI number?

The NPI number for Nephrology Associates, PC is 1891744322. It was assigned to this organization in the NPPES registry on May 10, 2006.

Where is Nephrology Associates, PC located?

Nephrology Associates, PC is located at 701 Greene St Ste 200, Augusta, GA 30901. The listed phone number is (706) 722-6900.

What is Nephrology Associates, PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Nephrology Associates, PC enrolled in Medicare?

Yes. Nephrology Associates, PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Nephrology Associates, PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 17 clinicians in 3 Medicare specialties reassign their Medicare billing to Nephrology Associates, PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Nephrology (8), Nurse Practitioner (6) and Internal Medicine (3). Of these, 10 practice at this address and 15 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Nephrology Associates, PC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 11D0714805) is associated with this NPI, valid through May 25, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Nephrology Associates, PC accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 1 other insurer list Nephrology Associates, PC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nephrology Associates, PC was last updated on November 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.