THE NEPHROLOGY GROUP, INC. CLINICAL LAB
NPI 1831621788
Clinical Medical Laboratory in Fresno, CA

Active since March 30, 2017
568 E HERNDON AVE STE 104, FRESNO, CA 93720(559) 228-6600(559) 226-3709 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Aug 21, 2017, Aug 15, 2017 and 1 more (4 updates tracked since 2017).

About The Nephrology Group, Inc. Clinical Lab NPPES

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

THE NEPHROLOGY GROUP, INC. CLINICAL LAB (NPI 1831621788), doing business as Fresno Nephrology Medical Group Inc, is a healthcare organization registered as a clinical medical laboratory in Fresno, California and active in the NPI registry since March 2017. The organization lists Steve W Su, Md, as its authorized official.

NPPES Registry Identity

NPI1831621788
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameTHE NEPHROLOGY GROUP, INC. CLINICAL LAB
Location Address568 E HERNDON AVE STE 104Fresno, CA 93720-2989
Mailing Address568 E Herndon Ave Ste 201Fresno, CA 93720-2989 · (559) 228-6600 · Fax (559) 226-3709
Fax(559) 226-3709
Organization SubpartYesParent: The Nephrology Group, Inc.
Authorized OfficialSteve W SuMd · (559) 228-6600
Enumeration DateMarch 30, 2017
Last NPPES UpdateJuly 21, 20224 updates tracked since enumeration
✔ NPI 1831621788 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
568 E HERNDON AVE STE 104, Fresno, CA 93720

Other Names 1

Former Legal Business NameFresno Nephrology Medical Group Inc

Other Identifiers 1

MedicaidGR0062730CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

The Nephrology Group, Inc. Clinical Lab is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

57

Medicare enrollment records show 57 clinicians reassign Medicare billing to The Nephrology Group, Inc. Clinical Lab, which bills Medicare for the services they deliver. Of these, 29 practice at this address and 35 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 6

Nephrology36
Nurse Practitioner17
Endocrinology1
Internal Medicine1
Registered Dietitian or Nutrition Professional1
Vascular Surgery1

Nearest to this location (20)

See all 57
Nephrology
NPI 1669685251
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1235116138
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1811319197
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Registered Dietitian or Nutrition Professional
NPI 1740951839
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ Accepts MedicareSame address
Nephrology
NPI 1124513312
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1801864020
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1487672192
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1902163413
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1467420679
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1770817744
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1972831790
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1609415140
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1487623427
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1982863098
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1194962266
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOSSame address
Nephrology
NPI 1629481569
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nephrology
NPI 1548524408
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1891409520
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1669712089
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOSSame address
Vascular Surgery
NPI 1992125272
568 E HERNDON AVE STE 201
Fresno, CA 93720
(559) 228-6600
✔ PECOS✔ Accepts MedicareSame address
See all 57 clinicians

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

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 The Nephrology Group, Inc. Clinical Lab's NPI number?

The NPI number for The Nephrology Group, Inc. Clinical Lab is 1831621788. It was assigned to this organization in the NPPES registry on March 30, 2017. The provider was formerly known as Fresno Nephrology Medical Group Inc.

Where is The Nephrology Group, Inc. Clinical Lab located?

The Nephrology Group, Inc. Clinical Lab is located at 568 E Herndon Ave Ste 104, Fresno, CA 93720. The listed phone number is (559) 228-6600.

What is The Nephrology Group, Inc. Clinical Lab's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Is The Nephrology Group, Inc. Clinical Lab enrolled in Medicare?

Yes. The Nephrology Group, Inc. Clinical Lab is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through The Nephrology Group, Inc. Clinical Lab?

According to the CMS Revalidation Reassignment List (October 2026 release), 57 clinicians in 6 Medicare specialties reassign their Medicare billing to The Nephrology Group, Inc. Clinical Lab. 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 (36), Nurse Practitioner (17) and Endocrinology (1). Of these, 29 practice at this address and 35 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for The Nephrology Group, Inc. Clinical Lab was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.