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PREMIER NEPHROLOGY MEDICAL GROUP, INC.
NPI 1316079106
Internal Medicine - Nephrology in Los Angeles, CA

Active since March 09, 2007
1400 S GRAND AVE, STE. 800, LOS ANGELES, CA 90015(213) 748-1414(213) 749-4021 Get Directions Write a Review

NPPES record last updated: July 13, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Premier Nephrology Medical Group, Inc. NPPES

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

PREMIER NEPHROLOGY MEDICAL GROUP, INC. (NPI 1316079106) is a healthcare organization registered as a nephrology in Los Angeles, California and active in the NPI registry since March 2007. The organization lists Bruce A Greenfield, President, as its authorized official.

NPPES Registry Identity

NPI1316079106
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NamePREMIER NEPHROLOGY MEDICAL GROUP, INC.
Location Address1400 S GRAND AVE, STE. 800Los Angeles, CA 90015-3048
Mailing Address1400 S Grand Ave, Ste. 800Los Angeles, CA 90015-3048 · (213) 748-1414 · Fax (213) 749-4021
Phone(213) 748-1414
Fax(213) 749-4021
Organization SubpartNo
Authorized OfficialBruce A GreenfieldPresident · (213) 742-1414
Enumeration DateMarch 9, 2007
Last NPPES UpdateJuly 13, 2007
✔ NPI 1316079106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
1400 S GRAND AVE, Los Angeles, CA 90015
Open in Google Maps ↗

Other Identifiers 2

MedicaidGR0065330CA
Medicare ID-Type UnspecifiedW13526CA

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Premier Nephrology Medical Group, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Premier Nephrology Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 6 practice at this address. They are listed nearest first.

Clinicians, nearest first (6)

Jonathan Cheng, MD
Internal Medicine
NPI 1538600887
1400 S GRAND AVE STE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address
Grace Choi
Nephrology
NPI 1831585074
1400 S GRAND AVE STE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address
Luani Lee, M.D.
Nephrology
NPI 1073747135
1400 S GRAND AVE STE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address
Lin Wang
Nephrology
NPI 1366974859
1400 S GRAND AVE STE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address
Leon Rovner, M.D.
Nephrology
NPI 1811013766
1400 S GRAND AVE SUITE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address
Bruce Greenfield, M.D.
Nephrology
NPI 1043224686
1400 S GRAND AVE SUITE 800
Los Angeles, CA 90015
(213) 748-1414
✔ PECOS✔ Accepts MedicareSame address

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 Premier Nephrology Medical Group, Inc.'s NPI number?

The NPI number for Premier Nephrology Medical Group, Inc. is 1316079106. It was assigned to this organization in the NPPES registry on March 9, 2007.

Where is Premier Nephrology Medical Group, Inc. located?

Premier Nephrology Medical Group, Inc. is located at 1400 S Grand Ave Ste. 800, Los Angeles, CA 90015. The listed phone number is (213) 748-1414.

What is Premier Nephrology Medical Group, Inc.'s specialty?

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

Is Premier Nephrology Medical Group, Inc. enrolled in Medicare?

Yes. Premier Nephrology Medical Group, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Premier Nephrology Medical Group, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Premier Nephrology Medical Group, Inc.. 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 (5) and Internal Medicine (1). Of these, 6 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Premier Nephrology Medical Group, Inc. was last updated on July 13, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.