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NEPHROLOGY ASSOCIATES MEDICAL GROUP INC
NPI 1447200126
Internal Medicine - Nephrology in Riverside, CA

Active since May 11, 2006CLIA Certified · 3 labs
3660 PARK SIERRA DR STE 208, RIVERSIDE, CA 92505(951) 687-2800(951) 687-7290 Get Directions Write a Review

NPPES record last updated: June 4, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 4, 2026, Mar 26, 2026, Mar 18, 2026 and 2 more (5 updates tracked since 2022).

About Nephrology Associates Medical Group Inc NPPES

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

NEPHROLOGY ASSOCIATES MEDICAL GROUP INC (NPI 1447200126) is a healthcare organization registered as a nephrology in Riverside, California and active in the NPI registry since May 2006. The organization holds 3 active CLIA laboratory certificates, maintains 15 additional practice locations, and lists Dalia Dawoud Zaky, Ao, as its authorized official.

NPPES Registry Identity

NPI1447200126
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NameNEPHROLOGY ASSOCIATES MEDICAL GROUP INC
Location Address3660 PARK SIERRA DR STE 208Riverside, CA 92505-3071
Mailing Address3660 Park Sierra Dr Ste 203Riverside, CA 92505-3071 · (951) 687-3400 · Fax (951) 687-7630
Phone(951) 687-2800
Fax(951) 687-7290
Organization SubpartNo
Authorized OfficialDalia Dawoud ZakyAo · (951) 687-2800
Enumeration DateMay 11, 2006
Last NPPES UpdateJune 4, 20265 updates tracked since enumeration
NPPES CertifiedJune 4, 2026
✔ NPI 1447200126 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.
3660 PARK SIERRA DR STE 208, Riverside, CA 92505
Open in Google Maps ↗

Secondary Practice Locations 15

Location 142362 Bob Hope Dr Ste 1Rancho Mirage, CA 92270-4483 · Phone (760) 341-4839 · Fax (760) 340-3536
Location 2401 E Highland Ave Ste 551San Bernardino, CA 92404-3840 · Phone (909) 882-9150 · Fax (909) 883-8972
Location 331537 Rancho Pueblo Rd Ste 201Temecula, CA 92592-4841 · Phone (951) 687-7140 · Fax (951) 303-3565
Location 436320 Inland Valley Dr Ste 307Wildomar, CA 92595-7512 · Phone (951) 600-7140 · Fax (951) 600-7164
Location 5264 N Highland Springs Ave Ste 3BBanning, CA 92220-3085 · Phone (951) 769-9776 · Fax (951) 769-9026
Location 62057 Compton Ave Ste 102Corona, CA 92881-7295 · Phone (951) 736-6757 · Fax (951) 736-0167
Location 712523 Limonite Ave Ste 400Eastvale, CA 91752-3666 · Phone (951) 398-6868 · Fax (951) 221-8501
Location 83989 W Stetson Ave Ste 202Hemet, CA 92545-9697 · Phone (951) 652-3558 · Fax (951) 652-5547
Location 97223 Church St Ste A20Highland, CA 92346-5812 · Phone (909) 882-0702 · Fax (909) 886-6704
Location 10425 Diamond Dr Ste 102Lake Elsinore, CA 92530-4495 · Phone (951) 687-7140 · Fax (951) 303-3565
Location 1127851 Bradley Rd Ste 125Menifee, CA 92586-2282 · Phone (951) 672-7967 · Fax (951) 246-3747
Location 1222555 Alessandro Blvd Ste BMoreno Valley, CA 92553-8533 · Phone (951) 656-7081 · Fax (951) 656-1710
Location 131901 Town and Country Dr Ste 102Norco, CA 92860-3611 · Phone (951) 736-8100 · Fax (951) 736-8787
Location 144334 Central AveRiverside, CA 92506-2918 · Phone (951) 248-1291
Location 153660 Park Sierra Dr Ste 203Riverside, CA 92505-3071 · Phone (951) 687-3400 · Fax (951) 687-7630

Other Identifiers 6

MedicaidGR0071423CA
Medicaid1447200126CA
MedicaidGR0071424CA
MedicaidGR0071421CA
MedicaidGR0071422CA
MedicaidGR0071420CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE 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)

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

Clinicians Billing Medicare Through This Organization

71

Medicare enrollment records show 71 clinicians reassign Medicare billing to Nephrology Associates Medical Group Inc, which bills Medicare for the services they deliver. Of these, 13 practice at this address and 24 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 7

Nephrology41
Nurse Practitioner19
Interventional Radiology5
Diagnostic Radiology2
Internal Medicine2
Critical Care (Intensivists)1
Vascular Surgery1

Nearest to this location (20)

See all 71
Rizwan Badar, M.D.
Nephrology
NPI 1073761243
3660 PARK SIERRA DR SUITE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Salam Ishak, M.D
Internal Medicine
NPI 1427152842
3660 PARK SIERRA DR SUITE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Sible Rebello
Nurse Practitioner
NPI 1174030506
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-3400
✔ PECOSSame address
Kirollos Zaki, D.O
Nephrology
NPI 1104270305
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Adina Tanasescu, M.D.
Nephrology
NPI 1366494320
3660 PARK SIERRA DR SUITE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Richard Eric Atangan, FNP-BC, NP-C
Nurse Practitioner
NPI 1871245688
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Lerma Dacasin, FNP-C
Nurse Practitioner
NPI 1295566099
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Arthur Galoustian, MD
Nephrology
NPI 1487685426
3660 PARK SIERRA DR SUITE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Taher Khalil, M.D.
Nephrology
NPI 1962458752
3660 PARK SIERRA DR SUITE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOS✔ Accepts MedicareSame address
Paul Kil, FNP-C
Nurse Practitioner
NPI 1982476479
3660 PARK SIERRA DR STE 203
Riverside, CA 92505
(951) 687-3400
✔ PECOS✔ Accepts MedicareSame address
Laura Rigby, NP
Nurse Practitioner
NPI 1831674191
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-2800
✔ PECOSSame address
Lidia Vasquez, RN NP-C
Nurse Practitioner
NPI 1548441579
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(951) 687-3400
✔ PECOS✔ Accepts MedicareSame address
Dalia Zaky Dawoud, MD
Nephrology
NPI 1508026386
3660 PARK SIERRA DR STE 208
Riverside, CA 92505
(909) 882-9150
✔ PECOS✔ Accepts MedicareSame address
Masood Ahmad, M.D.
Critical Care (Intensivists)
NPI 1073069332
4234 RIVERWALK PKWY STE 230
Riverside, CA 92505
(951) 781-3672
✔ PECOS✔ Accepts Medicare1.4 mi
Honeylynn Abaya, NP
Nurse Practitioner
NPI 1528799145
280 TELLER ST STE 120
Corona, CA 92879
(909) 825-7084
✔ PECOS3.3 mi
Heeten Bhoot, D.O.
Nephrology
NPI 1740731413
1901 TOWN AND COUNTRY DR STE 102
Norco, CA 92860
(951) 736-8100
✔ PECOS✔ Accepts Medicare4.9 mi
Paul Niu, M.D.
Nephrology
NPI 1952336216
2057 COMPTON AVE SUITE 102
Corona, CA 92881
(951) 736-6757
✔ PECOS5.2 mi
Krishi Chanduri, M.D.
Nephrology
NPI 1598957540
2057 COMPTON AVE STE 102
Corona, CA 92881
(951) 736-6757
✔ PECOS✔ Accepts Medicare5.2 mi
Omar Saleh, M.D.
Diagnostic Radiology
NPI 1124280375
2083 COMPTON AVE STE 103
Corona, CA 92881
(601) 918-3286
✔ PECOS✔ Accepts Medicare5.3 mi
Karl Weingarten, MD
Interventional Radiology
NPI 1134172547
4334 CENTRAL AVE
Riverside, CA 92506
(951) 248-1291
✔ PECOS✔ Accepts Medicare5.4 mi
See all 71 clinicians

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 3

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 Waiver 05D1063894

Nephrology Associates Medical Group Inc · Moreno Valley, CA
Active · expires Jan 23, 2027
CLIA Number05D1063894
Laboratory TypePhysician Office
Certificate Effective DateJanuary 24, 2025
Certificate Expiration DateJanuary 23, 2027
Laboratory DirectorYogesh M. Patel
Laboratory Phone(951) 656-7081
Laboratory LocationNephrology Associates Medical Group Inc22555 Alessandro Blvd Suite B, Moreno Valley, CA 92553
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 05D1063895

Nephrology Associates Medical Group Inc · Hemet, CA
Active · expires Jan 23, 2027
CLIA Number05D1063895
Laboratory TypePhysician Office
Certificate Effective DateJanuary 24, 2025
Certificate Expiration DateJanuary 23, 2027
Laboratory DirectorDarshan K. Dhiman
Laboratory Phone(951) 652-3558
Laboratory LocationNephrology Associates Medical Group Inc3989 W Stetson Ave Ste 202, Hemet, CA 92545
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 05D1091238

Nephrology Associates Access Center · Riverside, CA
Active · expires Oct 27, 2028
CLIA Number05D1091238
Laboratory TypePhysician Office
Certificate Effective DateOctober 28, 2026
Certificate Expiration DateOctober 27, 2028
Laboratory DirectorDalia Dawoud
Laboratory Phone(951) 248-1291
Laboratory LocationNephrology Associates Access Center4100 Latham St Suite A, Riverside, CA 92501
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Medical Group Inc's NPI number?

The NPI number for Nephrology Associates Medical Group Inc is 1447200126. It was assigned to this organization in the NPPES registry on May 11, 2006.

Where is Nephrology Associates Medical Group Inc located?

Nephrology Associates Medical Group Inc is located at 3660 Park Sierra Dr Ste 208, Riverside, CA 92505. The listed phone number is (951) 687-2800.

What is Nephrology Associates Medical Group Inc's specialty?

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

Is Nephrology Associates Medical Group Inc enrolled in Medicare?

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

How many clinicians bill Medicare through Nephrology Associates Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 71 clinicians in 7 Medicare specialties reassign their Medicare billing to Nephrology Associates 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 (41), Nurse Practitioner (19) and Interventional Radiology (5). Of these, 13 practice at this address and 24 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Nephrology Associates Medical Group Inc hold CLIA laboratory certificates?

Yes. 3 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Nephrology Associates Medical Group Inc was last updated on June 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.