KIDNEY SPECIALIST INC.
NPI 1356539423
Internal Medicine - Nephrology in Madera, CA

Q: What is Kidney Specialist Inc.'s NPI number?

The NPI number for Kidney Specialist Inc. is 1356539423. It was assigned to this organization in the NPPES registry on October 14, 2007.

Q: What is Kidney Specialist Inc.'s specialty?

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

Active since October 14, 2007

451 E ALMOND AVE STE 101, MADERA, CA 93637(559) 661-1965(559) 661-1952 Get Directions Write a Review

NPPES record last updated: June 3, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Kidney Specialist Inc. NPPES

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

KIDNEY SPECIALIST INC. (NPI 1356539423) is a healthcare organization registered as a nephrology in Madera, California and active in the NPI registry since October 2007. The organization maintains a secondary practice location in Fresno and lists Sheikh Mohammad Masood, President, as its authorized official.

NPPES Registry Identity

NPI1356539423

Entity TypeOrganization

Primary Taxonomy207RN0300X

Legal Business NameKIDNEY SPECIALIST INC.

Location Address451 E ALMOND AVE STE 101Madera, CA 93637-5562

Mailing Address451 E Almond Ave Ste 101Madera, CA 93637-5562 · (559) 661-1965 · Fax (559) 661-1952

Phone(559) 661-1965

Fax(559) 661-1952

Organization SubpartNo

Authorized OfficialSheikh Mohammad MasoodPresident · (559) 661-1965

Enumeration DateOctober 14, 2007

Last NPPES UpdateJune 3, 2022

NPPES CertifiedJune 3, 2022

✔ NPI 1356539423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in CA · C-52769

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.

451 E ALMOND AVE STE 101, Madera, CA 93637

Open in Google Maps ↗

Secondary Practice Location 1

Location 11191 E Herndon Ave Ste 102Fresno, CA 93720-3164 · Phone (559) 661-1965 · Fax (559) 661-1952

Other Identifiers 1

Other1669422812CA · Npi

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 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)

Kidney Specialist Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Kidney Specialist Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Mohammed Siddiqui, MD

Nephrology

NPI 1184916983

451 E ALMOND AVE STE 101
Madera, CA 93637

(559) 661-1965

✔ PECOS✔ Accepts MedicareSame address

Sheikh Masood, M.D.

Nephrology

NPI 1669422812

451 E ALMOND AVE STE 101
Madera, CA 93637

(559) 661-1965

✔ PECOS✔ Accepts Medicare0.4 mi

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 Kidney Specialist Inc.'s NPI number?

The NPI number for Kidney Specialist Inc. is 1356539423. It was assigned to this organization in the NPPES registry on October 14, 2007.

Where is Kidney Specialist Inc. located?

Kidney Specialist Inc. is located at 451 E Almond Ave Ste 101, Madera, CA 93637. The listed phone number is (559) 661-1965.

What is Kidney Specialist Inc.'s specialty?

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

Is Kidney Specialist Inc. enrolled in Medicare?

Yes. Kidney Specialist Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Kidney Specialist Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Nephrology, reassign their Medicare billing to Kidney Specialist 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. Of these, 1 practice at this address and 2 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 Kidney Specialist Inc. was last updated on June 3, 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.