1. Home
  2. Directory
  3. California
  4. Pasadena
  5. Internal Medicine
  6. NPI Profile

PASADENA NEPHROLOGY CORPORATION A MEDICAL GROUP
NPI 1962584904
Internal Medicine - Nephrology in Pasadena, CA

Active since October 19, 2006
50 ALESSANDRO PL STE 250, PASADENA, CA 91105(626) 577-1675(626) 577-9115 Get Directions Write a Review

NPPES record last updated: April 13, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 13, 2026, Apr 9, 2026 (2 updates tracked since 2026).

About Pasadena Nephrology Corporation A Medical Group NPPES

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

PASADENA NEPHROLOGY CORPORATION A MEDICAL GROUP (NPI 1962584904) is a healthcare organization registered as a nephrology in Pasadena, California and active in the NPI registry since October 2006. The organization lists Michael S Linsey, Partner, as its authorized official.

NPPES Registry Identity

NPI1962584904
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NamePASADENA NEPHROLOGY CORPORATION A MEDICAL GROUP
Location Address50 ALESSANDRO PL STE 250Pasadena, CA 91105-3149
Mailing AddressPo Box 1390South Pasadena, CA 91031-1390 · (626) 577-1675 · Fax (626) 577-9115
Phone(626) 577-1675
Fax(626) 577-9115
Organization SubpartNo
Authorized OfficialMichael S LinseyPartner · (626) 577-1675
Enumeration DateOctober 19, 2006
Last NPPES UpdateApril 13, 20262 updates tracked since enumeration
NPPES CertifiedApril 13, 2026
✔ NPI 1962584904 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.
50 ALESSANDRO PL STE 250, Pasadena, CA 91105
Open in Google Maps ↗

Other Identifiers 1

MedicaidGR0095140CA

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)

Pasadena Nephrology Corporation A Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Pasadena Nephrology Corporation A Medical Group, which bills Medicare for the services they deliver. Of these, 5 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Allen Chao
Nephrology
NPI 1952765034
50 ALESSANDRO PL STE 250
Pasadena, CA 91105
(626) 577-1675
✔ PECOS✔ Accepts MedicareSame address
Matthew Kim, DO
Nephrology
NPI 1700319837
50 ALESSANDRO PL STE 250
Pasadena, CA 91105
(626) 577-1675
✔ PECOS✔ Accepts MedicareSame address
Michael Linsey, M.D.
Nephrology
NPI 1841215217
50 ALESSANDRO PL STE 250
Pasadena, CA 91105
(626) 577-1675
✔ PECOS✔ Accepts MedicareSame address
Ann Moore, MD
Nephrology
NPI 1750506630
50 ALESSANDRO PL STE 250
Pasadena, CA 91105
(626) 577-1675
✔ PECOS✔ Accepts MedicareSame address
Ka Lok Tse, M.D.
Nephrology
NPI 1093730491
50 ALESSANDRO PL STE 250
Pasadena, CA 91105
(626) 577-1675
✔ 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 Pasadena Nephrology Corporation A Medical Group's NPI number?

The NPI number for Pasadena Nephrology Corporation A Medical Group is 1962584904. It was assigned to this organization in the NPPES registry on October 19, 2006.

Where is Pasadena Nephrology Corporation A Medical Group located?

Pasadena Nephrology Corporation A Medical Group is located at 50 Alessandro Pl Ste 250, Pasadena, CA 91105. The listed phone number is (626) 577-1675.

What is Pasadena Nephrology Corporation A Medical Group's specialty?

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

Is Pasadena Nephrology Corporation A Medical Group enrolled in Medicare?

Yes. Pasadena Nephrology Corporation A Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Pasadena Nephrology Corporation A Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians, all in Nephrology, reassign their Medicare billing to Pasadena Nephrology Corporation A Medical Group. 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, 5 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 Pasadena Nephrology Corporation A Medical Group was last updated on April 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.