Unknown Individual – Nephrology Physician, NPI 1275526840

Nephrology Physician

Unknown Individual is a healthcare provider. based in Los angeles, California. specializing in Nephrology Physician. They hold a License No. 20A5220 (CA). The NPI Number for Unknown Individual is 1275526840

Main info

Organization

Inactive

37 Years Of Experience

Accepts Medicare Assignment

Name

Unknown Individual

NPI

1275526840

Phone

(951) 687-3400

Address

PO BOX 54130

Deactivation Date

6 October 2022

Doctor Profile

Medical School Name

DES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES

Secondary Phone

7603414839

Graduation Year

1989 (37 years ago)

PAC ID

3971530437

Group Practice PAC ID

5092604447

Professional Enrollment ID

I20050726001020

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience14

Completeness75

Years active:0State licenses:1Digital endpointsOther names

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Provider Addresses for Unknown Individual

PO BOX 54130
LOS ANGELES, CA 900540130
Phone: (951) 687-3400
Fax: (951) 687-7630
Type: Mailing
36955, Cook Street, Palm Desert, Riverside County, California, 92211, United States
STE 102
PALM DESERT, CA 922116084
Phone: (760) 341-4839
Fax: (760) 340-3536
Type: Location
1100 N Palm Canyon Dr Ste 211
Palm Springs, CA 922624426
Phone: (760) 323-1155
Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 90054)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.

PAC ID: 5092604447View full group profile

Name	Specialty	State
DR. SHARON REUBEN (MD)	Nephrology, Internal Medicine	NY
DAVID FLEMMING CHANG (M.D.)	Nephrology, Internal Medicine	CA
DR. RIZWAN BADAR (M.D.)	Nephrology, Internal Medicine	CA
KIROLLOS ZAKI (D.O)	Nephrology, Internal Medicine	CA
MARIANNE GUINTU USI (NP)	Nurse Practitioner	CA
KARL E WEINGARTEN (MD)	Diagnostic Radiology, Interventional Radiology	MA
CHAO-HUANG SUN (M.D., MPH)	-	CA
DR. ANDREW TZE-RAY CHEUNG (M.D.)	Nephrology, Internal Medicine	CA
SIBLE REBELLO	-	CA
DR. IAN DAVID KAISER (M.D.)	Nephrology, Internal Medicine	MO

Reviews

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Frequently asked questions

What is the registry number for Unknown Individual?

The registry entry for Unknown Individual shows NPI 1275526840.

What should I verify if Unknown Individual is listed inactive?

If Unknown Individual looks inactive here, cross-check state licensing and the clinic website.

What does the directory say Unknown Individual does?

Insurance directories may phrase it differently, but here Unknown Individual maps to Nephrology Physician. Clinical services aligned with this taxonomy classification.

Is Unknown Individual tied to Los Angeles, California?

If you are local to Los Angeles, California, Unknown Individual may be relevant to your search.

What is the difference between NPI and a medical license?

An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.