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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. REGINA PATRICIA CRUZ SINGSON MD
NPI 1609842863
Pathology - Anatomic Pathology & Clinical Pathology in Thousand Oaks, CA

Active since February 27, 2006PECOS Enrolled
215 W JANSS RD, THOUSAND OAKS, CA 91360(805) 373-8582(805) 373-6865 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Regina Patricia Cruz Singson Md NPPES

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

DR. REGINA PATRICIA CRUZ SINGSON MD (NPI 1609842863) is an individual anatomic pathology & clinical pathology provider in Thousand Oaks, California, licensed in California (A55921) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1609842863
Entity TypeIndividualFemale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. REGINA PATRICIA CRUZ SINGSONCredential: MD
Location Address215 W JANSS RDThousand Oaks, CA 91360
Mailing Address2190 Lynn Rd, Ste 220Thousand Oaks, CA 91360 · (805) 495-8050 · Fax (805) 496-2160
Phone(805) 373-8582
Fax(805) 373-6865
Sole ProprietorNo
Enumeration DateFebruary 27, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1609842863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A55921
Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

215 W JANSS RD, Thousand Oaks, CA 91360
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Other Identifiers 1

MedicaidA55921CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Regina Patricia Cruz Singson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91360 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LOS ROBLES RADIOLOGIC ASSOCIATES
Radiology (Diagnostic Radiology)
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (054) 972-7278
DR. NUSAYBA MANAL AHMED MD
Student in an Organized Health Care Education/Training Program
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 852-9229
DANIELLE ASHLEY SHERMAN
Physician Assistant
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 497-2727
MARIA DUBOVITSKAYA MD
Student in an Organized Health Care Education/Training Program
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 852-9229
SUKHWINDER SINGH DHILLON
Student in an Organized Health Care Education/Training Program
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 852-9229
ALEEN SISAKIAN MD
Student in an Organized Health Care Education/Training Program
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 852-9229
YASH PATIL DO
Student in an Organized Health Care Education/Training Program
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 852-9229
DR. ERNA M. KWONG M.D.
Anesthesiology
215 W JANSS RD
THOUSAND OAKS, CA 91360
Ventura County (805) 497-2727

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 Regina Patricia Singson's NPI number?

The NPI number for Regina Patricia Singson is 1609842863. It was assigned to this individual provider in the NPPES registry on February 27, 2006.

Where is Regina Patricia Singson located?

Regina Patricia Singson practices at 215 W Janss Rd, Thousand Oaks, CA 91360. The listed phone number is (805) 373-8582.

What is Regina Patricia Singson's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Regina Patricia Singson enrolled in Medicare?

Yes. Regina Patricia Singson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Regina Patricia Singson was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.