DR. MATTHEW J NIEDZWIECKI MD
NPI 1174859284
Psychiatry & Neurology - Psychiatry in Loma Linda, CA
About Dr. Matthew J Niedzwiecki Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW J NIEDZWIECKI MD (NPI 1174859284) is an individual psychiatry provider in Loma Linda, California, licensed in Illinois (036.130526) and active in the NPI registry since October 2009. He is enrolled in Medicare PECOS, is affiliated with Presence Saint Joseph Hospital - Chicago, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Matthew J Niedzwiecki Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Presence Saint Joseph Hospital - Chicago
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92354 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
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 Matthew Niedzwiecki's NPI number?
The NPI number for Matthew Niedzwiecki is 1174859284. It was assigned to this individual provider in the NPPES registry on October 23, 2009.
Where is Matthew Niedzwiecki located?
Matthew Niedzwiecki practices at 11332 Mountain View Ave Ste C, Loma Linda, CA 92354. The listed phone number is (401) 390-6297.
What is Matthew Niedzwiecki's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Matthew Niedzwiecki enrolled in Medicare?
Yes. Matthew Niedzwiecki is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
What insurance does Matthew Niedzwiecki accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Matthew Niedzwiecki as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Matthew Niedzwiecki affiliated with any hospitals?
According to CMS data, Matthew Niedzwiecki is affiliated with Presence Saint Joseph Hospital - Chicago.
When was this NPI record last updated?
The NPPES record for Matthew Niedzwiecki was last updated on January 12, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.
