DR. MATTHEW MICHEL SHASHATY MD
NPI 1558011973
Anesthesiology in Orange, CA
About Dr. Matthew Michel Shashaty Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW MICHEL SHASHATY MD (NPI 1558011973) is an individual anesthesiology provider in Orange, California, licensed in California (A190599) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in Stockton, and is a graduate of Georgetown University School Of Medicine (2022).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Matthew Michel Shashaty 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.
Medicare Billing Reassignment
Medicare enrollment records show Matthew Shashaty reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 420 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
ORANGE, CA 92868
ORANGE, CA 92868
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 Shashaty's NPI number?
The NPI number for Matthew Shashaty is 1558011973. It was assigned to this individual provider in the NPPES registry on March 28, 2022.
Where is Matthew Shashaty located?
Matthew Shashaty practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8888.
What is Matthew Shashaty's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Matthew Shashaty enrolled in Medicare?
Yes. Matthew Shashaty 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.
Which organization bills Medicare for Matthew Shashaty's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Shashaty reassigns Medicare benefits to Regents Of The University Of (Orange, CA). The 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 Matthew Shashaty's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Matthew Shashaty was last updated on April 24, 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.
# Dr. Matthew Michel Shashaty, MD · NPI 1558011973
Anesthesiology physician in Orange, California. Individual provider, active in the CMS NPPES registry since March 28, 2022.
## Identity
- **NPI:** 1558011973 (Entity type: Individual)
- **Enumerated:** March 28, 2022
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A190599 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-8888
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of (NPI 1487602546, Orange, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2022
## Record status
- **NPPES last updated:** April 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1558011973) · Data from the CMS NPPES public registry.