DR. MATTHEW D FAIN DO
NPI 1720390107
Internal Medicine - Critical Care Medicine in Phoenix, AZ
About Dr. Matthew D Fain Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW D FAIN DO (NPI 1720390107) is an individual critical care medicine provider in Phoenix, Arizona, licensed in Arizona (009886) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS, maintains a secondary practice location in Las Vegas, and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2010).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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 D Fain Do 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 Reassignments
3Medicare enrollment records show Matthew Fain reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Phoenix, AZ 85013
- Reassigned Medicare billing, Arizona enrollment
- 773 clinicians in this Medicare group
Henderson, NV 89052
- Reassigned Medicare billing, Nevada enrollment
- 46 clinicians in this Medicare group
Las Vegas, NV 89104
- Reassigned Medicare billing, Nevada enrollment
- 286 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85013 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
PHOENIX, AZ 85013
PHOENIX, AZ 85013
PHOENIX, AZ 85013
PHOENIX, AZ 85013
PHOENIX, AZ 85013
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 Fain's NPI number?
The NPI number for Matthew Fain is 1720390107. It was assigned to this individual provider in the NPPES registry on July 13, 2010.
Where is Matthew Fain located?
Matthew Fain practices at 500 W Thomas Rd Ste 500, Phoenix, AZ 85013. The listed phone number is (602) 406-4000.
What is Matthew Fain's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Matthew Fain enrolled in Medicare?
Yes. Matthew Fain 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 organizations bill Medicare for Matthew Fain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Fain reassigns Medicare benefits to 3 organizations: Sjhmc Physician Services (Phoenix, AZ), Sound Intensivists Of Nevada Rbessler MD PLLC (Henderson, NV) and Unlv Medicine (Las Vegas, NV). Each 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 Fain's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Fain accept?
Health plans from Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc list Matthew Fain 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.
When was this NPI record last updated?
The NPPES record for Matthew Fain was last updated on February 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.