DR. MATTHEW MICHAEL MILLER DO
NPI 1639372360
Hospitalist in Orange, CA
About Dr. Matthew Michael Miller Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MATTHEW MICHAEL MILLER DO (NPI 1639372360) is an individual hospitalist provider in Orange, California, licensed in California (20A24335) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Lake Erie Col Of Osteo Med At Seton Hill Univ (2006).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Matthew Michael Miller Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Matthew Miller 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
- 250 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 2
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 92868 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 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 Miller's NPI number?
The NPI number for Matthew Miller is 1639372360. It was assigned to this individual provider in the NPPES registry on June 8, 2007.
Where is Matthew Miller located?
Matthew Miller practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8888.
What is Matthew Miller's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Matthew Miller enrolled in Medicare?
Yes. Matthew Miller is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Matthew Miller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Miller reassigns Medicare benefits to The Regents Of The University Of California-Irvine (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 Miller'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 Miller was last updated on November 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 Michael Miller, DO · NPI 1639372360
Hospitalist physician in Orange, California. Individual provider, active in the CMS NPPES registry since June 8, 2007.
## Identity
- **NPI:** 1639372360 (Entity type: Individual)
- **Enumerated:** June 8, 2007
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 20A24335 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-8888
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The Regents Of The University Of California-Irvine (NPI 1154479723, Orange, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie Col Of Osteo Med At Seton Hill Univ, class of 2006
## Record status
- **NPPES last updated:** November 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639372360) · Data from the CMS NPPES public registry.