JOHN MICHAEL MALLEIS MD
NPI 1144511643
Internal Medicine in Medford, OR
About John Michael Malleis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MICHAEL MALLEIS MD (NPI 1144511643) is an individual internal medicine provider in Medford, Oregon, licensed in Oregon (MD174285) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS, is affiliated with Peacehealth Cottage Grove Community Medical Center, and is a graduate of Wayne State University School Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses 2
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
John Michael Malleis 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 Reassignments
4Medicare enrollment records show John Malleis reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cottage Grove, OR 97424
- Reassigned Medicare billing, Oregon enrollment
- 155 clinicians in this Medicare group
Creswell, OR 97426
- Reassigned Medicare billing, Oregon enrollment
- 83 clinicians in this Medicare group
Eugene, OR 97401
- Reassigned Medicare billing, Oregon enrollment
- 412 clinicians in this Medicare group
Florence, OR 97439
- Reassigned Medicare billing, Oregon enrollment
- 117 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Peacehealth Cottage Grove Community Medical Center
Critical Access Hospitals · Cottage Grove, ORPeace Harbor Medical Center
Critical Access Hospitals · Florence, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97504 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.
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 John Malleis's NPI number?
The NPI number for John Malleis is 1144511643. It was assigned to this individual provider in the NPPES registry on May 2, 2011.
Where is John Malleis located?
John Malleis practices at 2859 State St Ste 102, Medford, OR 97504. The listed phone number is (248) 459-5290.
What is John Malleis's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Malleis enrolled in Medicare?
Yes. John Malleis 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 John Malleis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Malleis reassigns Medicare benefits to 4 organizations: Peacehealth (Cottage Grove, OR), Peacehealth Medical Group Cottage Grove (Creswell, OR), Peacehealth Medical Group (Eugene, OR) and Peacehealth (Florence, OR). 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 John Malleis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Malleis accept?
Health plans from BridgeSpan Health Company, Kaiser Permanente, Moda Health Plan, Inc., PacificSource Health Plans and Providence Health Plan and 1 other insurer list John Malleis 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 John Malleis affiliated with any hospitals?
According to CMS data, John Malleis is affiliated with Peacehealth Cottage Grove Community Medical Center and Peace Harbor Medical Center.
When was this NPI record last updated?
The NPPES record for John Malleis was last updated on December 3, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.
# John Michael Malleis, MD · NPI 1144511643
Internal Medicine physician in Medford, Oregon. Individual provider, active in the CMS NPPES registry since May 2, 2011.
## Identity
- **NPI:** 1144511643 (Entity type: Individual)
- **Enumerated:** May 2, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD174285 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 2859 STATE ST STE 102, Medford, OR 97504-8495
- **Phone:** (248) 459-5290
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Peacehealth (NPI 1902892391, Cottage Grove, OR); Peacehealth Medical Group Cottage Grove (NPI 1780631267, Creswell, OR); Peacehealth Medical Group (NPI 1447207287, Eugene, OR); Peacehealth (NPI 1578552402, Florence, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** December 3, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1144511643) · Data from the CMS NPPES public registry.