DR. ROM SAMUEL LEIDNER MD
NPI 1801908702
Internal Medicine - Medical Oncology in Portland, OR
About Dr. Rom Samuel Leidner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROM SAMUEL LEIDNER MD (NPI 1801908702) is an individual medical oncology provider in Portland, Oregon, licensed in Oregon (MD159938) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Providence Portland Medical Center, and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Rom Samuel Leidner 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
2Medicare enrollment records show Rom Leidner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 676 clinicians in this Medicare group
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 1,501 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence Portland Medical Center
Acute Care Hospitals · Portland, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97213 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
PORTLAND, OR 97213
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 Rom Leidner's NPI number?
The NPI number for Rom Leidner is 1801908702. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is Rom Leidner located?
Rom Leidner practices at 4805 NE Glisan St Suite 6n40, Portland, OR 97213. The listed phone number is (503) 215-5696.
What is Rom Leidner's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Rom Leidner enrolled in Medicare?
Yes. Rom Leidner 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 Rom Leidner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rom Leidner reassigns Medicare benefits to 2 organizations: Providence Health & Services - Oregon (Portland, OR) and Providence Health & Services - Oregon (Portland, 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 Rom Leidner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rom Leidner accept?
Health plans from Providence Health Plan list Rom Leidner 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 Rom Leidner affiliated with any hospitals?
According to CMS data, Rom Leidner is affiliated with Providence Portland Medical Center.
When was this NPI record last updated?
The NPPES record for Rom Leidner was last updated on March 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Rom Samuel Leidner, MD · NPI 1801908702
Medical Oncology physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1801908702 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** MD159938 (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 4805 NE GLISAN ST, SUITE 6N40, Portland, OR 97213-2933
- **Phone:** (503) 215-5696
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Providence Health & Services - Oregon (NPI 1003991845, Portland, OR); Providence Health & Services - Oregon (NPI 1316197692, Portland, OR) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1999
## Record status
- **NPPES last updated:** March 19, 2021
- **Other identifiers:** Other P00287631; Other 0039581 (WA); Medicaid 8441743 (WA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1801908702) · Data from the CMS NPPES public registry.