Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. James C Ritzenthaler, M.D.
Specialist in Bend, OR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1881622157
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Registry record
Entity type Individual (Type 1)
Name Dr. James C Ritzenthaler
Credential M.D.
Sex Male
Practice address 1501 Ne Medical Center Dr, Bend, OR, 97701
Phone (541) 382-2811
Fax (541) 322-3501
Enumeration date Jun 28, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 221754 | Medicaid | OR | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1881622157 active?
Yes, as of the latest NPPES snapshot, NPI 1881622157 is active (record last updated 2007-07-08).
How do I verify James Ritzenthaler's NPI record?
Cross-check NPI 1881622157 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → William Schmidt Hematology & Oncology Physician · Bend, OR NPI 1467455386 Mark Belza Neurological Surgery Physician · Bend, OR NPI 1740284777 Tammy Bull Obstetrics & Gynecology Physician · Bend, OR NPI 1689678278 Christopher Richards Emergency Medicine Physician · Bend, OR NPI 1528062056 Jeffrey Davis Internal Medicine Physician · Bend, OR NPI 1942205752 James Ockner Diagnostic Radiology Physician · Bend, OR NPI 1366448821 Andrew Sargent Physician Assistant · Bend, OR NPI 1184624223 Adam Williams Allergy & Immunology Physician · Bend, OR NPI 1265433445
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.