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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cay Michael Mierisch, MD

Orthopaedic Surgery Physician in Corvallis, OR · enumerated 2006 · practices at Good Samaritan Hospital Corvallis.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1083688931

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Registry record

Entity type Individual (Type 1)
Name Cay Michael Mierisch
Credential MD
Sex Male
Practice address 3620 Nw Samaritan Dr Ste 201, Corvallis, OR, 97330
Phone (541) 768-6300
Enumeration date Feb 16, 2006
Last updated in NPPES Aug 13, 2021

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 0101-237955 (VA) Secondary
207XS0106X Orthopaedic Hand Surgery Physician Allopathic & Osteopathic Physicians · License 0101237955 (VA) Secondary
207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD205645 (OR) Primary
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
1083688931 Other VA INTOTAL
1083688931 Other VA CIGNA
1083688931 Other VA MEDICAID OF NORTH CAROLINA
1083688931 Medicaid VA -
1083688931 Other VA UMWA
1083688931 Other VA HEALTHKEEPERS
1083688931 Other VA VA PREMIER
1083688931 Other VA UNITED HEALTHCARE
3810010052 Other VA MEDICAID OF WEST VIRGINIA
P00239901 Other VA RAILROAD MEDICARE
1083688931 Other VA HEALTHKEEPERS PLUS
1083688931 Other VA SOUTHERN HEALTH/CARENET/CARELINK/COVENTRY
1083688931 Other VA VIRGINIA HEALTH NETWORK
371194700 Other VA BLACK LUNG
1083688931 Other VA HUMANA MEDICARE
1083688931 Other VA AETNA
1083688931 Other VA ANTHEM
540506332004 Other VA TRICARE/CHAMPUS
1083688931 Other VA GATEWAY
1083688931 Other VA OPTIMA HEALTH PLAN

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.

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Frequently asked questions

Is NPI 1083688931 active?
Yes, as of the latest NPPES snapshot, NPI 1083688931 is active (record last updated 2021-08-13).
How do I verify Cay Mierisch's NPI record?
Cross-check NPI 1083688931 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-13.