Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Corydon Walter Siffring, MD

Surgical Critical Care Physician in Escanaba, MI · enumerated 2006.

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

National Provider Identifier

1891728887

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Registry record

Entity type Individual (Type 1)

Name Corydon Walter Siffring

Credential MD

Sex Male

Practice address 3401 Ludington St, Escanaba, MI, 49829

Phone (906) 786-5707

Fax (217) 757-6573

Enumeration date Jul 10, 2006

Last updated in NPPES Mar 2, 2026

Taxonomy & licenses

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License EMC0002596 (MI) Secondary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License 036144511 (IL) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036144511 (IL) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD046448L (PA) Secondary

2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License MD046448L (PA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MC-2223 (ID) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License MD046448L (PA) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License 036144511 (IL) Secondary

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License 41749 (TN) 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
3830576	Medicaid	TN	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Corydon Siffring?

Corydon Siffring is registered in NPPES with the primary taxonomy of Surgical Critical Care Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-02.