Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Debra Ann Zillmer, M.D.

Orthopaedic Surgery Physician in Rochester, MN · enumerated 2005 · practices at Mayo Clinic.

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

National Provider Identifier

1114913944

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Registry record

Entity type Individual (Type 1)

Name Debra Ann Zillmer

Credential M.D.

Sex Female

Practice address 200 First Street, Sw, Rochester, MN, 55905

Phone (507) 284-2947

Fax (507) 266-4234

Enumeration date Sep 27, 2005

Last updated in NPPES Sep 12, 2011

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036104352 (IL) Secondary

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 036104352 (IL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 34112 (MN) 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
P00948581	Other	MN	RAILROAD MEDICARE
036104352	Medicaid	IL	-
ENROLLED	Medicaid	MN	-
200042818	Other	IL	RAILROAD MEDICARE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Debra Zillmer?

Debra Zillmer is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-12.