Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Eric R. Muller, MD

Cardiovascular Disease Physician in Springfield, OR · enumerated 2008 · practices at University Professional Services.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1841467347

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Registry record

Entity type Individual (Type 1)

Name Eric R. Muller

Credential MD

Sex Male

Practice address Springfield, OR, 97477

Phone (541) 484-4332

Enumeration date May 13, 2008

Last updated in NPPES Apr 28, 2023

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD170237 (OR) Secondary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License MD170237 (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
500677452	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.

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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 Eric Muller?

Eric Muller is registered in NPPES with the primary taxonomy of Cardiovascular Disease 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 2026-07-11. Provider record last updated 2023-04-28.