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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tammy J. Miller, M.D.

Nephrology Physician in York, PA · enumerated 2007 · practices at Nephrology Associates of York PC.

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

National Provider Identifier

1699981746

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Registry record

Entity type Individual (Type 1)
Name Tammy J. Miller
Credential M.D.
Sex Female
Practice address 1920 Queenswood Dr, Suite 200, York, PA, 17403
Phone (717) 747-3566
Fax (717) 747-3678
Enumeration date May 15, 2007
Last updated in NPPES Aug 14, 2012

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD424777 (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What specialty is Tammy Miller?
Tammy Miller is registered in NPPES with the primary taxonomy of Nephrology 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 2012-08-14.