NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nathan Stepanek Shaller, M.D.

Anatomic Pathology & Clinical Pathology Physician in Ann Arbor, MI · enumerated 2012.

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

National Provider Identifier

1306191085

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Nathan Stepanek Shaller
Credential M.D.
Sex Male
Practice address 1301 Catherine Street, Ann Arbor, MI, 48109
Phone (734) 764-3270
Fax (734) 615-2964
Enumeration date Jul 18, 2012
Last updated in NPPES May 24, 2018

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 20107-01787 (NC) Primary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 4301101669 (MI) Secondary
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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1306191085 active?
Yes, as of the latest NPPES snapshot, NPI 1306191085 is active (record last updated 2018-05-24).
How do I verify Nathan Shaller's NPI record?
Cross-check NPI 1306191085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-05-24.