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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew Tim Shen, M.D.

Anesthesiology Physician in Waterloo, IA · enumerated 2012.

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

National Provider Identifier

1538423231

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Registry record

Entity type Individual (Type 1)
Name Dr. Andrew Tim Shen
Credential M.D.
Sex Male
Practice address 3421 W 9th St, Waterloo, IA, 50702
Phone (319) 272-5000
Fax (319) 272-5264
Enumeration date Jun 27, 2012
Last updated in NPPES Dec 15, 2019

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License D0081900 (MD) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MT-201576 (PA) Secondary
207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License MD-46291 (IA) 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

Where does Andrew Shen practice?
The practice location on file with NPPES is in Waterloo, IA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Andrew Shen?
The National Provider Identifier (NPI) for Andrew Shen is 1538423231, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-15.