Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Andrew Kastenmeier, M.D.
Surgery Physician in Milwaukee, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1093914731
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Registry record
Entity type Individual (Type 1)
Name Dr. Andrew Kastenmeier
Credential M.D.
Sex Male
Practice address 9200 W Wisconsin Ave, Division of General Surgery, Suite 3510, Milwaukee, WI, 53226
Phone (414) 805-5751
Fax (414) 259-9225
Enumeration date Jul 12, 2007
Last updated in NPPES Jul 13, 2013
Taxonomy & licenses
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 6026964-1205 (UT) 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.
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 Andrew Kastenmeier?
Andrew Kastenmeier is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Anthony De Franco Cardiovascular Disease Physician · Milwaukee, WI NPI 1215930391 Froedtert Memorial Lutheran Hospital, Inc. General Acute Care Hospital · Milwaukee, WI NPI 1255334173 John Nettrour Orthopaedic Surgery Physician · Milwaukee, WI NPI 1457355810 Melissa Anglin Anesthesiology Physician · Milwaukee, WI NPI 1174522130 Wisconsin Diagnostic Laboratories LLC Clinical Medical Laboratory · Milwaukee, WI NPI 1932109675 Hakki Bolukoglu Cardiovascular Disease Physician · Milwaukee, WI NPI 1356341176 Susan Skaros Medical Physician Assistant · Milwaukee, WI NPI 1699775262 Gary Scherr Anatomic Pathology & Clinical Pathology Physician · Milwaukee, WI NPI 1083614341
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-13.