Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Otterson, MD
Surgery Physician in Milwaukee, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255385001
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Otterson
Credential MD
Sex Female
Practice address Froedtert & Med College Clin - West, 9200 West Wisconsin Avenue, Milwaukee, WI, 53226
Phone (414) 805-3666
Enumeration date May 19, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 |
|---|---|---|---|
| 31590300 | Medicaid | WI | - |
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 NPI 1255385001 active?
Yes, as of the latest NPPES snapshot, NPI 1255385001 is active (record last updated 2007-07-08).
How do I verify Mary Otterson's NPI record?
Cross-check NPI 1255385001 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
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.