Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lynn E Hahnfeld, MD
Urology Physician in Madison, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861431769
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Registry record
Entity type Individual (Type 1)
Name Lynn E Hahnfeld
Credential MD
Sex Female
Practice address 752 N High Point Rd, Madison, WI, 53717
Phone (608) 824-4000
Fax (608) 824-4671
Enumeration date Jun 6, 2006
Last updated in NPPES Nov 18, 2020
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 |
|---|---|---|---|
| 1861431769 | 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 1861431769 active?
Yes, as of the latest NPPES snapshot, NPI 1861431769 is active (record last updated 2020-11-18).
How do I verify Lynn Hahnfeld's NPI record?
Cross-check NPI 1861431769 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 2020-11-18.