Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexis Gerstenfeld
Behavior Technician in Muskegon, MI · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477406841
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Registry record
Entity type Individual (Type 1)
Name Alexis Gerstenfeld
Sex X
Practice address 376 E Apple Ave, Muskegon, MI, 49442
Phone (231) 724-1111
Enumeration date Feb 17, 2026
Last updated in NPPES Feb 17, 2026
Taxonomy & licenses
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 1477406841 active?
Yes, as of the latest NPPES snapshot, NPI 1477406841 is active (record last updated 2026-02-17).
How do I verify Alexis Gerstenfeld's NPI record?
Cross-check NPI 1477406841 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 → Frank Sprague Internal Medicine Physician · Muskegon, MI NPI 1134120108 Judith Cohen Clinical Psychologist · Muskegon, MI NPI 1992813380 Julie Vandermeulen Clinical Social Worker · Muskegon, MI NPI 1356452957 David Parnin Clinical Social Worker · Muskegon, MI NPI 1811092513 Anna Moss Clinical Social Worker · Muskegon, MI NPI 1609971324 Zia Khan Psychiatry Physician · Muskegon, MI NPI 1972690253 Pamela Witherell Clinical Social Worker · Muskegon, MI NPI 1477642726 Edward Shier Clinical Social Worker · Muskegon, MI NPI 1003998634
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-17.