Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ma Katrina Dy, M.D.
Dermatology Physician in Naples, FL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598743601
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Registry record
Entity type Individual (Type 1)
Name Ma Katrina Dy
Credential M.D.
Sex Female
Practice address 261 9th St S, Naples, FL, 34102
Phone (239) 216-4337
Fax (239) 261-5594
Enumeration date Jan 9, 2006
Last updated in NPPES Feb 17, 2021
Taxonomy & licenses
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 236945 (MA) Secondary
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License ME147373 (FL) 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.
Frequently asked questions
Is NPI 1598743601 active?
Yes, as of the latest NPPES snapshot, NPI 1598743601 is active (record last updated 2021-02-17).
How do I verify Ma Katrina Dy's NPI record?
Cross-check NPI 1598743601 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-02-17.