Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mack Su
Dermatology Physician in Boston, MA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023698271
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Registry record
Entity type Individual (Type 1)
Name Mack Su
Sex Male
Practice address 75 Francis St, Boston, MA, 02115
Phone (617) 732-5775
Enumeration date Apr 12, 2021
Last updated in NPPES Jun 30, 2026
Taxonomy & licenses
207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License 1022550 (MA) Secondary
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 1023698271 active?
Yes, as of the latest NPPES snapshot, NPI 1023698271 is active (record last updated 2026-06-30).
How do I verify Mack Su's NPI record?
Cross-check NPI 1023698271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-30.