Mark Anthony Deleon Kellam

Mark Anthony Deleon Kellam is a Counselor provider (Counselor) practicing in Holbrook, MA, registered in the NPPES registry with NPI 1659887735 since 2017.

✓ Active NPI ✓ Valid NPI checksum

NPI	1659887735
Entity type	Individual (Type 1)
Name	Mark Anthony Deleon Kellam
Sex	Male
Practice address	110 LONGMEADOW DR, Holbrook, MA, 02343
Phone	9785786346
Enumeration date	2017-12-27
Last updated in NPPES	2017-12-27

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
101Y00000X	Counselor	Primary	—	—

Copy-ready billing details

Provider: Mark Deleon Kellam
NPI: 1659887735
Taxonomy: 101Y00000X (Counselor)
Address: 110 LONGMEADOW DR, Holbrook, MA, 02343

Verify this record

Cross-check NPI 1659887735 against the authoritative CMS record: view Mark Anthony Deleon Kellam on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

Where does Mark Deleon Kellam practice?

The practice location on file with NPPES is in Holbrook, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Deleon Kellam?

The National Provider Identifier (NPI) for Mark Deleon Kellam is 1659887735, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-12-27.