Dr. Michael George O'Callaghan, DDS

Dr. Michael George O'Callaghan is a Dentist provider (Dentist) practicing in Allegan, MI, registered in the NPPES registry with NPI 1386622017 since 2006. The credential DDS stands for Doctor of Dental Surgery. Practices at Evan A. Be, D.D.S., P.L.C. (listed at the same practice address in NPPES).

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NPI	1386622017
Entity type	Individual (Type 1)
Name	Dr. Michael George O'Callaghan
Credential	DDS
Sex	Male
Practice address	1630 LINCOLN RD, Allegan, MI, 49010
Phone	2696737274
Enumeration date	2006-01-03
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
122300000X	Dentist	Primary	013112	MI

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: Michael O'Callaghan, DDS
NPI: 1386622017
Taxonomy: 122300000X (Dentist)
Address: 1630 LINCOLN RD, Allegan, MI, 49010

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1265849947	Evan Be	Individual	Dentist	Allegan, MI
1245686252	Evan A. Be, D.D.S., P.L.C.	Organization	Dentist	Allegan, MI

Verify this record

Cross-check NPI 1386622017 against the authoritative CMS record: view Dr. Michael George O'Callaghan 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael O'Callaghan?

Michael O'Callaghan is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.