Dr. Mark Lawrence Dewitt, DDS

Dr. Mark Lawrence Dewitt is a General Practice Dentistry provider (Dentist) practicing in Lansing, MI, registered in the NPPES registry with NPI 1962614875 since 2007. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1962614875
Entity type	Individual (Type 1)
Name	Dr. Mark Lawrence Dewitt
Credential	DDS
Sex	Male
Practice address	Lansing, MI, 48917
Phone	5173237926
Fax	5173238986
Enumeration date	2007-05-04
Last updated in NPPES	2021-07-27

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	901013326	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: Mark Dewitt, DDS
NPI: 1962614875
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: Lansing, MI, 48917

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1790875003	Barry M. Doren, D.D.S., P.C.	Organization	Dental Clinic/Center	Lansing, MI
1063597300	Julia Gudmundsen	Individual	Dentist	Lansing, MI
1194861823	William H. North DDS PC	Organization	Dental Clinic/Center	Lansing, MI
1346361847	William North	Individual	General Practice Dentistry	Lansing, MI
1437375441	Richard Reynolds	Individual	General Practice Dentistry	Lansing, MI
1578782454	Barry Doren	Individual	General Practice Dentistry	Lansing, MI
1659539831	S. William Cheah, D.D.S., P.C.	Organization	General Practice Dentistry	Lansing, MI
1144622655	Julia M Gudmundsen PC	Organization	General Practice Dentistry	Lansing, MI

Verify this record

Cross-check NPI 1962614875 against the authoritative CMS record: view Dr. Mark Lawrence Dewitt 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 Mark Dewitt?

Mark Dewitt is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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 2021-07-27.