NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark L. Nelson, MD, Phd, PC

Dermatology Physician in Bloomfield Hills, MI · enumerated 2008 · authorized official Mark Nelson, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1720259435

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Mark L. Nelson, MD, Phd, PC
Other name <Unavail>
Practice address 60 W Big Beaver Rd, Bloomfield Hills, MI, 48304
Fax (248) 540-1223
Enumeration date Mar 20, 2008
Last updated in NPPES Aug 24, 2009

Taxonomy & classification

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 4301045147 (MI) Primary

Authorized official

Name Mark Nelson
Title President

Other identifiers

Identifier Type State Issuer
070002264 Other MI RAILROAD MEDICARE
0706336300 Other MI BCBS MI
0F34680 Other MI BCBSM TYPE 11

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 → Validate an NPI →

Frequently asked questions

Who is the authorized official for Mark L. Nelson, MD, Phd, PC?
NPPES lists Mark Nelson (President) as the authorized official for this organization.
What is the NPI number for Mark L. Nelson, MD, Phd, PC?
The NPI for Mark L. Nelson, MD, Phd, PC is 1720259435, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-24.