Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Willis E Martin, M.D.
Dermatology Physician in Berlin, MD · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1902042278
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Registry record
Entity type Individual (Type 1)
Name Dr. Willis E Martin
Credential M.D.
Sex Male
Practice address 9948 N Main St Unit 1, Berlin, MD, 21811
Phone (410) 921-3376
Fax (443) 736-1945
Enumeration date Dec 17, 2008
Last updated in NPPES Jul 21, 2026
Taxonomy & licenses
207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License D0107714 (MD) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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
What specialty is Willis Martin?
Willis Martin is registered in NPPES with the primary taxonomy of Dermatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-21.