Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joseph Timothy Martin
Nurse Practitioner in Oakland, MD · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619896396
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Registry record
Entity type Individual (Type 1)
Name Joseph Timothy Martin
Sex Male
Practice address 251 N 4th St, Oakland, MD, 21550
Phone (301) 533-4000
Enumeration date Jul 15, 2026
Last updated in NPPES Jul 15, 2026
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 80788 (WV) Primary
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 is the NPI number for Joseph Martin?
The National Provider Identifier (NPI) for Joseph Martin is 1619896396, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joseph Martin practice?
The practice location on file with NPPES is in Oakland, MD. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Margaret Kaiser Internal Medicine Physician · Oakland, MD NPI 1396732129 Robert Coughlin Emergency Medicine Physician · Oakland, MD NPI 1578516241 Joanne Hodges Emergency Medicine Physician · Oakland, MD NPI 1083647267 Karen Hershfeld Physician Assistant · Oakland, MD NPI 1104837269 Lance Rhodes Pharmacist · Oakland, MD NPI 1578670683 Steven Silverman Anesthesiology Physician · Oakland, MD NPI 1407950694 Luther Neubert Certified Registered Nurse Anesthetist · Oakland, MD NPI 1043398555 Sandra Killian Certified Registered Nurse Anesthetist · Oakland, MD NPI 1144308669
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-15.