Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark J Epstein, M.D.
Specialist in Van Nuys, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598707341
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark J Epstein
Credential M.D.
Sex Male
Practice address 16955 Vanowen St, Van Nuys, CA, 91406
Phone (818) 343-0700
Fax (818) 996-8670
Enumeration date Jun 12, 2006
Last updated in NPPES Nov 13, 2008
Taxonomy & licenses
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
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 Epstein?
Mark Epstein is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Lake Balboa Health Care, Inc. Skilled Nursing Facility · Van Nuys, CA NPI 1053396366 Mark J Epstein, M.D., Inc. A California Medical Corporation Specialist · Van Nuys, CA NPI 1609884741 Christopher Luna Physical Therapy Assistant · Van Nuys, CA NPI 1720542533 Carissa Gonzales Occupational Therapist · Van Nuys, CA NPI 1427517929 Nightfall Healthcare, Inc. Skilled Nursing Facility · Van Nuys, CA NPI 1730892357
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-13.