Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark Altchek, MD

Individual provider Internal Medicine Physician · NPI 1154503670

Dr. Mark Altchek, MD is an Internal Medicine Physician in Merced, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1343 W Main St
Merced, CA 95340-4438
Phone: (209) 725-1060
Fax: (209) 725-1064
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G43919 (CA)

Record details

NPI number1154503670
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 27, 2007
Last updated in NPPESNovember 27, 2007
Mailing address7246 Remmet Ave, Canoga Park, CA 91303-1531

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