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

Dr. Naili Alexander Chen, DO, MPH, MASC

Individual provider Internal Medicine Physician · NPI 1649251661

Dr. Naili Alexander Chen, DO, MPH, MASC is an Internal Medicine Physician in Lancaster, California. Practices as a sole proprietor and works from 3 locations. Licensed in California and Pennsylvania.

Licensed in
CA, PA
In the registry since
2005
Specialties on file
7
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.
MPH — Master of Public Health
A graduate degree in population health.

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Practice location Address checks out

44439 17th St W
Lancaster, CA 93534-2831
Phone: (661) 729-8655
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234-4504 — (210) 539-9582
  • 1100 Wilford Hall Loop Bldg 4554, Jbsa Lackland, TX 78236-5638 — (210) 539-9582

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 20A7408 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence OS-009459-L (PA)
Preventive Medicine/Occupational Environmental Medicine Physician Taxonomy 2083P0500X · Licence 20A7408 (CA)
Hospitalist Physician Taxonomy 208M00000X · Licence OS-009459L (PA)
Hospitalist Physician Taxonomy 208M00000X · Licence 20A7048 (CA)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence 20A7408 (CA)
Aerospace Medicine Physician Taxonomy 2083A0100X · Licence 20A7408 (CA)

Record details

NPI number1649251661
Entity typeIndividual (Type 1)
GenderMale
Credentials DO , MPH , MASC
Sole proprietorYes
NPI enumeratedNovember 8, 2005
Last updated in NPPESMay 20, 2026
Certification dateMay 20, 2026

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