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

Mr. Howard Marx, MD

Individual provider Internal Medicine Physician · NPI 1356307136

Mr. Howard Marx, MD is an Internal Medicine Physician in Pasadena, California. Works from 3 locations. Licensed in California.

Licensed in
CA
In the registry since
2006
Specialties on file
2
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

2090 Woodlyn Ave
Pasadena, CA 91104
Phone: (626) 398-7642
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1500 E Duarte Rd, Duarte, CA 91010 — (626) 359-8111
  • 1500 E Duarte Rd, Duarte, CA 91010 — (626) 359-8111

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence G48962 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence G48962 (CA)

Record details

NPI number1356307136
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 21, 2006
Last updated in NPPESJuly 23, 2018
Mailing address2090 Woodlyn Ave., Pasadena, CA 91104

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