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

Individual provider Emergency Medicine Physician · NPI 1235381831

Dr. Joanna Maack, MD is an Emergency Medicine in Pasadena, California. Graduated from Icahn School of Medicine at Mount Sinai in 2005, 21 years ago. Practices with Hmh Emergency Medical Group, Inc, a 56-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
CA
In the registry since
2008
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

100 W California Blvd
Pasadena, CA 91105-3010
Phone: (917) 929-7870
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A109849 (CA)

Record details

NPI number1235381831
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 15, 2008
Last updated in NPPESMarch 12, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2005 (21 years in practice)
Group practice Hmh Emergency Medical Group, Inc. — 56 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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