License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Petruska Maak:

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Specialties & Research

Dr. Petruska Maak, MD is board certified in Pediatrics.

Education & Awards

Dr. Maak graduated from Central University Of Venezuela School Of Medicine.


Dr. Maak has 8 hospital affiliations:

  • Kaiser Foundation Hospital - Walnut Creek 
  • Kaiser Foundation Hospital - Martinez/Walnut 


  • Spanish

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Additional Information
Dr. Petruska Geammette Maak MD is a female Pediatrician, has 12 years of experience and practices in Pediatrics.
Where does Dr. Petruska G. Maak practice?
Dr. Petruska Maak has 2 office locations.
Dr. Petruska Maak practices Pediatrics near San Jose, CA.
Additional practice locations include: Walnut Creek, CA.
See San Jose Pediatricians.