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

Dr. Zachary Michael Zwolak, DO

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1265695571

Dr. Zachary Michael Zwolak, DO is an Addiction Medicine in Ventura, California. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2008, 18 years ago. Practices with County of Ventura, a 274-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
18
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
CA
In the registry since
2008
Specialties on file
2
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.

See every abbreviation used in this directory →

Practice location Address checks out

300 Hillmont Ave
Ventura, CA 93003-1651
Phone: (805) 652-6100
Fax: (805) 652-3252
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1280 S Victoria Avenue #250, Ventura, CA 93003-6521 — (805) 351-0745

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary) Taxonomy 207QA0401X · Licence 20A12298 (CA)
Addiction Medicine (Preventive Medicine) Physician Taxonomy 2083A0300X · Licence 20A12298 (CA)

Record details

NPI number1265695571
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 7, 2008
Last updated in NPPESAugust 8, 2024
Certification dateAugust 8, 2024

Medicare enrollment

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

Medicare specialtyADDICTION MEDICINE
Also practisesFAMILY PRACTICE
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2008 (18 years in practice)
Group practice County Of Ventura — 274 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Ventura