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

Dr. Zachary Daniel Preefer, DO

Individual provider Pain Medicine (Anesthesiology) Physician · NPI 1093202566

Dr. Zachary Daniel Preefer, DO is an Anesthesiology in San Jose, California. Graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 2018, 8 years ago. Practices with Cep America - Anesthesia PC, a 850-clinician group and accepts Medicare assignment. Licensed in California and Washington.

Years since qualifying
8
Trained at
Des Moines University of Osteopathic Medicine and Health Sciences
Licensed in
CA, WA
In the registry since
2018
Specialties on file
3
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.

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Practice location Address checks out

2105 Forest Ave
San Jose, CA 95128-1471
Phone: (408) 947-2500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 21899 (CA)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence OP61303160 (WA)
Anesthesiology Physician Taxonomy 207L00000X · Licence OP61303160 (WA)

Record details

NPI number1093202566
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 19, 2018
Last updated in NPPESMarch 4, 2024
Certification dateMarch 4, 2024

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolDES MOINES UNIVERSITY OF OSTEOPATHIC MEDICINE AND HEALTH SCIENCES
Graduated 2018 (8 years in practice)
Group practice Cep America - Anesthesia Pc — 850 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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