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

David Jeffrey Horwitz, PAC

Individual provider Medical Physician Assistant · NPI 1386739845

David Jeffrey Horwitz, PAC is a Physician Assistant in Arcata, California. Qualified in 1979, 47 years ago. Practices with Open Door Community Health Centers, a 114-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
47
Licensed in
CA
In the registry since
2006
What do these letters mean?
PAC — Physician Assistant, Certified
A physician assistant holding current national certification; usually written PA-C.

See every abbreviation used in this directory →

Practice location Address checks out

1150 Foster Ave
Arcata, CA 95521-5986
Phone: (707) 826-8610
Fax: (707) 826-8623
Show map & directions

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

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence PA10646 (CA)

Record details

NPI number1386739845
Entity typeIndividual (Type 1)
GenderMale
Credentials PAC
Sole proprietorNo
NPI enumeratedOctober 3, 2006
Last updated in NPPESOctober 1, 2024
Certification dateOctober 1, 2024
Mailing address670 Ninth Street, Suite 203, Arcata, CA 95521

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 1979 (47 years in practice)
Group practice Open Door Community Health Centers — 114 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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