Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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John Mark Deacon, MD

Individual provider Undersea and Hyperbaric Medicine (Emergency Medicine) Physician · NPI 1477567923

John Mark Deacon, MD is an Undersea and Hyperbaric Medicine (Emergency Medicine) Physician in Santa Barbara, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

943 Via Los Padres
Santa Barbara, CA 93111-1325
Phone: (805) 680-5544
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Undersea and Hyperbaric Medicine (Emergency Medicine) Physician (primary) Taxonomy 207PE0005X · Licence A66064 (CA)

Record details

NPI number1477567923
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 28, 2006
Last updated in NPPESApril 3, 2026
Certification dateApril 3, 2026

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients46
Services billed 66 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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