John Mark Deacon, M.D.
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician · Santa Barbara, CA
John Mark Deacon, M.D. is an undersea and hyperbaric medicine (emergency medicine) physician with a practice address in Santa Barbara, California, and NPI 1477567923, issued on Jul 28, 2006. Check the license (California A66064, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Mark Deacon
- Credential
- M.D.
- Primary taxonomy
- Undersea and Hyperbaric Medicine (Emergency Medicine) Physician 207PE0005X
- License number
- A66064 CA
Self-reported in NPPES; status is on the state search - Practice location
- 943 Via Los Padres, Santa Barbara, CA 93111
- Phone
- (805) 680-5544
- Enumerated
- Jul 28, 2006
- Record last updated
- Apr 3, 2026
- Medicaid ID
- 00A660640 CA
- Entity
- Type 1 · individual
8 nearest undersea and hyperbaric medicine (emergency medicine) physician records → All 11 in California → Look up another NPI →
Verify John Mark Deacon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66064Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
John Mark Deacon among 11 undersea and hyperbaric medicine (emergency medicine) physician records in California
John Mark Deacon, M.D. is one of 11 undersea and hyperbaric medicine (emergency medicine) physician records with a practice address in California. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0005X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Undersea and Hyperbaric Medicine (Emergency Medicine) Physician providers in California
There are 11 undersea and hyperbaric medicine (emergency medicine) physician records in California.
All 11 in California → Every provider in Santa Barbara → Undersea and Hyperbaric Medicine (Emergency Medicine) Physician nationwide →
The 8 undersea and hyperbaric medicine (emergency medicine) physician records with the nearest ZIP codes
- John Gambol, M.D.Placentia, CA 928701255339826
- Samuel Miller, D.O.Santa Maria, CA 934541619066693
- Kenneth Kelly, M.D.San Diego, CA 921551730224908
- Andrew Carpenter, MDSan Diego, CA 921031437998648
- Sandra Hayes, MDSan Diego, CA 921031740431444
- William Toppen, M.D.San Diego, CA 921031215399407
- Gary Willard, M.D.Carlsbad, CA 920081588780373
- Russell Gray, MDFairfield, CA 945351427341015
Common questions
What is John Mark Deacon, M.D.'s NPI number?
John Mark Deacon, M.D.'s National Provider Identifier (NPI) is 1477567923, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Mark Deacon, M.D. located?
The NPPES record lists a practice address at 943 Via Los Padres, Santa Barbara, CA, 93111. Phone: (805) 680-5544. Providers update this record themselves, so call before visiting.
How can I verify John Mark Deacon, M.D.'s license?
NPPES lists California license number A66064, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is John Mark Deacon, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.