Joshua Bryce Kessack, D.O.
Emergency Medicine Physician · Vacaville, CA
Joshua Bryce Kessack, D.O. is an emergency medicine physician with a practice address in Vacaville, California, and NPI 1629503180, issued on Apr 21, 2017. Check the license (California 20A21000, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joshua Bryce Kessack
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 20A21000 CA
5101024380 MI
OS021687 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr, Vacaville, CA 95688
- Phone
- (707) 624-4000
- Enumerated
- Apr 21, 2017
- Record last updated
- Jun 27, 2024
- Medicare enrollment
- Enrolled (PECOS I20240718002256); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 1 Quality Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lamia Alazzawi, PHARM.D.Pharmacist1407380645
- Delaine Alejandro, DOFamily Medicine Physician1487816294
Verify Joshua Bryce Kessack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% more Medicare Part D claims than the average emergency medicine physician in 2024
233 Medicare Part D claims for 152 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 25 claims were for opioids.
Most prescribed
- Ondansetron Odt25 claims
- Cephalexin23 claims
- Oxycodone Hcl16 claims
- Ibuprofen14 claims
- Prednisone12 claims
- Tizanidine Hcl12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Bryce Kessack among 7,751 emergency medicine physician records in California
Joshua Bryce Kessack, D.O. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 78% of them.
- NPI issued2017 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2017 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 emergency medicine physician records list a practice address in Vacaville
They are 20 of the 1,903 NPPES records with a practice address in Vacaville, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Vacaville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Maricel Romelia Dela CruzVacaville, CA 956881396004032
- Nathan Finch, MDVacaville, CA 956881578060547
- Melissa Gaspar, MDVacaville, CA 956881588291496
- Anisa Heravian, M.D.Vacaville, CA 956881861768947
- Aileen Jaber, MDVacaville, CA 956881497807614
- Amanda Jackson, MDVacaville, CA 956881386141844
- Thomas Keown, MDVacaville, CA 956881992368781
- Samuel Kim, M.D.Vacaville, CA 956881528440658
Common questions
What is Joshua Bryce Kessack, D.O.'s NPI number?
Joshua Bryce Kessack, D.O.'s National Provider Identifier (NPI) is 1629503180, issued on Apr 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Bryce Kessack, D.O. located?
The NPPES record lists a practice address at 1 Quality Dr, Vacaville, CA, 95688. Phone: (707) 624-4000. Providers update this record themselves, so call before visiting.
How can I verify Joshua Bryce Kessack, D.O.'s license?
NPPES lists California license number 20A21000, 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.
How much does Joshua Bryce Kessack, D.O. prescribe under Medicare Part D?
In 2024, Joshua Bryce Kessack, D.O. had 233 Medicare Part D claims for 152 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.