Jason Wyeth Koob, M.D.
Emergency Medicine Physician · San Francisco, CA
Jason Wyeth Koob, M.D. is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1093943821, issued on Jul 1, 2009. Check the license (California A128794, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jason Wyeth Koob
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A128794 CA
Self-reported in NPPES; status is on the state search - Practice location
- 928 Harrison St, San Francisco, CA 94107
- Phone
- (415) 926-5818
- Enumerated
- Jul 1, 2009
- Record last updated
- Jan 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (844) 610-6728
- Medicare enrollment
- Enrolled (PECOS I20141201001318); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Jason Wyeth Koob in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A128794Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average emergency medicine physician in 2024
125 Medicare Part D claims for 91 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 25 claims were for opioids.
Most prescribed
- Cephalexin24 claims
- Hydrocodone-Acetaminophen21 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
- Team Physicians OF Northern California Medical Group IncSan Ramon, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jason Wyeth Koob among 7,751 emergency medicine physician records in California
Jason Wyeth Koob, M.D. 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 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2011 among the 4,560 with a school on file
- Record last updated2016 · 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).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Elizabeth Barreras-Rivest, MDSan Francisco, CA 941071245729086
- Steven Kaminski, MDSan Francisco, CA 941071386692820
- Sherry Bird, MDSan Francisco, CA 941091245200336
- Reid Brackin, M.DSan Francisco, CA 941091538114004
- Lucia Chen-Luftig, M.D.San Francisco, CA 941091922022508
- Roel Farrales, MDSan Francisco, CA 941091821073198
- Steven Groke, MDSan Francisco, CA 941051255629994
- Gregg Miller, M.D.San Francisco, CA 941091386756807
Common questions
What is Jason Wyeth Koob, M.D.'s NPI number?
Jason Wyeth Koob, M.D.'s National Provider Identifier (NPI) is 1093943821, issued on Jul 1, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jason Wyeth Koob, M.D. located?
The NPPES record lists a practice address at 928 Harrison St, San Francisco, CA, 94107. Phone: (415) 926-5818. Providers update this record themselves, so call before visiting.
How can I verify Jason Wyeth Koob, M.D.'s license?
NPPES lists California license number A128794, 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 Jason Wyeth Koob, M.D. prescribe under Medicare Part D?
In 2024, Jason Wyeth Koob, M.D. had 125 Medicare Part D claims for 91 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.