Duncan Johnston
Emergency Medical Services (Emergency Medicine) Physician · Sacramento, CA
Duncan Johnston is an emergency medical services (emergency medicine) physician with a practice address in Sacramento, California, and NPI 1669770574, issued on Mar 2, 2011. Check the license (California A140788, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duncan Johnston
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- A140788 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4610 X St, Sacramento, CA 95817
- Phone
- (530) 848-8552
- Enumerated
- Mar 2, 2011
- Record last updated
- Nov 8, 2023
- Medicare enrollment
- Enrolled (PECOS I20160726002056); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at 4610 X St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ferheen AbbasiStudent in an Organized Health Care Education/Training Program1518745108
- Geraldine Abilo CardenasSpecialist1871481606
- James AboagyeStudent in an Organized Health Care Education/Training Program1235955998
- Christopher AdamsStudent in an Organized Health Care Education/Training Program1285223446
- Erika AdamsStudent in an Organized Health Care Education/Training Program1528769767
- Lindsay AdamsSpecialist1417831991
Verify Duncan Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A140788Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
374 Medicare Part D claims for 273 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 33 claims were for opioids.
Most prescribed
- Cephalexin43 claims
- Doxycycline Monohydrate40 claims
- Ondansetron Odt28 claims
- Cefdinir26 claims
- Hydrocodone-Acetaminophen26 claims
- Prednisone23 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pacific Redwood Medical Group IncUkiah, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Duncan Johnston among 233 emergency medical services (emergency medicine) physician records in California
Duncan Johnston is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 73% of them.
- NPI issued2011 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2013 · median 2002 among the 99 with a school on file
- Record last updated2023 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Sacramento → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Jessica Wiser, M.D.Sacramento, CA 958171245493808
- Ralph Koo, MDSacramento, CA 958161205932050
- Usama Khan, MDSacramento, CA 958231982353702
- Emmanuel RutazihanaWoodland, CA 957761538741103
- Jaskaranpreet Sahota, FNPMarysville, CA 959011407497837
- Alan Stesin, M.D.Chico, CA 959261346369709
- John Taylor, M.D.Cameron Park, CA 956821477540896
- Douglas Fischer, NPOroville, CA 959661750893640
Common questions
What is Duncan Johnston's NPI number?
Duncan Johnston's National Provider Identifier (NPI) is 1669770574, issued on Mar 2, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Duncan Johnston located?
The NPPES record lists a practice address at 4610 X St, Sacramento, CA, 95817. Phone: (530) 848-8552. Providers update this record themselves, so call before visiting.
How can I verify Duncan Johnston's license?
NPPES lists California license number A140788, 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 Duncan Johnston prescribe under Medicare Part D?
In 2024, Duncan Johnston had 374 Medicare Part D claims for 273 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. Part D covers Medicare prescriptions only.
What is Duncan Johnston's MIPS final score?
The 2023 MIPS final score is 94.7 of 100, reported for the practice group. 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.