Marjan Koosha Johnson
Family Medicine Physician · Temecula, CA
Marjan Koosha Johnson is a family medicine physician with a practice address in Temecula, California, and NPI 1154068641, issued on May 16, 2022. Check the license (California 21797, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marjan Koosha Johnson
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 21797 CA
Self-reported in NPPES; status is on the state search - Practice location
- 31700 Temecula Pkwy Ste 1, Temecula, CA 92592
- Phone
- (951) 331-2527
- Enumerated
- May 16, 2022
- Record last updated
- May 29, 2026
- Medicare enrollment
- Enrolled (PECOS I20260610002391); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 31700 Temecula Pkwy Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aditya AgrawalEmergency Medicine Physician1174109797
- Katelyn Bachand, DOStudent in an Organized Health Care Education/Training Program1912750613
- Taylor Bashara, MDEmergency Medicine Physician1447990734
- Brandyn Bobb, MDEmergency Medical Services (Emergency Medicine) Physician1427635556
- Abigail Chamberlain, DOFamily Medicine Physician1629822507
- Brian Dykstra, MDStudent in an Organized Health Care Education/Training Program1326892910
Verify Marjan Koosha Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 21797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average family medicine physician in 2024
131 Medicare Part D claims for 49 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium15 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.
Marjan Koosha Johnson among 17,133 family medicine physician records in California
Marjan Koosha Johnson is one of 17,133 family 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2025 · median 2005 among the 10,652 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 family medicine physician records list a practice address in Temecula
They are 80 of the 4,057 NPPES records with a practice address in Temecula, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Temecula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Emmanuel Awdishu, MDTemecula, CA 925921720630205
- Carrie Bacon, M.D.Temecula, CA 925921578576047
- Joshua Blosser, DOTemecula, CA 925921922629864
- Curtiss Combs, M.D.Temecula, CA 925921710925409
- Sylvia Gisi, M.D.Temecula, CA 925921720052541
- Tamara KelleyTemecula, CA 925921851456354
- M McDonald, M.D.Temecula, CA 925921093769150
- Robert McDonald, MDTemecula, CA 925921285671305
Common questions
What is Marjan Koosha Johnson's NPI number?
Marjan Koosha Johnson's National Provider Identifier (NPI) is 1154068641, issued on May 16, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Marjan Koosha Johnson located?
The NPPES record lists a practice address at 31700 Temecula Pkwy Ste 1, Temecula, CA, 92592. Phone: (951) 331-2527. Providers update this record themselves, so call before visiting.
How can I verify Marjan Koosha Johnson's license?
NPPES lists California license number 21797, 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 Marjan Koosha Johnson prescribe under Medicare Part D?
In 2024, Marjan Koosha Johnson had 131 Medicare Part D claims for 49 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.