Johnson O. Adeyanju, M.D.
Internal Medicine Physician · Concord, CA
Johnson O. Adeyanju, M.D. is an internal medicine physician with a practice address in Concord, California, and NPI 1467403147, issued on May 15, 2006. Check the license (California A49920, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Johnson O. Adeyanju
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A49920 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Grant St, Concord, CA 94520
- Phone
- (925) 677-0500
- Enumerated
- May 15, 2006
- Record last updated
- Jun 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (925) 677-0519
- Medicaid ID
- 00A499200 CA
- Medicare enrollment
- Enrolled (PECOS I20090107000028); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2700 Grant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kris Arneson, P.T.Physical Therapist1669596425
- Alicia Bakkum, NPClinical Nurse Specialist1982793220
- Mike Bannout, M.D.Internal Medicine Physician1598784662
- Olawunmi Beckley, M.D.Family Medicine Physician1497789499
Verify Johnson O. Adeyanju in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A49920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
990 Medicare Part D claims for 796 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Azithromycin112 claims
- Doxycycline Monohydrate86 claims
- Paxlovid75 claims
- Cephalexin72 claims
- Amoxicillin66 claims
- Albuterol Sulfate Hfa42 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 MIPS final score for 2023 (Medicare payment program): 89.8 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).
Industry payments in 2024: $20.23
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- John Muir Physician NetworkConcord, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnson O. Adeyanju among 17,696 internal medicine physician records in California
Johnson O. Adeyanju, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1989 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Concord → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jose Arias-VeraConcord, CA 945201497826283
- Mike Bannout, M.D.Concord, CA 945201598784662
- David Bressler, M.D.Concord, CA 945201962456210
- Anna Chang, M.D.Concord, CA 945201568402931
- Lori Danze, M.D.Concord, CA 945201003923236
- Robert Davidson, M.D.Concord, CA 945201659311108
- Chinnavuth De Monteiro, M.D.Concord, CA 945201558392449
- John Hiss, M.D.Concord, CA 945201386663052
Common questions
What is Johnson O. Adeyanju, M.D.'s NPI number?
Johnson O. Adeyanju, M.D.'s National Provider Identifier (NPI) is 1467403147, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Johnson O. Adeyanju, M.D. located?
The NPPES record lists a practice address at 2700 Grant St, Concord, CA, 94520. Phone: (925) 677-0500. Providers update this record themselves, so call before visiting.
How can I verify Johnson O. Adeyanju, M.D.'s license?
NPPES lists California license number A49920, 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 Johnson O. Adeyanju, M.D. prescribe under Medicare Part D?
In 2024, Johnson O. Adeyanju, M.D. had 990 Medicare Part D claims for 796 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Johnson O. Adeyanju, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.8 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.