Charles Joseph Renner, M.D.
Family Medicine Physician · Concord, CA
Charles Joseph Renner, M.D. is a family medicine physician with a practice address in Concord, California, and NPI 1669439733, issued on May 1, 2006. Check the license (California G67128, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Joseph Renner
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G67128 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5161 Clayton Road, Concord, CA 94521
- Phone
- (925) 687-2200
- Enumerated
- May 1, 2006
- Record last updated
- Nov 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (925) 689-5608
- Medicare enrollment
- Enrolled (PECOS I20100805000473); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Charles Joseph Renner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G67128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average family medicine physician in 2024
4,616 Medicare Part D claims for 460 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium331 claims
- Rosuvastatin Calcium312 claims
- Amlodipine Besylate269 claims
- Losartan Potassium253 claims
- Lisinopril221 claims
- Levothyroxine Sodium208 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
- John Muir Physician NetworkConcord, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Joseph Renner among 17,133 family medicine physician records in California
Charles Joseph Renner, M.D. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1988 · median 2005 among the 10,652 with a school on file
- Record last updated2018 · 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).
38 family medicine physician records list a practice address in Concord
They are 38 of the 9,328 NPPES records with a practice address in Concord, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Concord → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Anthony Ryan Aguirre, MDConcord, CA 945211386907624
- Diane Chandler, D.O.Concord, CA 945211760466312
- Jaskaran Khela, DOConcord, CA 945211073074944
- Elisabeth Renner, M.D.Concord, CA 945211275642910
- Tanya Threewitt, M.D.Concord, CA 945211699708610
- Michael Varon, M.D.Concord, CA 945211386662641
- Kristina Carpenter, D.O.Concord, CA 945201952741985
- Rachelle Hanft, MDConcord, CA 945201437306313
Common questions
What is Charles Joseph Renner, M.D.'s NPI number?
Charles Joseph Renner, M.D.'s National Provider Identifier (NPI) is 1669439733, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Joseph Renner, M.D. located?
The NPPES record lists a practice address at 5161 Clayton Road, Concord, CA, 94521. Phone: (925) 687-2200. Providers update this record themselves, so call before visiting.
How can I verify Charles Joseph Renner, M.D.'s license?
NPPES lists California license number G67128, 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 Charles Joseph Renner, M.D. prescribe under Medicare Part D?
In 2024, Charles Joseph Renner, M.D. had 4,616 Medicare Part D claims for 460 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.