Ioannis E. Eleftheriadis, MD
Internal Medicine Physician · Antioch, CA
Ioannis E. Eleftheriadis, MD is an internal medicine physician with a practice address in Antioch, California, and NPI 1679651731, issued on Nov 2, 2006. Check the license (California A61315, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ioannis E. Eleftheriadis
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A61315 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5601 Deer Valley RD, Antioch, CA 94531
- Phone
- (925) 813-6500
- Enumerated
- Nov 2, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00A613150 CA
- Medicare enrollment
- Enrolled (PECOS I20040122000613); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 5601 Deer Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ioannis E. Eleftheriadis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average internal medicine physician in 2024
10,365 Medicare Part D claims for 1,066 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 231 claims were for opioids.
Most prescribed
- Atorvastatin Calcium809 claims
- Lisinopril506 claims
- Amlodipine Besylate439 claims
- Tizanidine Hcl324 claims
- Famotidine312 claims
- Levothyroxine Sodium309 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
- Permanente Medical Group IncWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ioannis E. Eleftheriadis among 17,696 internal medicine physician records in California
Ioannis E. Eleftheriadis, MD 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
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
66 internal medicine physician records list a practice address in Antioch
They are 66 of the 2,184 NPPES records with a practice address in Antioch, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Antioch → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zenen Alpuerto, MDAntioch, CA 945311548215478
- Jalal Atmar, MDAntioch, CA 945311265510846
- Kausalya Bhaskarabhatla, M.D.Antioch, CA 945311003867607
- Melissa Carucci, MDAntioch, CA 945311376621813
- Hsiao-Pin Chin, MDAntioch, CA 945311518045616
- Louis Enrique, M.D.Antioch, CA 945311356363642
- Stephen Foster, MDAntioch, CA 945311851479927
- Letha Jayakrishnan, MDAntioch, CA 945311871671941
Common questions
What is Ioannis E. Eleftheriadis, MD's NPI number?
Ioannis E. Eleftheriadis, MD's National Provider Identifier (NPI) is 1679651731, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ioannis E. Eleftheriadis, MD located?
The NPPES record lists a practice address at 5601 Deer Valley RD, Antioch, CA, 94531. Phone: (925) 813-6500. Providers update this record themselves, so call before visiting.
How can I verify Ioannis E. Eleftheriadis, MD's license?
NPPES lists California license number A61315, 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 Ioannis E. Eleftheriadis, MD prescribe under Medicare Part D?
In 2024, Ioannis E. Eleftheriadis, MD had 10,365 Medicare Part D claims for 1,066 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.