Nader Riad Kaldas, M.D.
Internal Medicine Physician · Livermore, CA
Nader Riad Kaldas, M.D. is an internal medicine physician with a practice address in Livermore, California, and NPI 1760492391, issued on Aug 8, 2006. Check the license (California A50637, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nader Riad Kaldas
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A50637 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1370 Concannon Blvd, Livermore, CA 94550
- Phone
- (925) 443-0313
- Enumerated
- Aug 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (925) 443-0315
- Medicaid ID
- 00A506370 CA
- Medicare enrollment
- Enrolled (PECOS I20101203001212); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Nader Riad Kaldas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,410 Medicare Part D claims for 150 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium172 claims
- Amlodipine Besylate123 claims
- Levothyroxine Sodium115 claims
- Losartan Potassium81 claims
- Donepezil Hcl60 claims
- Furosemide60 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 2 group practices
- Jiva Health IncLivermore, CA
- Sutter Bay Medical FoundationFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nader Riad Kaldas among 17,696 internal medicine physician records in California
Nader Riad Kaldas, 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
- Graduated1982 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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).
25 internal medicine physician records list a practice address in Livermore
They are 25 of the 994 NPPES records with a practice address in Livermore, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Livermore → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Alper, M.D.Livermore, CA 945501801880505
- Samata Kanagala, M.DLivermore, CA 945501710902499
- Lyn Lazar, M.D.Livermore, CA 945501427072396
- Gary Peer, MDLivermore, CA 945501245346956
- Irene Rademaker, M.D.Livermore, CA 945501932286929
- Ellen Shibata, MDLivermore, CA 945501386653665
- Betty Tam, MDLivermore, CA 945501770532244
- Connie Teresi, M.D.Livermore, CA 945501922024108
Common questions
What is Nader Riad Kaldas, M.D.'s NPI number?
Nader Riad Kaldas, M.D.'s National Provider Identifier (NPI) is 1760492391, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nader Riad Kaldas, M.D. located?
The NPPES record lists a practice address at 1370 Concannon Blvd, Livermore, CA, 94550. Phone: (925) 443-0313. Providers update this record themselves, so call before visiting.
How can I verify Nader Riad Kaldas, M.D.'s license?
NPPES lists California license number A50637, 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 Nader Riad Kaldas, M.D. prescribe under Medicare Part D?
In 2024, Nader Riad Kaldas, M.D. had 2,410 Medicare Part D claims for 150 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.