NPPES file of Aug 9, 2026

Carlos Arguedas

Internal Medicine Physician · Los Alamitos, CA

Carlos Arguedas is an internal medicine physician with a practice address in Los Alamitos, California, and NPI 1023075579, issued on Apr 27, 2006. Check the license (California A45750, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023075579
Name
Carlos Arguedas
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A45750 CA
Self-reported in NPPES; status is on the state search
Practice location
5300 Katella Ave, Los Alamitos, CA 90720
Phone
(562) 429-1200
Enumerated
Apr 27, 2006
Record last updated
May 29, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(562) 429-8070
Medicare enrollment
Enrolled (PECOS I20090520000109); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5300 Katella Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ramandeep Brar, M.D.Cardiovascular Disease Physician1821165549
  2. Valerie Cacho, MDSleep Medicine (Internal Medicine) Physician1528296845
  3. Stuart Fischer, M.D.Cardiovascular Disease Physician1083656086
  4. Steven Forman, M.D.Cardiovascular Disease Physician1023059763
  5. Diana GlovaciCardiovascular Disease Physician1366805590
  6. Robert Lee, M.D.Interventional Cardiology Physician1861684201

Verify Carlos Arguedas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A45750
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3% fewer Medicare Part D claims than the average internal medicine physician in 2024

3,066 Medicare Part D claims for 270 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.

  1. Carlos Arguedas3,066
  2. Specialty average3,176

Most prescribed

  1. Levothyroxine Sodium165 claims
  2. Losartan Potassium161 claims
  3. Amlodipine Besylate144 claims
  4. Atorvastatin Calcium144 claims
  5. Omeprazole128 claims
  6. Metformin Hcl114 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.

Industry payments in 2024: $1,263.85

53 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. 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.

  1. Carlos Arguedas$1,263.85
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Carlos Arguedas among 17,696 internal medicine physician records in California

Carlos Arguedas 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
  • Graduated1986 · median 2004 among the 11,065 with a school on file
  • Record last updated2020 · 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).

40 internal medicine physician records list a practice address in Los Alamitos

They are 40 of the 1,035 NPPES records with a practice address in Los Alamitos, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Barry Allswang, MDLos Alamitos, CA 907201720016397
  2. Vichai Bhoopat, M.D.Los Alamitos, CA 907201841211497
  3. Winston Chung, MDLos Alamitos, CA 907201851322085
  4. Gerald Cohen, MDLos Alamitos, CA 907201306877253
  5. Heena Contractor, M.D.Los Alamitos, CA 907201518954973
  6. William Harrell, MDLos Alamitos, CA 907201083673685
  7. Taolin Jen, M.D.Rossmoor, CA 907201457384828
  8. Harold Lin, M.D.Los Alamitos, CA 907201467472472

Common questions

What is Carlos Arguedas's NPI number?

Carlos Arguedas's National Provider Identifier (NPI) is 1023075579, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Carlos Arguedas located?

The NPPES record lists a practice address at 5300 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 429-1200. Providers update this record themselves, so call before visiting.

How can I verify Carlos Arguedas's license?

NPPES lists California license number A45750, 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 Carlos Arguedas prescribe under Medicare Part D?

In 2024, Carlos Arguedas had 3,066 Medicare Part D claims for 270 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.