NPPES file of Aug 9, 2026

Michael Nicolas Markopoulos, M.D.

Family Medicine Physician · Del Mar, CA

Michael Nicolas Markopoulos, M.D. is a family medicine physician with a practice address in Del Mar, California, and NPI 1023178464, issued on Dec 8, 2006. Check the license (California G346870, 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
1023178464
Name
Michael Nicolas Markopoulos
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G346870 CA
Self-reported in NPPES; status is on the state search
Practice location
2683 Via DE LA Valle, Del Mar, CA 92014
Phone
(858) 481-0412
Enumerated
Dec 8, 2006
Record last updated
May 7, 2025
Fax
(858) 481-6066
Medicaid ID
00G346870 CA
Medicare enrollment
Enrolled (PECOS I20081230000047); accepts Medicare assignment
Medical or professional school
Rutgers New Jersey Medical School, 1976
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 2683 Via DE LA Valle

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

  1. Valerie Youngblood, MDInternal Medicine Physician1538397815

Verify Michael Nicolas Markopoulos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G346870
    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

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3.1 times the Medicare Part D claims of the average family medicine physician in 2024

10,824 Medicare Part D claims for 205 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 32 claims were for opioids.

  1. Michael Markopoulos10,824
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium934 claims
  2. Famotidine380 claims
  3. Rosuvastatin Calcium345 claims
  4. Levetiracetam326 claims
  5. Olanzapine266 claims
  6. Simvastatin223 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.

Michael Nicolas Markopoulos among 17,133 family medicine physician records in California

Michael Nicolas Markopoulos, 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
  • Graduated1976 · median 2005 among the 10,652 with a school on file
  • Record last updated2025 · 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).

7 family medicine physician records list a practice address in Del Mar

They are 7 of the 344 NPPES records with a practice address in Del Mar, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. James Boyd, MDDel Mar, CA 920141811906654
  2. Arnold Kremer, D.O.Del Mar, CA 920141104846344
  3. Robert Mendes, M.D.Del Mar, CA 920141912235292
  4. Ellenbeth Rodarte, M.D.Del Mar, CA 920141205808714
  5. Catherine Sundsmo, MDDel Mar, CA 920141861747545
  6. Jennifer Tran, D.O.Del Mar, CA 920141689794711
  7. Alisa Hideg, M.D.Carlsbad, CA 920111245365444
  8. Tommy Le, D.O.Carlsbad, CA 920111821090788

Common questions

What is Michael Nicolas Markopoulos, M.D.'s NPI number?

Michael Nicolas Markopoulos, M.D.'s National Provider Identifier (NPI) is 1023178464, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Nicolas Markopoulos, M.D. located?

The NPPES record lists a practice address at 2683 Via DE LA Valle, Del Mar, CA, 92014. Phone: (858) 481-0412. Providers update this record themselves, so call before visiting.

How can I verify Michael Nicolas Markopoulos, M.D.'s license?

NPPES lists California license number G346870, 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 Michael Nicolas Markopoulos, M.D. prescribe under Medicare Part D?

In 2024, Michael Nicolas Markopoulos, M.D. had 10,824 Medicare Part D claims for 205 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.