2026 NPPES data Family Medicine Physician NPI 1023178464 M.D.
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MICHAEL MARKOPOULOS, M.D.

Family Medicine Physician in DEL MAR, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
12K
Medicare Part D claims · 226 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MICHAEL MARKOPOULOS, M.D. filed 11,704 Medicare Part D claims in 2023 as a Family Medicine Physician in DEL MAR, California, prescribing 87% generic.

12K
Part D claims, 2023
87%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

MICHAEL MARKOPOULOS, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

11,704 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

MICHAEL MARKOPOULOS, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MICHAEL MARKOPOULOS, M.D.?

Quality data not reported

NPI registry status

Active

Issued 12/08/2006

NPI 1023178464

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

11,704 242% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in California

How Family Medicine Physician compares to other specialties among California providers

California providers

Family Medicine Physician share within California

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

MICHAEL MARKOPOULOS, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 2683 VIA DE LA VALLE, DEL MAR, CA, 92014, with a listed phone of (858) 481-0412. NPI 1023178464 was issued on 12/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARKOPOULOS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 11,704 prescription claims written by this provider, covering 226 Medicare beneficiaries and totaling roughly $746K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 0.2%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2683 VIA DE LA VALLE
DEL MAR, CA 92014

Provider Details

NPI 1023178464
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 12/08/2006

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to MICHAEL MARKOPOULOS, M.D.. To verify MICHAEL MARKOPOULOS, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

MICHAEL MARKOPOULOS, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 11,704 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

11,704
Total Claims
$746K
Total Drug Cost
226
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,178
Total Day Supply
324,723
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$367K
Generic Drug Cost
$370K
Opioid Claims
26 (0.2% rate)
Antibiotic Claims
185

Patient Demographics

Average Patient Age
58.1 years
Avg HCC Risk Score
1.40
Gender Split
48% female / 52% male
Age Distribution
<65: 154, 65-74: 55, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What MICHAEL MARKOPOULOS, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
1,041
Famotidine
384
Levetiracetam
345
Rosuvastatin Calcium
309
Omeprazole
290
Olanzapine
258
Simvastatin
255
Baclofen
240
Phenobarbital
232
Risperidone
230

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Family Medicine Physician Overview

How MICHAEL MARKOPOULOS, M.D. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

MICHAEL MARKOPOULOS, M.D.'s 11,704 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as MARKOPOULOS.

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL MARKOPOULOS, M.D.'s specialty?
MICHAEL MARKOPOULOS, M.D. specializes in Family Medicine Physician and practices in DEL MAR, California. Credentials: M.D..
How much does MICHAEL MARKOPOULOS, M.D. prescribe under Medicare Part D?
In 2023, MICHAEL MARKOPOULOS, M.D. wrote 11,704 Medicare Part D claims totaling $746K in drug costs for 226 beneficiaries.
Where is MICHAEL MARKOPOULOS, M.D. located?
MICHAEL MARKOPOULOS, M.D. is located at 2683 VIA DE LA VALLE, DEL MAR, CA, 92014. Phone: (858) 481-0412.
What is MICHAEL MARKOPOULOS, M.D.'s NPI number?
MICHAEL MARKOPOULOS, M.D.'s National Provider Identifier (NPI) is 1023178464, issued on 12/08/2006.
Does MICHAEL MARKOPOULOS, M.D. prescribe more brand-name or generic drugs?
MICHAEL MARKOPOULOS, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $367K in brand drug costs.
Does MICHAEL MARKOPOULOS, M.D. prescribe opioids?
Yes, MICHAEL MARKOPOULOS, M.D. had 26 opioid claims in 2023 with an opioid prescribing rate of 0.2%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does MICHAEL MARKOPOULOS, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL MARKOPOULOS, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Famotidine, Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL MARKOPOULOS, M.D. accept Medicare?
MICHAEL MARKOPOULOS, M.D. appears in CMS Medicare data with 11,704 Part D claims and 226 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL MARKOPOULOS, M.D.'s credentials?
MICHAEL MARKOPOULOS, M.D.'s NPI is 1023178464 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology