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Cardiovascular Disease (Cardiology)

Rene L. Desmarais, MD

Works at hospitals in Berlin, MD · Seaford, DE · Salisbury, MD · Maryland, Delaware

Summary

Dr. Rene L. Desmarais, MD is a cardiologist at 314 Franklin Ave, Suite 402, Berlin, MD 21811. Phone: (410) 641-2236. Accepts Medicare assignment. In 2024, Rene L. Desmarais had 1,957 Original Medicare patients and 9,758 services. NPI 1518942390. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Rene L. Desmarais, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Rene L. Desmarais accept Medicare assignment?
Yes. Medicare's clinician data says Rene L. Desmarais accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Rene L. Desmarais see?
In 2024, CMS data shows 1,957 Original Medicare patients and 9,758 services for Rene L. Desmarais. This counts Original Medicare only and measures volume, not quality.
What is Rene L. Desmarais's NPI number?
1518942390. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Rene L. Desmarais, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients1,957
Services billed to Medicare9,758
Different services or procedures43
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Injection, regadenoson, 0.1 mg (J2785)1,692 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,080 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)720 services
  4. Anticoagulant management of patient taking warfarin (93793)507 services
  5. Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (93015)489 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease56%
  • Arthritis50%
  • Diabetes37%
  • Chronic kidney disease36%

Hospitals where Rene L. Desmarais works

Medicare's Facility Affiliation Data lists Rene L. Desmarais at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Rene L. Desmarais is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Rene L. Desmarais as a member of this group (CMS data updated October 2, 2026).

  • Tidalhealth Specialty Care LLC398 clinicians in the group

Specialties

Find other Cardiovascular Disease (Cardiology) doctors in Maryland →

Other cardiologists in Berlin

Clinicians with the same Medicare primary specialty in Berlin, MD — not a recommendation.

All cardiologists in Berlin →

Other clinicians in Tidalhealth Specialty Care LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Connecticut School Of Medicine
Graduation year1987 (39 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1518942390
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians