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About Dr. Idriss El Koussaimi
Background and practice information
Dr. Idriss El Koussaimi is an internal medicine physician with over 24 years of clinical experience serving patients in the Holliston, MA area. He completed his medical training at Other and has been in practice since 2002. He currently practices at Charles River Medical Associates, Pc.
Dr. Idriss El Koussaimi's clinical practice focuses on treating patients with high cholesterol, high blood pressure, acid reflux and stomach ulcers, and related conditions.
Dr. Idriss El Koussaimi is in-network with 10 insurance providers, including Aetna, BCBS Massachusetts, BCBS Massachusetts HMO, and 7 more. Patients are encouraged to verify coverage with his office before scheduling an appointment.
At a Glance
Education
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Claim this profilePractice Locations
1 location
Charles River Medical Associates, Pc
Primary479 Washington St
Holliston, MA 01746
(508) 429-2377
Affiliations
Hospital and facility affiliations
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Treatment & Experience
Clinical practice and procedure experience for Dr. Idriss El Koussaimi
Services & Procedures
Dr. Idriss El Koussaimi's clinical practice encompasses office visits, preventive care, diagnostic testing, and 2 other areas of care. Based on Medicare utilization data, Dr. Idriss El Koussaimi has provided a substantial volume of services, reflecting an active and established practice in internal medicine.
Office Visits
947 servicesDr. Idriss El Koussaimi provides patient consultations ranging from routine follow-ups to comprehensive evaluations, including follow-up visit and phone consultation and new patient visit. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 77% below the billed amount.
Preventive Care
538 servicesDr. Idriss El Koussaimi delivers preventive health services including wellness visits, vaccinations, and health screenings, including annual wellness visit, pneumonia vaccine, and other related services. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 43% below the billed amount.
Diagnostic Testing
788 servicesDr. Idriss El Koussaimi orders and interprets diagnostic tests to support clinical decision-making, including blood draw and urinalysis and EKG. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 81% below the billed amount.
Surgical Procedures
14 servicesDr. Idriss El Koussaimi performs surgical procedures, with removal of impacted ear wax being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 72% below the billed amount.
Home & Residential Care
30 servicesDr. Idriss El Koussaimi provides medical care in patients' homes and residential settings, with home health recertification being a key part of his practice. Medicare patients typically pay significantly less than the standard charge for these services, with Medicare-approved rates averaging 74% below the billed amount.
Treatment Approach
Dr. Idriss El Koussaimi's treatment approach includes prescribing Atorvastatin Calcium, Lisinopril, Amlodipine Besylate for his patients. These medications are commonly used for treating high cholesterol, high blood pressure. He prescribing profile reflects experience across a wide range of treatments, addressing multiple aspects of patient care within his specialty. Dr. Idriss El Koussaimi has treated a significant number of Medicare patients, demonstrating an established practice in this area.
Source: CMS Medicare Provider Utilization and Payment Data, 2023.
Insurance Networks
Accepted insurance plans and networks
Dr. Idriss El Koussaimi accepts 51 plans from 10 insurers, including Cigna, UnitedHealthcare, Humana.
Source: CMS Transparency in Coverage filings (March 2026). Network participation may change — verify with the provider's office before scheduling.
Patient Reviews
Reviews and ratings from patients
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About Internal Medicine
Specialty overview and common conditions
An internal medicine physician (internist) is a medical doctor who specializes in the prevention, diagnosis, and treatment of diseases in adults. Internists are trained to manage complex, chronic, and multi-system illnesses, often serving as primary care doctors for adults or as consultants to other...
Common conditions treated by internal medicine specialists:
- Type 2 Diabetes Mellitus
- Hypertension (High Blood Pressure)
- Hyperlipidemia (High Cholesterol)
- Coronary Artery Disease (Heart Disease)
Frequently Asked Questions
Common questions about Idriss El Koussaimi
Does Dr. El Koussaimi accept Medicare?
Yes, Dr. El Koussaimi accepts Medicare assignment. Patients with Medicare coverage can see Dr. El Koussaimi and typically pay less out of pocket when using a provider who accepts Medicare assignment.
What insurance does Dr. El Koussaimi accept?
Dr. El Koussaimi is in-network with 10 insurance providers, including Aetna, BCBS Massachusetts, BCBS Massachusetts HMO, Cigna, Humana, and 5 more. Insurance networks can change, so patients should verify their specific plan coverage directly with Dr. El Koussaimi's office before scheduling.
Does Dr. El Koussaimi offer telehealth or virtual appointments?
Yes, Dr. El Koussaimi offers telehealth services, allowing patients to have virtual consultations from the comfort of their home. Contact the office to schedule a telehealth appointment.
What conditions does Dr. El Koussaimi treat?
As a internal medicine specialist, Dr. El Koussaimi commonly treats conditions including type 2 diabetes mellitus, hypertension (high blood pressure), hyperlipidemia (high cholesterol), coronary artery disease (heart disease), chronic obstructive pulmonary disease (copd), and other related health concerns. Contact the office to discuss your specific healthcare needs.
What medications does Dr. El Koussaimi commonly prescribe?
Based on Medicare prescribing data, Dr. El Koussaimi commonly prescribes medications including Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. The specific medications prescribed depend on each patient's individual diagnosis and health needs. Patients should discuss treatment options directly with Dr. El Koussaimi during their consultation.
Where did Dr. El Koussaimi go to medical school?
Dr. El Koussaimi completed medical training at Other and has been practicing since 2002, bringing over 24 years of clinical experience.
Where is Dr. El Koussaimi's office located?
Dr. El Koussaimi practices at 479 WASHINGTON ST, Holliston, MA 01746 at CHARLES RIVER MEDICAL ASSOCIATES, PC. You can reach the office by calling (508) 429-2377.
How do I make an appointment with Dr. El Koussaimi?
To schedule an appointment with Dr. El Koussaimi, call the office at (508) 429-2377. New patients should have their insurance information and medical records ready when calling.
Data source: CMS National Provider Registry ·
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Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice. Learn more about our editorial standards