Idriss El Koussaimi, M.D.
Internal Medicine Physician · Ashland, MA
Idriss El Koussaimi, M.D. is an internal medicine physician with a practice address in Ashland, Massachusetts, and NPI 1164695029, issued on Apr 10, 2008. Check the license (Massachusetts 247126, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Idriss El Koussaimi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 247126 MA
Self-reported in NPPES; status is on the state search - Practice location
- 171 Main St, Ashland, MA 01721
- Phone
- (508) 881-3029
- Enumerated
- Apr 10, 2008
- Record last updated
- May 25, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (508) 881-1752
- Medicare enrollment
- Enrolled (PECOS I20110929000327); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 171 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Idriss El Koussaimi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 247126Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,472 Medicare Part D claims for 543 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 207 claims were for opioids.
Most prescribed
- Atorvastatin Calcium533 claims
- Lisinopril322 claims
- Losartan Potassium305 claims
- Amlodipine Besylate293 claims
- Hydrochlorothiazide270 claims
- Omeprazole262 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.
Bills Medicare through one group practice
- Charles River Medical Associates, PCHolliston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Idriss El Koussaimi among 6,825 internal medicine physician records in Massachusetts
Idriss El Koussaimi, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2002 · median 2004 among the 4,103 with a school on file
- Record last updated2016 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Ashland
They are 2 of the 167 NPPES records with a practice address in Ashland, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Ashland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Pramodhya Chirasevinupraphand, MDAshland, MA 017211932197266
- Christine Brown, M.D.Acton, MA 017201588861660
- Amy Churchill, MDActon, MA 017201033171749
- Natalie Cohen, MDActon, MA 017201700179678
- Peter Demartino, M.D.Acton, MA 017201043292360
- Meenakshi GargActon, MA 017201497992192
- Allessandro Girolamo, M.D.Acton, MA 017201689636300
- Ingrid Gorman, M.D.Acton, MA 017201053302158
Common questions
What is Idriss El Koussaimi, M.D.'s NPI number?
Idriss El Koussaimi, M.D.'s National Provider Identifier (NPI) is 1164695029, issued on Apr 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Idriss El Koussaimi, M.D. located?
The NPPES record lists a practice address at 171 Main St, Ashland, MA, 01721. Phone: (508) 881-3029. Providers update this record themselves, so call before visiting.
How can I verify Idriss El Koussaimi, M.D.'s license?
NPPES lists Massachusetts license number 247126, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Idriss El Koussaimi, M.D. prescribe under Medicare Part D?
In 2024, Idriss El Koussaimi, M.D. had 7,472 Medicare Part D claims for 543 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.