Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Maamoun A Harmouch, MD

Individual provider Surgery Physician · NPI 1497098552

Dr. Maamoun A Harmouch, MD is registered under Colorectal Surgery (Proctology) in Webster, Texas. Graduated from Northeastern Ohio University College of Medicine in 2013, 13 years ago. Practices with Cls Health PLLC, a 175-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Louisiana and Texas.

Years since qualifying
13
Trained at
Northeastern Ohio University College of Medicine
Licensed in
LA, TX
In the registry since
2013
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

600 N Kobayashi Ste 213
Webster, TX 77598-4841
Phone: (281) 332-3909
Fax: (281) 336-1616
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 4615 Southwest Fwy Ste 1000, Houston, TX 77027-7108 — (281) 332-3909
  • 600 N Kobayashi Ste 309, Webster, TX 77598-4841 — (281) 724-8332
  • 600 N Kobayashi Ste 110, Webster, TX 77598-4841 — (281) 338-1701
  • 500 N Kobayashi Ste C, Webster, TX 77598-4722 — (281) 816-3092

Specialties & licences

Colon & Rectal Surgery Physician (primary) Taxonomy 208C00000X · Licence R9495 (TX)
Surgery Physician Taxonomy 208600000X · Licence 307695 (LA)
Surgery Physician Taxonomy 208600000X · Licence R9495 (TX)

Record details

NPI number1497098552
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 27, 2013
Last updated in NPPESJanuary 20, 2026
Certification dateJanuary 20, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCOLORECTAL SURGERY (PROCTOLOGY)
Also practisesGENERAL SURGERY
Medical schoolNORTHEASTERN OHIO UNIVERSITY COLLEGE OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Cls Health Pllc — 175 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hernia repair (minimally invasive) 14 times · 80th percentile
Colonoscopy 22 times · 49th percentile
Upper gastrointestinal (GI) endoscopy for acid reflux 11 times · 42nd percentile
Melanoma (skin cancer) excision 1–10 times
Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients180
Services billed 1,292 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $551 14 payments · a meal or drink at a meeting or visit, not a fee
Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $500 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Cls Health PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 175 clinicians in the practice; 12 are shown here.

Other providers in Webster