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Dr. Bassel Al-lahham, MD

Gastroenterology (Gastroenterology Physician)

19636 N 27th Ave Ste 408
Phoenix, AZ 85027

Who else practices at this address →

Maricopa County includes primary care (13% of residents) and dental (0% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (602) 780-0100

  • Medicare participating

At a glance

Years since graduation
27
In the NPI registry since
2006
Medicare patients seen, 2024
365

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Gastroenterology Physician primary
    AZ license 54197

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Gastroenterology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
365
Services billed
696
Patients’ average age
73
Most frequent Medicare services, 2023
ServiceTimesPatients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope9894
New patient office or other outpatient visit, 45-59 minutes8484
Established patient office or other outpatient visit, 30-39 minutes8474
Biopsy of large bowel using a flexible endoscope8080
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes7977
Removal of polyps or growths of large bowel using an endoscope with mechanical snare7474
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes4532
Dilation of esophagus3836
New patient office or other outpatient visit, 30-44 minutes1212

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 1 companies reported 1 payments worth $97.69 in total to this clinician.

By type
Food and Beverage$97.69

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Arizona →

Other Gastroenterology clinicians in Phoenix

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 11, 2019), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1619081577. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.