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MR. WISSAM E. MATTAR MD
NPI 1831358092
Internal Medicine - Gastroenterology in Scottsdale, AZ

Active since June 03, 2008PECOS EnrolledAccepts Medicare Assignment
9201 E MOUNTAIN VIEW RD STE 105, SCOTTSDALE, AZ 85258(480) 587-6614(480) 882-5809 Get Directions Write a Review

NPPES record last updated: September 4, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Wissam E. Mattar Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. WISSAM E. MATTAR MD (NPI 1831358092) is an individual gastroenterology provider in Scottsdale, Arizona, licensed in Arizona (59625) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1831358092
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMR. WISSAM E. MATTARCredential: MD
Location Address9201 E MOUNTAIN VIEW RD STE 105Scottsdale, AZ 85258-5140
Mailing Address9201 E Mountain View Rd Ste 105Scottsdale, AZ 85258-5140 · (480) 587-6614
Phone(480) 587-6614
Fax(480) 882-5809
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateJune 3, 2008
Last NPPES UpdateSeptember 4, 2025
NPPES CertifiedSeptember 4, 2025
✔ NPI 1831358092 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in AZ · 59625
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
9201 E MOUNTAIN VIEW RD STE 105, Scottsdale, AZ 85258
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, AmeriHealth Caritas Next and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Wissam E. Mattar Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8527237577
PECOS Enrollment IDI20250811001746
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Wissam Mattar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Honorhealth Ambulatory
Same address
Gastroenterology
9201 E MOUNTAIN VIEW RD STE 105
Scottsdale, AZ 85258
  • Reassigned Medicare billing, Arizona enrollment
  • 822 clinicians in this Medicare group
NPI 1659995892 (480) 882-7490
Tidalhealth Specialty Care, LLC
2,047 mi
Medical Specialty
100 E CARROLL ST
Salisbury, MD 21801
  • Reassigned Medicare billing, Maryland enrollment
  • 531 clinicians in this Medicare group
NPI 1619504735 (410) 546-6400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85258 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$127.71 typical visit price
range $55.44 – $168.60
Typical copayment $31.92 (range $13.86 – $42.15)
Most-billed visit code 99204
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIANA M COTTON ACNP
Nurse Practitioner (Acute Care)
9201 E MOUNTAIN VIEW RD STE 105
SCOTTSDALE, AZ 85258
Maricopa County (480) 882-7490
HONORHEALTH AMBULATORY
Internal Medicine (Gastroenterology)
9201 E MOUNTAIN VIEW RD STE 105
SCOTTSDALE, AZ 85258
Maricopa County (480) 882-7490
NAVROOP KANWAL NAGRA M.D
Internal Medicine (Gastroenterology)
9201 E MOUNTAIN VIEW RD STE 105
SCOTTSDALE, AZ 85258
Maricopa County (480) 882-7490
DR. ANDREW NELS WALLACE D.O.
Internal Medicine (Infectious Disease)
9201 E MOUNTAIN VIEW RD STE 105
SCOTTSDALE, AZ 85258
Maricopa County (480) 587-6970

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Wissam Mattar's NPI number?

The NPI number for Wissam Mattar is 1831358092. It was assigned to this individual provider in the NPPES registry on June 3, 2008.

Where is Wissam Mattar located?

Wissam Mattar practices at 9201 E Mountain View Rd Ste 105, Scottsdale, AZ 85258. The listed phone number is (480) 587-6614.

What is Wissam Mattar's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Wissam Mattar enrolled in Medicare?

Yes. Wissam Mattar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Wissam Mattar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wissam Mattar reassigns Medicare benefits to 2 organizations: Honorhealth Ambulatory (Scottsdale, AZ) and Tidalhealth Specialty Care, LLC (Salisbury, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Wissam Mattar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Wissam Mattar accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, AmeriHealth Caritas Next, Blue Cross Blue Shield of Arizona and Cigna HealthCare of Arizona, Inc and 1 other insurer list Wissam Mattar as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Wissam Mattar was last updated on September 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.