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DR. MOHAMAD-ZAHI MUSTAPHA KASSAS MD
NPI 1629085592
Pediatrics in Wellsville, NY

Active since August 02, 2006PECOS EnrolledCLIA 33D1012655 · Waiver
313 N MAIN ST, WELLSVILLE, NY 14895(585) 596-4105(585) 596-4107 Get Directions Write a Review

NPPES record last updated: June 28, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Mohamad-zahi Mustapha Kassas Md NPPES

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

DR. MOHAMAD-ZAHI MUSTAPHA KASSAS MD (NPI 1629085592) is an individual pediatrics provider in Wellsville, New York, licensed in New York (236190) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and holds a CLIA Waiver certificate valid through May 18, 2027.

NPPES Registry Identity

NPI1629085592
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. MOHAMAD-ZAHI MUSTAPHA KASSASCredential: MD
Location Address313 N MAIN STWellsville, NY 14895-1016
Mailing Address313 N Main StWellsville, NY 14895-1016 · (585) 596-4105 · Fax (585) 596-4107
Phone(585) 596-4105
Fax(585) 596-4107
Sole ProprietorYes
Enumeration DateAugust 2, 2006
Last NPPES UpdateJune 28, 2023
✔ NPI 1629085592 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 236190
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
313 N MAIN ST, Wellsville, NY 14895
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mohamad-zahi Mustapha Kassas Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

3

Medicare enrollment records show Mohamad-zahi Kassas reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Jones Medical Services, PC
1.0 mi
Obstetrics & Gynecology
191 N MAIN ST
Wellsville, NY 14895
  • Reassigned Medicare billing, New York enrollment
  • 13 clinicians in this Medicare group
NPI 1376961532 (585) 593-1100
United Memorial Medical Center
63 mi
Hematology & Oncology
127 NORTH ST, SECOND FLOOR
Batavia, NY 14020
  • Reassigned Medicare billing, New York enrollment
  • 782 clinicians in this Medicare group
NPI 1508260704 (585) 344-5252
The Unity Hospital Of Rochester
73 mi
Clinical Medical Laboratory
160 ELMGROVE PARK
Rochester, NY 14624
  • Reassigned Medicare billing, New York enrollment
  • 1,442 clinicians in this Medicare group
NPI 1720471246 (585) 426-1234

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 33D1012655

Mohamad Zahi Kassas MD · Wellsville, NY
Active · expires May 18, 2027
CLIA Number33D1012655
Laboratory TypePhysician Office
Certificate Effective DateMay 19, 2025
Certificate Expiration DateMay 18, 2027
Laboratory DirectorMohamad Z. Kassas
Laboratory Phone(585) 596-4105
Laboratory LocationMohamad Zahi Kassas MD313 North Main Street, Wellsville, NY 14895
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14895 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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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 3

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

WILLIAM J WONDERLING P.A.
Physician Assistant
313 N MAIN ST
WELLSVILLE, NY 14895
Allegany County (585) 596-2053
DR. JAMES H EDMONSTON D.O.
Surgery
313 N MAIN ST
WELLSVILLE, NY 14895
Allegany County (585) 593-7911
MRS. MONICA JEANNE ACOMB 38382089
Nurse Practitioner (Pediatrics)
313 N MAIN ST
WELLSVILLE, NY 14895
Allegany County (585) 596-4115

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 Mohamad-zahi Kassas's NPI number?

The NPI number for Mohamad-zahi Kassas is 1629085592. It was assigned to this individual provider in the NPPES registry on August 2, 2006.

Where is Mohamad-zahi Kassas located?

Mohamad-zahi Kassas practices at 313 N Main St, Wellsville, NY 14895. The listed phone number is (585) 596-4105.

What is Mohamad-zahi Kassas's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mohamad-zahi Kassas enrolled in Medicare?

Yes. Mohamad-zahi Kassas is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mohamad-zahi Kassas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mohamad-zahi Kassas reassigns Medicare benefits to 3 organizations: Jones Medical Services, PC (Wellsville, NY), United Memorial Medical Center (Batavia, NY) and The Unity Hospital Of Rochester (Rochester, NY). 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 Mohamad-zahi Kassas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Mohamad-zahi Kassas hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D1012655) is associated with this NPI, valid through May 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Mohamad-zahi Kassas was last updated on June 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.