Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ZAID ALKAISSY MD
NPI 1285290445
Internal Medicine - Gastroenterology in Mesa, AZ

Active since May 14, 2019PECOS Enrolled
6020 E ARBOR AVE STE 101, MESA, AZ 85206(480) 985-1700(480) 396-3659 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 23, 2026, Jan 15, 2026, Jun 10, 2025 and 1 more (4 updates tracked since 2019).

About Zaid Alkaissy Md NPPES

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

ZAID ALKAISSY MD (NPI 1285290445) is an individual gastroenterology provider in Mesa, Arizona, licensed in Arizona (73667) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Winchester Medical Center, and maintains a secondary practice location in Winchester.

NPPES Registry Identity

NPI1285290445
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameZAID ALKAISSYCredential: MD
Location Address6020 E ARBOR AVE STE 101Mesa, AZ 85206-6102
Mailing Address3260 N Hayden Rd Ste 112Scottsdale, AZ 85251-6650 · (602) 264-9100 · Fax (602) 264-9101
Fax(480) 396-3659
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMay 14, 2019
Last NPPES UpdateJuly 23, 20264 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
NPI 1285290445 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in AZ · 73667
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 73667 (AZ)
6020 E ARBOR AVE STE 101, Mesa, AZ 85206

Secondary Practice Location 1

Location 1190 Campus Blvd Ste 300Winchester, VA 22601-2872 · Phone (540) 667-1244

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Zaid Alkaissy 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 ID6103153770
PECOS Enrollment IDI20260128003540
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.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Winchester Medical Center

Acute Care Hospitals · Winchester, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490005
Location1840 Amherst StWinchester, VA 22601 · Winchester City County
Emergency services Birthing friendly

Valley Health War Memorial Hospital

Critical Access Hospitals · Berkeley Springs, WV
OwnershipVoluntary non-profit - Private
CMS Certification Number511309
Location1 Healthy WayBerkeley Springs, WV 25411 · Morgan County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85206 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 5

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

Nurse Practitioner (Acute Care)
6020 E ARBOR AVE STE 101
MESA, AZ 85206
Internal Medicine (Gastroenterology)
6020 E ARBOR AVE STE 101
MESA, AZ 85206
Nurse Practitioner (Family)
6020 E ARBOR AVE STE 101
MESA, AZ 85206
Nurse Practitioner (Family)
6020 E ARBOR AVE STE 101
MESA, AZ 85206
Internal Medicine (Gastroenterology)
6020 E ARBOR AVE STE 101
MESA, AZ 85206

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 Zaid Alkaissy's NPI number?

The NPI number for Zaid Alkaissy is 1285290445. It was assigned to this individual provider in the NPPES registry on May 14, 2019.

Where is Zaid Alkaissy located?

Zaid Alkaissy practices at 6020 E Arbor Ave Ste 101, Mesa, AZ 85206. The listed phone number is (480) 985-1700.

What is Zaid Alkaissy's specialty?

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

Is Zaid Alkaissy enrolled in Medicare?

Yes. Zaid Alkaissy 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.

Is Zaid Alkaissy affiliated with any hospitals?

According to CMS data, Zaid Alkaissy is affiliated with Winchester Medical Center and Valley Health War Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Zaid Alkaissy was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days 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.