NADIM T ZYADEH MD
NPI 1609877935
Internal Medicine - Gastroenterology in Phoenix, AZ

Q: What is Nadim Zyadeh's NPI number?

The NPI number for Nadim Zyadeh is 1609877935. It was assigned to this individual provider in the NPPES registry on August 9, 2005.

Q: What is Nadim Zyadeh's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Nadim Zyadeh was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since August 09, 2005PECOS EnrolledAccepts Medicare Assignment

5815 N BLACK CANYON HWY STE 101, PHOENIX, AZ 85015(602) 973-6666(602) 812-3395 Get Directions Write a Review

NPPES record last updated: January 22, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 22, 2026, Jul 28, 2023, Dec 8, 2021 (3 updates tracked since 2021).

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About Nadim T Zyadeh Md NPPES

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

NADIM T ZYADEH MD (NPI 1609877935) is an individual gastroenterology provider in Phoenix, Arizona, licensed in Arizona (30881) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Round Rock Medical Center, and is a graduate of Other (1996).

NPPES Registry Identity

NPI1609877935

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameNADIM T ZYADEHCredential: MD

Location Address5815 N BLACK CANYON HWY STE 101Phoenix, AZ 85015-2200

Mailing Address5815 N Black Canyon Hwy Ste 101Phoenix, AZ 85015-2200 · (602) 973-6666 · Fax (602) 812-3395

Phone(602) 973-6666

Fax(602) 812-3395

Sole ProprietorNo

Medical School CMSOtherGraduated 1996

Enumeration DateAugust 9, 2005

Last NPPES UpdateJanuary 22, 20263 updates tracked since enumeration

NPPES CertifiedJanuary 22, 2026

✔ NPI 1609877935 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 · 30881

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.

5815 N BLACK CANYON HWY STE 101, Phoenix, AZ 85015

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Other Identifiers 3

OtherA7998438AZ · Aetna

OtherAZ0734070AZ · Blue Cross Blue Shield

Medicaid776304AZ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona.Insurance ›

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

Nadim T Zyadeh 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 ID7911092960

PECOS Enrollment IDI20071004000868

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.

Areas of Expertise CMS Part B claims 5

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

40 services28 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

22 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

21 services21 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

15 services15 patients

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.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Round Rock Medical Center

Acute Care Hospitals · Round Rock, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450718

Location2400 Round Rock AveRound Rock, TX 78681 · Williamson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85015 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

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

ADULT GASTROENTEROLOGY, P.L.L.C.

Internal Medicine (Gastroenterology)

5815 N BLACK CANYON HWY STE 101
PHOENIX, AZ 85015

Maricopa County (602) 973-6666

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 Nadim Zyadeh's NPI number?

The NPI number for Nadim Zyadeh is 1609877935. It was assigned to this individual provider in the NPPES registry on August 9, 2005.

Where is Nadim Zyadeh located?

Nadim Zyadeh practices at 5815 N Black Canyon Hwy Ste 101, Phoenix, AZ 85015. The listed phone number is (602) 973-6666.

What is Nadim Zyadeh's specialty?

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

Is Nadim Zyadeh enrolled in Medicare?

Yes. Nadim Zyadeh 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.

What insurance does Nadim Zyadeh accept?

Health plans from Ambetter from Arizona Complete Health and Blue Cross Blue Shield of Arizona list Nadim Zyadeh 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.

Is Nadim Zyadeh affiliated with any hospitals?

According to CMS data, Nadim Zyadeh is affiliated with Round Rock Medical Center.

When was this NPI record last updated?

The NPPES record for Nadim Zyadeh was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.