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ASSER M YOUSSEF M.D.
NPI 1831297126
Surgery in Mesa, AZ

Active since September 20, 2006PECOS EnrolledAccepts Medicare Assignment
4135 S POWER RD STE 117, MESA, AZ 85212(480) 350-7905 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 13, 2022, Oct 4, 2020 (2 updates tracked since 2020).

About Asser M Youssef M.d. NPPES

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

ASSER M YOUSSEF M.D. (NPI 1831297126) is an individual surgery provider in Mesa, Arizona, licensed in Arizona (48584) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1992).

NPPES Registry Identity

NPI1831297126
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameASSER M YOUSSEFCredential: M.D.
Location Address4135 S POWER RD STE 117Mesa, AZ 85212-3625
Mailing AddressPo Box 1479Chandler, AZ 85244-1479 · (917) 572-1129 · Fax (480) 625-4302
Phone(480) 350-7905
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateSeptember 20, 2006
Last NPPES UpdateJune 11, 20262 updates tracked since enumeration
NPPES CertifiedJune 11, 2026
✔ NPI 1831297126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in AZ · 48584
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License 48584 (AZ)
4135 S POWER RD STE 117, Mesa, AZ 85212
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Other Identifiers 1

Medicaid890347AZ

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, Imperial Insurance Companies, Inc..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

Asser M Youssef M.d. 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 ID3173522729
PECOS Enrollment IDI20140502001900
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 7

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
60 services25 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
56 services55 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
51 services21 patients
Removal of gallbladder with x-ray study of bile ducts using an endoscope 47563
This procedure, known as an endoscopic retrograde cholangiopancreatography (ERCP), involves using a flexible camera (endoscope) to examine your bile ducts. If gallstones are found, your gallbladder may be removed in a separate procedure. This helps prevent future complications.
23 services23 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
21 services15 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
20 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85212 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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$69.24 typical visit price
range $17.72 – $137.41
Typical copayment $17.31 (range $4.43 – $34.35)
Most-billed visit code 99213
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.

DR. BRIAN SOONGYONG JU M.D.
Surgery
4135 S POWER RD STE 117
MESA, AZ 85212
Maricopa County (480) 892-2456
GENERAL & ROBOTIC SURGICAL ASSOCIATES PLLC
Surgery
4135 S POWER RD STE 117
MESA, AZ 85212
Maricopa County (480) 350-7905
COPPER MOUNTAIN SURGICAL PLLC
Surgery
4135 S POWER RD STE 117
MESA, AZ 85212
Maricopa County (480) 495-9399

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 Asser Youssef's NPI number?

The NPI number for Asser Youssef is 1831297126. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Asser Youssef located?

Asser Youssef practices at 4135 S Power Rd Ste 117, Mesa, AZ 85212. The listed phone number is (480) 350-7905.

What is Asser Youssef's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Asser Youssef enrolled in Medicare?

Yes. Asser Youssef 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 Asser Youssef accept?

Health plans from Ambetter from Arizona Complete Health, Blue Cross Blue Shield of Arizona and Imperial Insurance Companies, Inc. list Asser Youssef 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 Asser Youssef was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.