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DR. MARK MAGDY YOUSSEF MD
NPI 1225200637
Surgery in Santa Monica, CA

Active since March 25, 2008PECOS EnrolledAccepts Medicare Assignment
1551 OCEAN AVE, STE.#200, SANTA MONICA, CA 90401(310) 434-0044(310) 434-0099 Get Directions Write a Review

NPPES record last updated: November 10, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 10, 2020, Oct 19, 2020, Sep 28, 2015 (3 updates tracked since 2015).

About Dr. Mark Magdy Youssef Md NPPES

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

DR. MARK MAGDY YOUSSEF MD (NPI 1225200637) is an individual surgery provider in Santa Monica, California, licensed in California (A77473) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Santa Monica, and is a graduate of University Of California, Irvine, California College Of Medicine (2000).

NPPES Registry Identity

NPI1225200637
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameDR. MARK MAGDY YOUSSEFCredential: MD
Location Address1551 OCEAN AVE, STE.#200Santa Monica, CA 90401-2108
Mailing AddressPo Box 7001Tarzana, CA 91357-7001 · (818) 888-7815 · Fax (818) 715-1722
Phone(310) 434-0044
Fax(310) 434-0099
Sole ProprietorYes
Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2000
Enumeration DateMarch 25, 2008
Last NPPES UpdateNovember 10, 20203 updates tracked since enumeration
NPPES CertifiedNovember 10, 2020
✔ NPI 1225200637 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in CA · A77473
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 ListedObstetrics & GynecologyTaxonomy 207V00000X · License A77473 (CA)
Also ListedPlastic SurgeryTaxonomy 208200000X · License A77473 (CA)
1551 OCEAN AVE, Santa Monica, CA 90401
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Secondary Practice Location 1

Location 11317 5th St Ste 300Santa Monica, CA 90401-1433 · Phone (818) 888-7815 · Fax (818) 715-1722

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

Dr. Mark Magdy Youssef 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 ID5092775296
PECOS Enrollment IDI20041012001459
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 Mark Youssef reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mark Youssef A Medical Corporation
0.4 mi
Plastic Surgery
1317 5TH ST STE 300
Santa Monica, CA 90401
  • Reassigned Medicare billing, California enrollment
  • 3 clinicians in this Medicare group
NPI 1659698181 (310) 434-0044
Younique Medical Group
0.4 mi
General Practice
1317 5TH ST STE 300
Santa Monica, CA 90401
  • Reassigned Medicare billing, California enrollment
NPI 1942915822 (310) 434-0044

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90401 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
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 6

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

GHOZLAND AND YOUSSEF A MEDICAL CORP
Obstetrics & Gynecology
1551 OCEAN AVE, STE. 200
SANTA MONICA, CA 90401
Los Angeles County (310) 434-0044
MICHELE YACSO
Physician Assistant (Medical)
1551 OCEAN AVE, STE. #200
SANTA MONICA, CA 90401
Los Angeles County (310) 434-0044
ROSHEN G GANESH, DDS, PDD, INC
Dentist (General Practice)
1551 OCEAN AVE, SUITE 260
SANTA MONICA, CA 90401
Los Angeles County (310) 458-4000
GHOZLAND AND YOUSSEF ANESTHESIA MEDICAL GROUP INC
Anesthesiology
1551 OCEAN AVE, SUITE 200
SANTA MONICA, CA 90401
Los Angeles County (310) 434-0044
RONALD ALEXANDER PHD
Psychologist (Family)
1551 OCEAN AVE, STE #230
SANTA MONICA, CA 90401
Los Angeles County (310) 395-2243
MR. CARL FREDERICK KUGEL M.A., M.F.T.
Marriage & Family Therapist
1551 OCEAN AVE, #230
SANTA MONICA, CA 90401
Los Angeles County (310) 459-1782

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 Mark Youssef's NPI number?

The NPI number for Mark Youssef is 1225200637. It was assigned to this individual provider in the NPPES registry on March 25, 2008.

Where is Mark Youssef located?

Mark Youssef practices at 1551 Ocean Ave Ste.#200, Santa Monica, CA 90401. The listed phone number is (310) 434-0044.

What is Mark Youssef's specialty?

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

Is Mark Youssef enrolled in Medicare?

Yes. Mark 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.

Which organizations bill Medicare for Mark Youssef's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Youssef reassigns Medicare benefits to 2 organizations: Mark Youssef A Medical Corporation (Santa Monica, CA) and Younique Medical Group (Santa Monica, CA). 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 Mark Youssef's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Youssef was last updated on November 10, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.