SHAWN YOUNESSI
NPI 1629503842
Internal Medicine in Tarzana, CA

Q: What is Shawn Younessi's NPI number?

The NPI number for Shawn Younessi is 1629503842. It was assigned to this individual provider in the NPPES registry on April 25, 2017.

Q: What is Shawn Younessi's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Shawn Younessi was last updated on March 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 April 25, 2017PECOS EnrolledAccepts Medicare Assignment

18840 VENTURA BLVD STE 207, TARZANA, CA 91356(818) 654-8111(818) 757-1311 Get Directions Write a Review

NPPES record last updated: March 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 10, 2025, Dec 10, 2020, Sep 15, 2020 and 1 more (4 updates tracked since 2017).

On this page

About Shawn Younessi NPPES

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

SHAWN YOUNESSI (NPI 1629503842) is an individual internal medicine provider in Tarzana, California, licensed in California (A159934) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).

NPPES Registry Identity

NPI1629503842

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameSHAWN YOUNESSI

Location Address18840 VENTURA BLVD STE 207Tarzana, CA 91356-3381

Mailing Address18840 Ventura Blvd Ste 207Tarzana, CA 91356-3381 · (818) 654-8111 · Fax (818) 757-1311

Phone(818) 654-8111

Fax(818) 757-1311

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateApril 25, 2017

Last NPPES UpdateMarch 10, 20254 updates tracked since enumeration

NPPES CertifiedMarch 10, 2025

✔ NPI 1629503842 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A159934

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

18840 VENTURA BLVD STE 207, Tarzana, CA 91356

Open in Google Maps ↗

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

Shawn Younessi 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 ID7113337304

PECOS Enrollment IDI20250210003499

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 Reassignment

Medicare enrollment records show Shawn Younessi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Jeremy Schwieger, M.D., A Medical Corporation

Same address

Internal Medicine

18840 VENTURA BLVD STE 207
Tarzana, CA 91356

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Jeremy Schwieger MD A Medical Corporation
2 clinicians in this Medicare group

NPI 1497323646 (818) 654-8111

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 91356 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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 8

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

JEREMY SCHWIEGER M.D.

Internal Medicine (Nephrology)