WONSOCK SHIN MD LLC
NPI 1972599249
Internal Medicine in Vienna, VA

Q: What is Wonsock Shin MD LLC's NPI number?

The NPI number for Wonsock Shin MD LLC is 1972599249. It was assigned to this organization in the NPPES registry on September 22, 2005. The provider was formerly known as C H Oh MD, LLC.

Q: What is Wonsock Shin MD LLC's specialty?

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

Active since September 22, 2005

410 PINE ST SE, SUITE 200, VIENNA, VA 22180(703) 865-8615(301) 777-7455 Get Directions Write a Review

NPPES record last updated: November 14, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

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About Wonsock Shin Md Llc NPPES

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

WONSOCK SHIN MD LLC (NPI 1972599249), doing business as C H Oh Md, Llc, is a healthcare organization registered as an internal medicine in Vienna, Virginia and active in the NPI registry since September 2005. The organization lists Wonsock Shin, Medical Director, as its authorized official.

NPPES Registry Identity

NPI1972599249

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameWONSOCK SHIN MD LLC

Location Address410 PINE ST SE, SUITE 200Vienna, VA 22180-4861

Mailing Address410 Pine St Se, Suite 200Vienna, VA 22180-4861 · (703) 865-8615 · Fax (301) 777-7455

Phone(703) 865-8615

Fax(301) 777-7455

Organization SubpartNo

Authorized OfficialWonsock ShinMedical Director · (703) 865-8615

Enumeration DateSeptember 22, 2005

Last NPPES UpdateNovember 14, 2025

NPPES CertifiedNovember 14, 2025

✔ NPI 1972599249 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

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.

Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X

410 PINE ST SE, Vienna, VA 22180

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Other Names 1

Former Legal Business NameC H Oh Md, Llc

Other Identifiers 4

Other891935Mamsi Id

Medicaid363200800MD

OtherLP49CHMD · Bc/bs Of Md

Other9795404002Cigna Id

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Wonsock Shin Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Wonsock Shin MD LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Wonsock Shin, M.D.

Internal Medicine

NPI 1821098203

410 PINE ST SE SUITE 200
Vienna, VA 22180

(703) 865-8615

✔ PECOS✔ Accepts MedicareSame address

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

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 Wonsock Shin MD LLC's NPI number?

The NPI number for Wonsock Shin MD LLC is 1972599249. It was assigned to this organization in the NPPES registry on September 22, 2005. The provider was formerly known as C H Oh MD, LLC.

Where is Wonsock Shin MD LLC located?

Wonsock Shin MD LLC is located at 410 Pine St SE Suite 200, Vienna, VA 22180. The listed phone number is (703) 865-8615.

What is Wonsock Shin MD LLC's specialty?

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

Is Wonsock Shin MD LLC enrolled in Medicare?

Yes. Wonsock Shin MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Wonsock Shin MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Wonsock Shin MD LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Wonsock Shin MD LLC was last updated on November 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.