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SOTHY L PHENG MD A PROFESSIONAL CORPORATION
NPI 1407495815
Internal Medicine in Fullerton, CA

Active since January 02, 2020
2961 OAKBERRY CT, FULLERTON, CA 92835(978) 551-8088 Get Directions Write a Review

NPPES record last updated: January 2, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Sothy L Pheng Md A Professional Corporation NPPES

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

SOTHY L PHENG MD A PROFESSIONAL CORPORATION (NPI 1407495815) is a healthcare organization registered as an internal medicine in Fullerton, California and active in the NPI registry since January 2020. The organization lists Sothy Lun Pheng, President, as its authorized official.

NPPES Registry Identity

NPI1407495815
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSOTHY L PHENG MD A PROFESSIONAL CORPORATION
Location Address2961 OAKBERRY CTFullerton, CA 92835-4304
Mailing AddressPo Box 3446Fullerton, CA 92834-3446
Phone(978) 551-8088
Organization SubpartNo
Authorized OfficialSothy Lun PhengPresident · (978) 551-8088
Enumeration DateJanuary 2, 2020
✔ NPI 1407495815 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
2961 OAKBERRY CT, Fullerton, CA 92835
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Other Identifiers 1

Medicaid2086948MA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Sothy L Pheng Md A Professional Corporation 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 Sothy L Pheng MD A Professional Corporation, which bills Medicare for the services this clinician delivers.

Clinician (1)

Sothy Pheng, MD
Internal Medicine
NPI 1083697007
2961 OAKBERRY CT
Fullerton, CA 92835
(978) 551-8088
✔ 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 Sothy L Pheng MD A Professional Corporation's NPI number?

The NPI number for Sothy L Pheng MD A Professional Corporation is 1407495815. It was assigned to this organization in the NPPES registry on January 2, 2020.

Where is Sothy L Pheng MD A Professional Corporation located?

Sothy L Pheng MD A Professional Corporation is located at 2961 Oakberry Ct, Fullerton, CA 92835. The listed phone number is (978) 551-8088.

What is Sothy L Pheng MD A Professional Corporation's specialty?

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

Is Sothy L Pheng MD A Professional Corporation enrolled in Medicare?

Yes. Sothy L Pheng MD A Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Sothy L Pheng MD A Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Sothy L Pheng MD A Professional Corporation. 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 Sothy L Pheng MD A Professional Corporation was last updated on January 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.