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GREGORY SAMUEL YUNG DO
NPI 1568111466
Internal Medicine in Long Beach, CA

Active since March 20, 2022PECOS EnrolledAccepts Medicare Assignment
1045 ATLANTIC AVE STE 708, LONG BEACH, CA 90813(562) 491-9140(562) 491-9146 Get Directions Write a Review

NPPES record last updated: June 25, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 25, 2025, Oct 3, 2023, Jan 24, 2023 (3 updates tracked since 2023).

About Gregory Samuel Yung Do NPPES

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

GREGORY SAMUEL YUNG DO (NPI 1568111466) is an individual internal medicine provider in Long Beach, California, licensed in California (20A22130) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS and is a graduate of Arizona College Of Osteopathic Medicine Mid Western University (2022).

NPPES Registry Identity

NPI1568111466
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGREGORY SAMUEL YUNGCredential: DO
Location Address1045 ATLANTIC AVE STE 708Long Beach, CA 90813-3410
Mailing Address1050 Linden AveLong Beach, CA 90813-3321 · (562) 491-9140 · Fax (562) 491-9146
Phone(562) 491-9140
Fax(562) 491-9146
Sole ProprietorNo
Medical School CMSArizona College Of Osteopathic Medicine Mid Western UniversityGraduated 2022
Enumeration DateMarch 20, 2022
Last NPPES UpdateJune 25, 20253 updates tracked since enumeration
NPPES CertifiedJune 25, 2025
✔ NPI 1568111466 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 20A22130
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1045 ATLANTIC AVE STE 708, Long Beach, CA 90813
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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

Gregory Samuel Yung Do 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 ID547790370
PECOS Enrollment IDI20260514001300
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 Gregory Yung reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Dignity Health
Same address
Community Health
1045 ATLANTIC AVE, SUITE 708
Long Beach, CA 90813
  • Reassigned Medicare billing, California enrollment
  • 28 clinicians in this Medicare group
NPI 1962527390 (562) 491-9045

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 90813 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.

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 Gregory Yung's NPI number?

The NPI number for Gregory Yung is 1568111466. It was assigned to this individual provider in the NPPES registry on March 20, 2022.

Where is Gregory Yung located?

Gregory Yung practices at 1045 Atlantic Ave Ste 708, Long Beach, CA 90813. The listed phone number is (562) 491-9140.

What is Gregory Yung's specialty?

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

Is Gregory Yung enrolled in Medicare?

Yes. Gregory Yung 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 organization bills Medicare for Gregory Yung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Yung reassigns Medicare benefits to Dignity Health (Long Beach, CA). The 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 Gregory Yung'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 Gregory Yung was last updated on June 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.