Gregory Samuel Yung, DO
Internal Medicine Physician · Long Beach, CA
Gregory Samuel Yung, DO is an internal medicine physician with a practice address in Long Beach, California, and NPI 1568111466, issued on Mar 20, 2022. Check the license (California 20A22130, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Samuel Yung
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A22130 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1045 Atlantic Ave Ste 708, Long Beach, CA 90813
- Phone
- (562) 491-9140
- Enumerated
- Mar 20, 2022
- Record last updated
- Jun 25, 2025
- Fax
- (562) 491-9146
- Medicare enrollment
- Enrolled (PECOS I20260514001300); may accept Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Gregory Samuel Yung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A22130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
392 Medicare Part D claims for 64 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium46 claims
- Amlodipine Besylate18 claims
- Lisinopril17 claims
- Omeprazole17 claims
- Furosemide15 claims
- Pantoprazole Sodium13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gregory Samuel Yung among 17,696 internal medicine physician records in California
Gregory Samuel Yung, DO is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 95% of them.
- NPI issued2022 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
221 internal medicine physician records list a practice address in Long Beach
They are 221 of the 13,650 NPPES records with a practice address in Long Beach, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Long Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Katya Corado, M.D.Long Beach, CA 908131013109461
- Jasminka CrileyLong Beach, CA 908131174535017
- Peter Ferrera, M.D.Long Beach, CA 908131366481384
- Brian Hugh, D.O.Long Beach, CA 908131811013857
- John Kassabian, M.D.Long Beach, CA 908131932207768
- Tom Ky, M.D.Long Beach, CA 908131558397869
- Thomas McCloy, MDLong Beach, CA 908131568476513
- Minh Nguyen, MDLong Beach, CA 908131922160613
Common questions
What is Gregory Samuel Yung, DO's NPI number?
Gregory Samuel Yung, DO's National Provider Identifier (NPI) is 1568111466, issued on Mar 20, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Samuel Yung, DO located?
The NPPES record lists a practice address at 1045 Atlantic Ave Ste 708, Long Beach, CA, 90813. Phone: (562) 491-9140. Providers update this record themselves, so call before visiting.
How can I verify Gregory Samuel Yung, DO's license?
NPPES lists California license number 20A22130, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Samuel Yung, DO prescribe under Medicare Part D?
In 2024, Gregory Samuel Yung, DO had 392 Medicare Part D claims for 64 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.