Young Chang, MD
Internal Medicine Physician · Tamuning, GU
Young Chang, MD is an internal medicine physician with a practice address in Tamuning, Guam, and NPI 1639218290, issued on Feb 6, 2007. Check the license (Guam M1121, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Young Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- M1121 GU
Self-reported in NPPES; status is on the state search - Practice location
- 416 Chalan San Antonio RD, Tamuning, GU 96913
- Phone
- (671) 646-2984
- Enumerated
- Feb 6, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (671) 646-4688
- Medicare enrollment
- Enrolled (PECOS I20040316000581); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 24 in Guam → Look up another NPI →
Verify Young Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M1121Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,666 Medicare Part D claims for 89 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 31 claims were for opioids.
Most prescribed
- Atorvastatin Calcium385 claims
- Amlodipine Besylate273 claims
- Nifedipine Er118 claims
- Glipizide108 claims
- Pantoprazole Sodium106 claims
- Metoprolol Succinate82 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Young Chang among 24 internal medicine physician records in Guam
Young Chang, MD is one of 24 internal medicine physician records with a practice address in Guam. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1986 · median 1993 among the 16 with a school on file
- Record last updated2007 · 50% 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 Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 internal medicine physician records list a practice address in Tamuning
They are 12 of the 411 NPPES records with a practice address in Tamuning, and 24 internal medicine physician records in Guam.
All 24 in Guam → Every provider in Tamuning → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leopoldo Arcilla, MDMangilao, GU 969131144364753
- Ellen Bez, MDTamuning, GU 969131649484197
- Alix Chenet, MDOka Tamuning, GU 969131669530507
- Vincent Duenas, MDTamuning, GU 969131831244888
- Pablo Guzman, M.D.Tamuning, GU 969131023081304
- Johnny Lim, M.D.Tamuning, GU 969131265494868
- Doris Lim, M.D.Tamuning, GU 969131295790178
- Florencio Lizama, M.D.Tamuning, GU 969131538220553
Common questions
What is Young Chang, MD's NPI number?
Young Chang, MD's National Provider Identifier (NPI) is 1639218290, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Young Chang, MD located?
The NPPES record lists a practice address at 416 Chalan San Antonio RD, Tamuning, GU, 96913. Phone: (671) 646-2984. Providers update this record themselves, so call before visiting.
How can I verify Young Chang, MD's license?
NPPES lists Guam license number M1121, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Young Chang, MD prescribe under Medicare Part D?
In 2024, Young Chang, MD had 2,666 Medicare Part D claims for 89 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Young Chang, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.