Sungyon C. Jang, M.D.
Internal Medicine Physician · Baltimore, MD
Sungyon C. Jang, M.D. is an internal medicine physician with a practice address in Baltimore, Maryland, and NPI 1477519304, issued on Apr 20, 2006. Check the license (Maryland D0055698, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Sungyon C. Jang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0055698 MD
Self-reported in NPPES; status is on the state search - Practice location
- 10 N Greene St, Baltimore, MD 21201
- Phone
- (410) 605-7000
- Enumerated
- Apr 20, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (410) 605-7912
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 10 N Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sungyon C. Jang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0055698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
33 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Sungyon C. Jang among 3,904 internal medicine physician records in Maryland
Sungyon C. Jang, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 59% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,278 internal medicine physician records list a practice address in Baltimore
They are 1,278 of the 35,183 NPPES records with a practice address in Baltimore, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Baltimore → Internal Medicine Physician nationwide →
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Common questions
What is Sungyon C. Jang, M.D.'s NPI number?
Sungyon C. Jang, M.D.'s National Provider Identifier (NPI) is 1477519304, issued on Apr 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sungyon C. Jang, M.D. located?
The NPPES record lists a practice address at 10 N Greene St, Baltimore, MD, 21201. Phone: (410) 605-7000. Providers update this record themselves, so call before visiting.
How can I verify Sungyon C. Jang, M.D.'s license?
NPPES lists Maryland license number D0055698, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sungyon C. Jang, M.D. prescribe under Medicare Part D?
In 2024, Sungyon C. Jang, M.D. had 33 Medicare Part D claims; 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.