Ji Yon Hwang-Ki, M.D.
Internal Medicine Physician · Rockville, MD
Ji Yon Hwang-Ki, M.D. is an internal medicine physician with a practice address in Rockville, Maryland, and NPI 1881899706, issued on Jun 20, 2007. Check the license (Maryland D66159, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Ji Yon Hwang-Ki
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D66159 MD
Self-reported in NPPES; status is on the state search - Practice location
- 14804 Physicians LN, Rockville, MD 20850
- Phone
- (301) 610-6630
- Enumerated
- Jun 20, 2007
- Record last updated
- May 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071029000691); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 14804 Physicians LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sunsoon Cho, LCPCProfessional Counselor1184912479
Verify Ji Yon Hwang-Ki in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D66159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,705 Medicare Part D claims for 347 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 31 claims were for opioids.
Most prescribed
- Atorvastatin Calcium614 claims
- Losartan Potassium462 claims
- Amlodipine Besylate455 claims
- Levothyroxine Sodium315 claims
- Metformin Hcl288 claims
- Tamsulosin Hcl262 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.
Industry payments in 2024: $580.91
18 payments; by number, the most common kind was food and beverage; the largest payer was Revance Therapeutics, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ji Yon Hwang-Ki among 3,904 internal medicine physician records in Maryland
Ji Yon Hwang-Ki, 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 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2000 · median 2003 among the 2,445 with a school on file
- Record last updated2015 · 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).
179 internal medicine physician records list a practice address in Rockville
They are 179 of the 14,353 NPPES records with a practice address in Rockville, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Rockville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mehrdad Akhlaghi, MDRockville, MD 208501124019062
- Steven Braunstein, MDRockville, MD 208501720079502
- Mo-Ping Chow, M.D.Rockville, MD 208501801896550
- Atul Grover, MDRockville, MD 208501386635233
- Sudeepa Gupta, MDRockville, MD 208501134110653
- Konstantin Khludenev, MDRockville, MD 208501538154075
- Robert Kirkcaldy, MDRockville, MD 208501700877651
- Heather Lorenzo, MDRockville, MD 208501700877669
Common questions
What is Ji Yon Hwang-Ki, M.D.'s NPI number?
Ji Yon Hwang-Ki, M.D.'s National Provider Identifier (NPI) is 1881899706, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ji Yon Hwang-Ki, M.D. located?
The NPPES record lists a practice address at 14804 Physicians LN, Rockville, MD, 20850. Phone: (301) 610-6630. Providers update this record themselves, so call before visiting.
How can I verify Ji Yon Hwang-Ki, M.D.'s license?
NPPES lists Maryland license number D66159, 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 Ji Yon Hwang-Ki, M.D. prescribe under Medicare Part D?
In 2024, Ji Yon Hwang-Ki, M.D. had 8,705 Medicare Part D claims for 347 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.