Justin Hahn, DO
Internal Medicine Physician · Rockville, MD
Justin Hahn, DO is an internal medicine physician with a practice address in Rockville, Maryland, and NPI 1609404458, issued on Mar 28, 2020. Check the license (Maryland H96299, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Justin Hahn
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- H96299 MD
Self-reported in NPPES; status is on the state search - Practice location
- 14955 Shady Grove RD Ste 100, Rockville, MD 20850
- Phone
- (301) 990-3190
- Enumerated
- Mar 28, 2020
- Record last updated
- Feb 2, 2024
- Fax
- (410) 367-2021
- Medicare enrollment
- Enrolled (PECOS I20230912003659); accepts Medicare assignment
- Medical or professional school
- Nova Southeastern College Of Osteo Medicine, 2020
- 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 14955 Shady Grove RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Justin Hahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H96299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,557 Medicare Part D claims for 293 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium182 claims
- Losartan Potassium92 claims
- Amlodipine Besylate74 claims
- Metformin Hcl72 claims
- Levothyroxine Sodium57 claims
- Rosuvastatin Calcium51 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: $169.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Eko Health, 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.
Bills Medicare through 3 group practices
- Frederick Health Hospital IncFrederick, MD
- Johns Hopkins Community Physicians, IncLaurel, MD
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Hahn among 3,904 internal medicine physician records in Maryland
Justin Hahn, DO 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 2020, is newer than 89% of them.
- NPI issued2020 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2003 among the 2,445 with a school on file
- Record last updated2024 · 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 Justin Hahn, DO's NPI number?
Justin Hahn, DO's National Provider Identifier (NPI) is 1609404458, issued on Mar 28, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Justin Hahn, DO located?
The NPPES record lists a practice address at 14955 Shady Grove RD Ste 100, Rockville, MD, 20850. Phone: (301) 990-3190. Providers update this record themselves, so call before visiting.
How can I verify Justin Hahn, DO's license?
NPPES lists Maryland license number H96299, 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 Justin Hahn, DO prescribe under Medicare Part D?
In 2024, Justin Hahn, DO had 1,557 Medicare Part D claims for 293 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.