Florence Houn, MD
Internal Medicine Physician · Potomac, MD
Florence Houn, MD is an internal medicine physician with a practice address in Potomac, Maryland, and NPI 1528397429, issued on Dec 24, 2009. Check the license (Maryland D0034756, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Florence Houn
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0034756 MD
Self-reported in NPPES; status is on the state search - Practice location
- 10001 Ormond RD, Potomac, MD 20854
- Phone
- (301) 983-0919
- Enumerated
- Dec 24, 2009
- Record last updated
- Dec 24, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 132 MD
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 10001 Ormond RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Goldberger, M.D.Infectious Disease Physician1164751061
Verify Florence Houn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0034756Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $34,950.00
6 payments; by number, the most common kind was consulting fee; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Florence Houn among 3,904 internal medicine physician records in Maryland
Florence Houn, MD 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 2009, is newer than 61% of them.
- NPI issued2009 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2009 · 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).
17 internal medicine physician records list a practice address in Potomac
They are 17 of the 497 NPPES records with a practice address in Potomac, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Potomac → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ira Berger, MDRockville, MD 208541013913284
- Veronica Difresco, MDRockville, MD 208541659376184
- Terri Esterowitz, MDRockville, MD 208541093789653
- Robert Flynn, M.D.Potomac, MD 208541629067681
- Patricia Kellogg, MDRockville, MD 208541235134701
- Shishir Khetan, MDRockville, MD 208541861497372
- Kok-Seah Lee, M.D.Potomac, MD 208541154421022
- Rahul Patel, M.D.Rockville, MD 208541083634034
Common questions
What is Florence Houn, MD's NPI number?
Florence Houn, MD's National Provider Identifier (NPI) is 1528397429, issued on Dec 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Florence Houn, MD located?
The NPPES record lists a practice address at 10001 Ormond RD, Potomac, MD, 20854. Phone: (301) 983-0919. Providers update this record themselves, so call before visiting.
How can I verify Florence Houn, MD's license?
NPPES lists Maryland license number D0034756, 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.
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.