William Xuan Nghiem, MD
Vascular & Interventional Radiology Physician · Germantown, MD
William Xuan Nghiem, MD is a vascular & interventional radiology physician with a practice address in Germantown, Maryland, and NPI 1851559223, issued on Jun 1, 2008. Check the license (Maryland D78132, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- William Xuan Nghiem
- Credential
- MD
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License number
- D78132 MD
Self-reported in NPPES; status is on the state search - Practice location
- 20410 Observation Drive, Germantown, MD 20876
- Phone
- (301) 212-4264
- Enumerated
- Jun 1, 2008
- Record last updated
- Jun 26, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 546202900 MD
- Medicare enrollment
- Enrolled (PECOS I20160202000331); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 95 in Maryland → Look up another NPI →
Verify William Xuan Nghiem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D78132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 91.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $671.88
22 payments; by number, the most common kind was food and beverage; the largest payer was Nevro Corp. The 3,457 providers of this specialty with any payment received $7,206.73 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 one group practice
- Horizon Surgical Group PAFrederick, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Xuan Nghiem among 95 vascular & interventional radiology physician records in Maryland
William Xuan Nghiem, MD is one of 95 vascular & interventional radiology physician records with a practice address in Maryland. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 42% of them.
- NPI issued2008 · 42% of these records are older, 48% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2008 · median 2006 among the 75 with a school on file
- Record last updated2015 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular & Interventional Radiology Physician providers in Maryland
There are 95 vascular & interventional radiology physician records in Maryland.
All 95 in Maryland → Every provider in Germantown → Vascular & Interventional Radiology Physician nationwide →
The 8 vascular & interventional radiology physician records with the nearest ZIP codes
- Zahide Erkmen, M.D.Germantown, MD 208761144291022
- Akemi Miller, MDGermantown, MD 208761184859589
- Clayton Brittingham, DOBethesda, MD 208891568825248
- Alain Drooz, MDBethesda, MD 208891922032119
- John Dryden, M.D.Bethesda, MD 208891275971699
- Donald Miller, M.D.Bethesda, MD 208891497725923
- Kyrollos Tawfik, M.D.Bethesda, MD 208891265812259
- Richard ChangBethesda, MD 208921437587680
Common questions
What is William Xuan Nghiem, MD's NPI number?
William Xuan Nghiem, MD's National Provider Identifier (NPI) is 1851559223, issued on Jun 1, 2008. An NPI identifies a provider in billing; it is not a license.
Where is William Xuan Nghiem, MD located?
The NPPES record lists a practice address at 20410 Observation Drive, Germantown, MD, 20876. Phone: (301) 212-4264. Providers update this record themselves, so call before visiting.
How can I verify William Xuan Nghiem, MD's license?
NPPES lists Maryland license number D78132, 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.
What is William Xuan Nghiem, MD's MIPS final score?
The 2023 MIPS final score is 91.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.