Guillermo Alfred Balfour, MD
Pediatrics Physician · Washington, DC
Guillermo Alfred Balfour, MD is a pediatrics physician with a practice address in Washington, District of Columbia, and NPI 1366412520, issued on Jan 23, 2006. Check the license (District of Columbia MD3823, as entered in NPPES) on the District of Columbia Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Guillermo Alfred Balfour
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- MD3823 DC
Self-reported in NPPES; status is on the state search - Practice location
- 3301 New Mexico Ave NW, Washington, DC 20016
- Phone
- (202) 537-1180
- Enumerated
- Jan 23, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (202) 244-7410
- Entity
- Type 1 · individual
Also registered at 3301 New Mexico Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Guillermo Alfred Balfour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD3823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
591 pediatrics physician records list a practice address in Washington
They are 591 of the 45,857 NPPES records with a practice address in Washington, and 593 pediatrics physician records in District of Columbia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 591 in Washington → All 593 in District of Columbia → Every provider in Washington →
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Common questions
What is Guillermo Alfred Balfour, MD's NPI number?
Guillermo Alfred Balfour, MD's National Provider Identifier (NPI) is 1366412520, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Guillermo Alfred Balfour, MD located?
The NPPES record lists a practice address at 3301 New Mexico Ave NW, Washington, DC, 20016. Phone: (202) 537-1180. Providers update this record themselves, so call before visiting.
How can I verify Guillermo Alfred Balfour, MD's license?
NPPES lists District of Columbia license number MD3823, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. 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. 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.