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Guillermo Balfour, MD
NPI 1366412520 · Pediatrics Physician · Washington, DC
Guillermo Balfour, MD is a Pediatrics Physician provider in Washington, DC (NPI 1366412520).
Provider details
- NPI number
- 1366412520
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- MD3823 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
3301 New Mexico Ave Nw
Ste 238
Washington, DC 20016
Phone: (202) 537-1180
Fax: (202) 244-7410
Street-level locationGet directions
Mailing address
3301 New Mexico Ave Nw
Washington, DC 20016
Registry dates
- Enumerated
- 2006-01-23
- Last updated
- 2007-07-08
Frequently asked questions
- What is Guillermo Balfour's NPI number?
- Guillermo Balfour's National Provider Identifier (NPI) is 1366412520, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Balfour's specialty?
- Guillermo Balfour is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Balfour located?
- Guillermo Balfour's practice location on file with NPPES is 3301 New Mexico Ave Nw, Washington, DC 20016.
- What is Guillermo Balfour's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Balfour is (202) 537-1180.
- Is Guillermo Balfour's NPI active?
- Yes — Guillermo Balfour's NPI (1366412520) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.