Guillermo Rivell, M.D., M.S.
NPI 1609219518 · Internal Medicine Physician · Arlington, VA
Enrolled with Medicare as Order and Referring Only - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Rivell, M.D., M.S. is a Internal Medicine Physician provider in Arlington, VA (NPI 1609219518).
Provider details
- NPI number
- 1609219518
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101259990 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
Mailing address
Registry dates
- Enumerated
- 2013-04-10
- Last updated
- 2016-11-14
Frequently asked questions
- What is Guillermo Rivell's NPI number?
- Guillermo Rivell's National Provider Identifier (NPI) is 1609219518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Rivell's specialty?
- Guillermo Rivell is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Rivell located?
- Guillermo Rivell's practice location on file with NPPES is 1625 N George Mason Dr, Arlington, VA 22205-3683.
- What is Guillermo Rivell's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Rivell is (703) 717-4400.
- Does Guillermo Rivell accept Medicare?
- Guillermo Rivell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Rivell's NPI active?
- Yes — Guillermo Rivell's NPI (1609219518) is active in the NPPES registry as of the last update on 2016-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.