Quick answers
- Where does Jonfranco Barretto see patients?
- Medicare's clinician data lists 3 practice locations, including Lowell, MA and West Yarmouth, MA. Call before your visit to confirm the address.
- What is Jonfranco Barretto's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Jonfranco Barretto accept Medicare assignment?
- Yes. Medicare's clinician data says Jonfranco Barretto accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Jonfranco Barretto?
- (978) 458-1411, as listed in official Medicare / NPI Registry data.
- What is Jonfranco Barretto's NPI number?
- 1336764422. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Jonfranco Barretto is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Hospital DrLowell, MA 01852 (978) 458‑1411
- 21 Aarons WayWest Yarmouth, MA 02673 (508) 760‑2054
- 295 Varnum AveLowell, MA 01854 (978) 937‑6439
Group practices
Medicare enrollment lists Jonfranco Barretto as a member of these groups (CMS data updated 2026-10-02).
- Lowell General Inpatient Specialists PLLC67 clinicians in the group
- BK Primary Care PLLC3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Lowell
Clinicians with the same Medicare primary specialty in Lowell, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336764422 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians