Quick answers
- Does Diomeri Diaz Espinosa accept Medicare assignment?
- Yes. Medicare's clinician data says Diomeri Diaz Espinosa accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Diomeri Diaz Espinosa's NPI number?
- 1538836408. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Diomeri Diaz Espinosa works
Medicare's Facility Affiliation Data lists Diomeri Diaz Espinosa at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010
- North Shore Medical Center -Salem, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220035
Practice locations
Addresses where Diomeri Diaz Espinosa is enrolled with Medicare (CMS data updated October 2, 2026).
- 34 Haverhill StLawrence, MA 01841 (978) 686‑0090
- 500 Merrimack StLawrence, MA 01843 (978) 557‑8900
- 81 Highland AveSalem, MA 01970 (978) 354‑2551
Group practices
Medicare enrollment lists Diomeri Diaz Espinosa as a member of these groups (CMS data updated October 2, 2026).
- Mass General Brigham Medical Group Northern Massachusetts Inc827 clinicians in the group
- Mass General Brigham Community Physicians Inc428 clinicians in the group
- Greater Lawrence Family Health Center Inc122 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lawrence
Clinicians with the same Medicare primary specialty in Lawrence, MA — not a recommendation.
Other clinicians in Mass General Brigham Medical Group Northern Massachusetts Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538836408 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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