Mariana Osello
NPI 1780330134 · Physician Assistant · Boston, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariana Osello is a Physician Assistant provider in Boston, MA (NPI 1780330134).
Provider details
- NPI number
- 1780330134
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 7436 (CT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 38 | 37 |
| Cefadroxil | 16 | 16 |
| Celecoxib | 13 | 13 |
| Pantoprazole Sodium | 12 | 12 |
| Ibuprofen | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 2800 Main StBridgeport, CT 06606-4201Phone: (475) 210-5436Fax: (475) 210-6512
- 330 Mount Auburn StCambridge, MA 02138-5502Phone: (617) 492-3500
Registry dates
- Enumerated
- 2022-02-24
- Last updated
- 2026-05-19
- Certified
- 2026-05-19
Frequently asked questions
- What is Mariana Osello's NPI number?
- Mariana Osello's National Provider Identifier (NPI) is 1780330134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariana Osello's specialty?
- Mariana Osello is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariana Osello located?
- Mariana Osello's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Mariana Osello's phone number?
- The practice phone number listed in the NPPES registry for Mariana Osello is (617) 983-7000.
- Does Mariana Osello accept Medicare?
- Mariana Osello is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariana Osello's NPI active?
- Yes — Mariana Osello's NPI (1780330134) is active in the NPPES registry as of the last update on 2026-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.