MARIANA OSELLO
NPI 1780330134
Physician Assistant in Boston, MA

Active since February 24, 2022PECOS Enrolled
75 FRANCIS ST, BOSTON, MA 02115(617) 983-7000 Get Directions Write a Review

NPPES record last updated: May 19, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 19, 2026, May 6, 2024, Jul 27, 2022 and 1 more (4 updates tracked since 2022).

About Mariana Osello NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIANA OSELLO (NPI 1780330134) is an individual physician assistant in Boston, Massachusetts, licensed in Connecticut (7436) and active in the NPI registry since February 2022. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1780330134
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMARIANA OSELLO
Location Address75 FRANCIS STBoston, MA 02115-6110
Mailing Address330 Mount Auburn StCambridge, MA 02138-5502 · (617) 492-3500
Sole ProprietorNo
Medical School CMSOtherGraduated 2022
Enumeration DateFebruary 24, 2022
Last NPPES UpdateMay 19, 20264 updates tracked since enumeration
NPPES CertifiedMay 19, 2026
NPI 1780330134 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CT · 7436
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

75 FRANCIS ST, Boston, MA 02115

Secondary Practice Locations 2

Location 1330 Mount Auburn StCambridge, MA 02138-5502 · Phone (617) 492-3500
Location 22800 Main StBridgeport, CT 06606-4201 · Phone (475) 210-5436 · Fax (475) 210-6512

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Mariana Osello is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4789044264
PECOS Enrollment IDI20260527001684
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Pulmonary Disease)
75 FRANCIS ST, BRIGHAM & WOMEN'S HOSPITAL, PULMONARY & CRITICAL CARE
BOSTON, MA 02115
Anesthesiology
75 FRANCIS ST, DEPARTMENT OF ANESTHESIOLOGY CWN L2
BOSTON, MA 02115
Physician Assistant
75 FRANCIS ST
BOSTON, MA 02115
Radiology (Diagnostic Radiology)
75 FRANCIS ST
BOSTON, MA 02115
Psychiatry & Neurology (Psychiatry)
75 FRANCIS ST
BOSTON, MA 02115
Radiology (Diagnostic Radiology)
75 FRANCIS ST, RADIOLOGY, BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115
Internal Medicine (Pulmonary Disease)
75 FRANCIS ST, PULMONARY DIVISION BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115
Radiology (Vascular & Interventional Radiology)
75 FRANCIS ST, RADIOLOGY, BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mariana Osello's NPI number?

The NPI number for Mariana Osello is 1780330134. It was assigned to this individual provider in the NPPES registry on February 24, 2022.

Where is Mariana Osello located?

Mariana Osello practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 983-7000.

What is Mariana Osello's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Mariana Osello enrolled in Medicare?

Yes. Mariana Osello is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mariana Osello was last updated on May 19, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.