Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mallory Grosso

Individual provider Physician Assistant · NPI 1558833160

Mallory Grosso is a Physician Assistant in New York, New York. Qualified in 2018, 8 years ago. Practices with Hartford Healthcare Medical Group Specialists PLLC, a 1,537-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
8
Licensed in
CT
In the registry since
2018
Specialties on file
2
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Practice location Address checks out

1275 York Ave
New York, NY 10065-6007
Phone: (212) 639-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 20 York St, New Haven, CT 06510-3220 — (203) 688-4242
  • 34 Maple St, Norwalk, CT 06850-3815 — (203) 852-2000

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence 4368 (CT)
Physician Assistant Taxonomy 363A00000X

Record details

NPI number1558833160
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedDecember 20, 2018
Last updated in NPPESMarch 3, 2021
Certification dateMarch 3, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Hartford Healthcare Medical Group Specialists Pllc — 1537 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients54
Services billed 108 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hartford Healthcare Medical Group Specialists PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1537 clinicians in the practice; 12 are shown here.

Other providers in New York