Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Alyssa Kanagaki Greenleaf, PA-C

Individual provider Medical Physician Assistant · NPI 1861896524

Alyssa Kanagaki Greenleaf, PA-C is a Physician Assistant in Southington, Connecticut. Qualified in 2014, 12 years ago. Practices with The Hospital of Central Connecticut at New Britain General and Bradley, a 392-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Connecticut and Massachusetts.

Years since qualifying
12
Licensed in
CT, MA
In the registry since
2014
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

462 Queen St Ste 303
Southington, CT 06489-1801
Phone: (860) 224-5672
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3300 Main St, Springfield, MA 01199-1619 — (413) 794-7031

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence 4051 (CT)
Medical Physician Assistant Taxonomy 363AM0700X · Licence 5169 (MA)

Record details

NPI number1861896524
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedOctober 9, 2014
Last updated in NPPESMay 22, 2019

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice The Hospital Of Central Connecticut At New Britain General And Bradley — 392 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 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 patients147
Services billed 480 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Compensation for services other than consulting , including serving as faculty or as a speaker at a venue other than a continuing education program $7,200 1 payment
Food and Beverage $2,126 51 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $176 1 payment · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • The Hospital Of Central Connecticut Hospital · New Britain, CT

Colleagues at The Hospital of Central Connecticut at New Britain General and Bradley

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 392 clinicians in the practice; 12 are shown here.

Other providers in Southington