Cassandra Y. Gryczewski, ACAGNP
NPI 1851796551ActiveIndividual· Nurse Practitioner, Adult Health· Wethersfield, CT
Nurse Practitioner, Adult Health (ACAGNP) in Wethersfield, Connecticut, trained at University of Connecticut School of Medicine (class of 2014). 64 Medicare patients in 2024, $12,409 paid; nearly all of their 84 Part D prescriptions were generic (90%). Gilead Sciences, Inc. was the largest of 4 companies reporting payments in 2025, $81.50 in all, mostly food and beverage.
Overview
| NPI | 1851796551 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ACAGNP |
| Sole proprietor | No |
| NPI issued | Oct 24, 2014 |
| Last updated in NPPES | May 21, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | 005962 | CT |
| Nurse Practitioner | 363L00000X | 005962 | CT |
| Nurse Practitioner, Acute Care | 363LA2100X | 005962 | CT |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 64 |
|---|---|
| Services billed | 193 across 7 procedure codes |
| Paid by Medicare | $12,409 |
Part D prescriptions in 2024
| Prescriptions (claims) | 84 · 167 30-day fills |
|---|---|
| Patients | 36 |
| Total drug cost | $14,649 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Connecticut School of Medicine |
|---|---|
| Graduation year | 2014 |
| Medicare specialty | Nurse Practitioner |
Medical group
- Starling Physicians, PLLCWethersfield, CT · 283 clinicians
Hospital affiliation
- Hartford HospitalHartford, CT
Industry payments (Open Payments)
- 2025$81.50 · 4 payments from 4 companies
- 2024$122.24 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $24.60 | 1 |
| Celgene Corporation | $20.48 | 1 |
| Abbvie Inc. | $19.16 | 1 |
| Springworks Therapeutics, Inc. | $17.26 | 1 |
What the 2025 payments were for
- Food and Beverage$81.50 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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