Kathryn L. Masselam Hatch, M.D.
NPI 1528265824ActiveIndividual· Ophthalmology· Watham, MA
Ophthalmology (M.D.) in Watham, Massachusetts, trained at University of Vermont College of Medicine (class of 2003). In 2024 Medicare paid $124,803 for 301 patients, and Part D covered 571 of their prescriptions, 42% of them generic. Glaukos Corporation was the largest of 10 companies reporting payments in 2025, $21,554 in all, mostly consulting fees.
Overview
| NPI | 1528265824 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 29, 2007 |
| Last updated in NPPES | Aug 5, 2025 |
| Certified by provider | Aug 5, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 231448 | MA |
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 - Ophthalmology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 301 |
|---|---|
| Services billed | 1,035 across 39 procedure codes |
| Paid by Medicare | $124,803 |
Part D prescriptions in 2024
| Prescriptions (claims) | 571 · 800 30-day fills |
|---|---|
| Patients | 190 |
| Total drug cost | $144,016 |
| Generic share | 42% of claims |
Education and affiliations
| Medical school | University of Vermont College of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Ophthalmology |
Medical group
- Massachusetts Eye and Ear Associates, IncBoston, MA · 433 clinicians
Hospital affiliations
- Massachusetts Eye and Ear Infirmary -Boston, MA
- Massachusetts General HospitalBoston, MA
Industry payments (Open Payments)
- 2025$21,554 · 26 payments from 10 companies
- 2024$4,700 · 13 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaukos Corporation | $13,807 | 8 |
| Tarsus Pharmaceuticals, Inc. | $5,149 | 6 |
| Sight Sciences, Inc. | $1,214 | 2 |
| Carl Zeiss Meditec, Inc. | $750.00 | 1 |
| Alcon Vision LLC | $225.84 | 3 |
What the 2025 payments were for
- Consulting Fee$16,675 · 7 payments
- Travel and Lodging$2,231 · 2 payments
- Food and Beverage$1,459 · 14 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,125 · 1 payment
- Gift$36.06 · 1 payment
- Honoraria$27.78 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records