Kathryn Masselam Hatch, M.D.
NPI 1528265824 · Ophthalmology Physician · Watham, MA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Masselam Hatch, M.D. is a Ophthalmology Physician provider in Watham, MA (NPI 1528265824).
Provider details
- NPI number
- 1528265824
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 231448 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
931 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Scan of Cornea92025 | 174 | $38 |
| Established Patient Complete Exam of Visual System92014 | 127 | $140 |
| Established Patient Problem Focused Exam of Visual System92012 | 120 | $100 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 76 | $49 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $140 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 60 | $181 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 116 | 78 |
| Erythromycin Basebrand: Erythromycin | 51 | 31 |
| Cyclosporinebrand: Restasis | 39 | 17 |
| Cyclosporine | 30 | 12 |
| Doxycycline Monohydrate | 30 | 16 |
| Loteprednol Etabonate | 27 | 19 |
| Cyclosporinebrand: Restasis Multidose | 25 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,700 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 110 Hartwell Ave Ste 101Lexington, MA 02421-3118Phone: (781) 890-1023
- 110 Hartwell Ave Ste 201Lexington, MA 02421-3134Phone: (781) 890-1023
Registry dates
- Enumerated
- 2007-06-29
- Last updated
- 2025-08-05
- Certified
- 2025-08-05
Frequently asked questions
- What is Kathryn Masselam Hatch's NPI number?
- Kathryn Masselam Hatch's National Provider Identifier (NPI) is 1528265824, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Masselam Hatch's specialty?
- Kathryn Masselam Hatch is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Masselam Hatch located?
- Kathryn Masselam Hatch's practice location on file with NPPES is 1601 Trapelo Rd, Watham, MA 02451.
- What is Kathryn Masselam Hatch's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Masselam Hatch is (781) 890-1023.
- Does Kathryn Masselam Hatch accept Medicare?
- Kathryn Masselam Hatch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Masselam Hatch's NPI active?
- Yes — Kathryn Masselam Hatch's NPI (1528265824) is active in the NPPES registry as of the last update on 2025-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.