Catherine Joyce
NPI 1265850218 · Internal Medicine Physician · Greenwich, CT
Catherine Joyce is a Internal Medicine Physician provider in Greenwich, CT (NPI 1265850218).
Provider details
- NPI number
- 1265850218
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 056933 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 45 | 13 |
| Atorvastatin Calcium | 43 | 13 |
| Rosuvastatin Calcium | 40 | 17 |
| Amlodipine Besylate | 36 | — |
| Escitalopram Oxalate | 23 | — |
| Atenolol | 23 | — |
| Azithromycin | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$811 across 39 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
Registry dates
- Enumerated
- 2014-04-06
- Last updated
- 2018-01-10
Frequently asked questions
- What is Catherine Joyce's NPI number?
- Catherine Joyce's National Provider Identifier (NPI) is 1265850218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Joyce's specialty?
- Catherine Joyce is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Joyce located?
- Catherine Joyce's practice location on file with NPPES is 5 Perryridge Rd, Greenwich, CT 06830-4608.
- What is Catherine Joyce's phone number?
- The practice phone number listed in the NPPES registry for Catherine Joyce is (203) 863-3409.
- Is Catherine Joyce's NPI active?
- Yes — Catherine Joyce's NPI (1265850218) is active in the NPPES registry as of the last update on 2018-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.