Nnennaya Duke, DO
NPI 1992144190 · Family Medicine Physician · Waterbury, CT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nnennaya Duke, DO is a Family Medicine Physician provider in Waterbury, CT (NPI 1992144190).
Provider details
- NPI number
- 1992144190
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
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
83% 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 · 72 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 103 | 40 |
| Rosuvastatin Calcium | 89 | 42 |
| Atorvastatin Calcium | 87 | 36 |
| Levocetirizine Dihydrochloride | 83 | 37 |
| Losartan Potassium | 74 | 39 |
| Diclofenac Sodium | 68 | 25 |
| Pantoprazole Sodium | 68 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$545 across 23 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
- 2013-06-20
- Last updated
- 2016-07-20
Frequently asked questions
- What is Nnennaya Duke's NPI number?
- Nnennaya Duke's National Provider Identifier (NPI) is 1992144190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nnennaya Duke's specialty?
- Nnennaya Duke is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nnennaya Duke located?
- Nnennaya Duke's practice location on file with NPPES is 51 N Elm St, Waterbury, CT 06702-1545.
- What is Nnennaya Duke's phone number?
- The practice phone number listed in the NPPES registry for Nnennaya Duke is (203) 574-4000.
- Does Nnennaya Duke accept Medicare?
- Nnennaya Duke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nnennaya Duke's NPI active?
- Yes — Nnennaya Duke's NPI (1992144190) is active in the NPPES registry as of the last update on 2016-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.