Marianne Casilla-Lennon, MD
NPI 1477081594 · Urology Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marianne Casilla-Lennon, MD is a Urology Physician provider in New Haven, CT (NPI 1477081594).
Provider details
- NPI number
- 1477081594
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 72407 (CT)
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
223 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 61 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 36 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $100 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 61 | 33 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 51 | 12 |
| Mirabegronbrand: Myrbetriq | 49 | 18 |
| Finasteride | 41 | — |
| Solifenacin Succinate | 41 | — |
| Vibegronbrand: Gemtesa | 34 | — |
| Trospium Chloride | 21 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-06-02
- Last updated
- 2023-05-04
- Certified
- 2023-05-04
Frequently asked questions
- What is Marianne Casilla-Lennon's NPI number?
- Marianne Casilla-Lennon's National Provider Identifier (NPI) is 1477081594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianne Casilla-Lennon's specialty?
- Marianne Casilla-Lennon is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Marianne Casilla-Lennon located?
- Marianne Casilla-Lennon's practice location on file with NPPES is 20 York Street, New Haven, CT 06510-3220.
- What is Marianne Casilla-Lennon's phone number?
- The practice phone number listed in the NPPES registry for Marianne Casilla-Lennon is (203) 688-4242.
- Does Marianne Casilla-Lennon accept Medicare?
- Marianne Casilla-Lennon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marianne Casilla-Lennon's NPI active?
- Yes — Marianne Casilla-Lennon's NPI (1477081594) is active in the NPPES registry as of the last update on 2023-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.