Ramanathan Madras Seshadri, M.D.
NPI 1891969937 · Surgical Oncology Physician · Danbury, CT
Enrolled with Medicare as Practitioner - Surgical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ramanathan Madras Seshadri, M.D. is a Surgical Oncology Physician provider in Danbury, CT (NPI 1891969937).
Provider details
- NPI number
- 1891969937
- Entity type
- Individual
- Primary specialty
- Surgical Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2013-00912 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
150 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $97 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 29 | $139 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 17 | $139 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 16 | $9 |
| Removal of Gallbladder Using an Endoscope47562 | 16 | $672 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,456 across 16 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 (1)
- 24 Stevens StNorwalk, CT 06850-3852Phone: (203) 845-4811Fax: (203) 899-5096
Registry dates
- Enumerated
- 2008-04-18
- Last updated
- 2020-10-12
- Certified
- 2020-10-12
Frequently asked questions
- What is Ramanathan Madras Seshadri's NPI number?
- Ramanathan Madras Seshadri's National Provider Identifier (NPI) is 1891969937, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ramanathan Madras Seshadri's specialty?
- Ramanathan Madras Seshadri is listed in the NPPES registry with a primary specialty of Surgical Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Ramanathan Madras Seshadri located?
- Ramanathan Madras Seshadri's practice location on file with NPPES is 24 Hospital Ave, Danbury, CT 06810-6099.
- What is Ramanathan Madras Seshadri's phone number?
- The practice phone number listed in the NPPES registry for Ramanathan Madras Seshadri is (203) 739-7000.
- Does Ramanathan Madras Seshadri accept Medicare?
- Ramanathan Madras Seshadri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ramanathan Madras Seshadri's NPI active?
- Yes — Ramanathan Madras Seshadri's NPI (1891969937) is active in the NPPES registry as of the last update on 2020-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.