RAMANATHAN MADRAS SESHADRI (M.D.) – Surgical Oncology Physician, NPI 1891969937

RAMANATHAN MADRAS SESHADRI (M.D.) is a healthcare provider. based in Norwalk, Connecticut. specializing in SURGICAL ONCOLOGY. They hold the professional credentials M.D.. They hold a License No. 2013-00912 (NC). The NPI Number for RAMANATHAN MADRAS SESHADRI (M.D.) is 1891969937

Main info

Male
24 Years Of Experience
Accepts Medicare Assignment
Name
RAMANATHAN MADRAS SESHADRI (M.D.)
NPI
1891969937
Phone
(203) 845-4811
Address
24 Stevens St
Enumeration Date
18 April 2008
Last Update Date
12 October 2020

Doctor Profile

Medical School Name
OTHER
Secondary Phone
2037397029
Graduation Year
2002 (24 years ago)
PAC ID
9032343868
Group Practice PAC ID
4789597691
Professional Enrollment ID
I20201118002703
Address ID
CT068106148DA95XXXAVEX300
Telehealth
Yes

Contacts

Secure Messaging
rmadrasseshadri257818@direct.novanthealth.org
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience79
Completeness85
Years active:18State licenses:2Other namesUpdated within 12 months

51 SURGICAL ONCOLOGY in CT

Provider Addresses for RAMANATHAN MADRAS SESHADRI (M.D.)

  • 24 Stevens St

    Norwalk, CT 068503852

    Phone: (203) 845-4811

    Fax: (203) 899-5096

    Type: Location

  • 24, Stevens Street, Norwalk, Fairfield County, Connecticut, 06850, United States

    NORWALK, CT 068503852

    Phone: (203) 845-4811

    Fax: (203) 899-5096

    Type: Mailing

  • Danbury Hospital, 24, Hospital Avenue, Germantown, Danbury, Fairfield County, Connecticut, 06810, United States

    DANBURY, CT 068106099

    Phone: (203) 739-7000

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 32 Open Payments records for all available years, with a total value of $2,990.

Total Amount is formed as General ($2,990) + Research ($0) + Ownership ($0) = $2,990.

Last reported payment date: 2024-12-30 • Largest payer in this snapshot: Intuitive Surgical, Inc. ($2,095).

Total Amount

$2,990

General + Research + Ownership

Payments

32

Total payment records

General Amount

$2,990

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-12-30

Latest reported date

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2020-11-18

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20201118002703ISurgical OncologyCTTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99213Established patient office or other outpatient visit, 20-29 minutes3324$0
99214Established patient office or other outpatient visit, 30-39 minutes2416$0
99205New patient office or other outpatient visit, 60-74 minutes1818$0
99222Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1616$0
99204New patient office or other outpatient visit, 45-59 minutes1414$0
View full utilization report →

Insurance plans in this area (ZIP 06850)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4789597691View full group profile

Reviews

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Frequently asked questions

How do I look up RAMANATHAN MADRAS SESHADRI (M.D.) by NPI?
Use NPI 1891969937 when you need to reference RAMANATHAN MADRAS SESHADRI (M.D.) in forms, claims, or directories.
Does this profile mean RAMANATHAN MADRAS SESHADRI (M.D.) is currently active?
Yes — RAMANATHAN MADRAS SESHADRI (M.D.) appears active in the national provider directory.
What field does RAMANATHAN MADRAS SESHADRI (M.D.) work in?
You can think of RAMANATHAN MADRAS SESHADRI (M.D.) as practicing within Surgical Oncology Physician. Clinical services aligned with this taxonomy classification.
Does RAMANATHAN MADRAS SESHADRI (M.D.) practice in Connecticut?
You will see Norwalk, Connecticut on file for RAMANATHAN MADRAS SESHADRI (M.D.) alongside any extra practice locations.
Is this NPI for an individual or an organization?
This listing corresponds to an Individual Provider.

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