Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Chidambaram S. Valliappan, MD

Works at hospitals in Orlando, FL · Ocoee, FL · Florida

Summary

Dr. Chidambaram S. Valliappan, MD is an internal medicine doctor at 3727 N Goldenrod Rd, Suite 105, Winter Park, FL 32792. Phone: (407) 657-0296. Accepts Medicare assignment. In 2024, Chidambaram S. Valliappan had 354 Original Medicare patients and 1,664 services. NPI 1265815021. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Chidambaram S. Valliappan, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Chidambaram S. Valliappan accept Medicare assignment?
Yes. Medicare's clinician data says Chidambaram S. Valliappan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Chidambaram S. Valliappan see?
In 2024, CMS data shows 354 Original Medicare patients and 1,664 services for Chidambaram S. Valliappan. This counts Original Medicare only and measures volume, not quality.
What is Chidambaram S. Valliappan's NPI number?
1265815021. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Chidambaram S. Valliappan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients354
Services billed to Medicare1,664
Different services or procedures29
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)355 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)325 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)272 services
  4. 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's (G2211)240 services
  5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)113 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Chronic kidney disease75%
  • Diabetes68%
  • Ischemic heart disease61%
  • Heart failure51%

Hospitals where Chidambaram S. Valliappan works

Medicare's Facility Affiliation Data lists Chidambaram S. Valliappan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • AdventHealth OrlandoOrlando, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100007
  • Orlando HealthOrlando, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100006
  • Orlando Health-Health Central HospitalOcoee, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100030

Practice locations

Addresses where Chidambaram S. Valliappan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Chidambaram S. Valliappan as a member of this group (CMS data updated October 2, 2026).

  • Central Florida Kidney Specialists Inc40 clinicians in the group

Specialties

Find other Internal Medicine doctors in Florida →

Other internal medicine doctors in Winter Park

Clinicians with the same Medicare primary specialty in Winter Park, FL — not a recommendation.

All internal medicine doctors in Winter Park →

Other clinicians in Central Florida Kidney Specialists Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1265815021
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians