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SIVASEKARAN, RATNASABAPATHYMD NPI 1114954476 Clinician

Internal Medicine · OCALA, FL

Specialty Internal Medicine — from billed Medicare claims
In practice about 25 years since medical school (class of 2001, self-reported to CMS)
Location OCALA, FL · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 68 codes billed · 23,902 disclosed services (CY2024 — most recent year in data)
Current groups
member of 2 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
CORA HEALTH SERVICES INC
2026
HOSPITALISTS GROUP OF FLORIDA PLLC
2019–2026
SKS MEDICAL PLLC
2020

The roster archive begins in 2019, so a span starting at 2019 may reach back further. Membership spans only — no volume is attributed to any group here.

NPPES registry · CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · NPPES record last updated 2010-03

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The billed-volume positioning, practice focus, and economics behind this provider — computed on the same disclosed Medicare Part B data.

This provider's disclosed Medicare payments across all codes were in CY2024. Unlock to see the figure.

  • Payment, service & beneficiary totals — the disclosed scale, all codes
  • Practice profile — focus & reach — top codes by share of services
  • Office vs. facility setting mix — place-of-service code split
  • Volume over five years — discrete yearly counts, no rate
  • Peer positioning — service volume — percentile among specialty peers, cohort & year disclosed
  • Peer positioning — code breadth — how many codes billed, vs peers

Peer positioning shows billed-volume and code-breadth positions among specialty peers, not measures of care (a provider's true volume position can only be higher, never lower). All figures disclosed Medicare Part B fee-for-service; volumes are personal to this NPI, not attributed to any group.

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Procedures billed to Medicare Part B (2024)

Medicare Part B FFS · CY2024 · as published by CMS
CodeDescription Services Beneficiary-episodes Avg charge Avg Medicare payment
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
82172 Apolipoprotein level
99239 Hospital discharge day management, more than 30 minutes
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
36415 Insertion of needle into vein for collection of blood sample
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
84443 Blood test, thyroid stimulating hormone (tsh)
84481 Thyroid hormone, t3 measurement, free
80053 Blood test, comprehensive group of blood chemicals
83735 Magnesium level
80061 Blood test, lipids (cholesterol and triglycerides)
83036 Hemoglobin a1c level
83540 Iron level
83615 Lactate dehydrogenase (enzyme) level
83550 Iron binding capacity
96372 Injection of drug or substance under skin or into muscle
84100 Phosphate level
82607 Cyanocobalamin (vitamin b-12) level
82728 Ferritin (blood protein) level
84550 Uric acid level, blood
83525 Insulin measurement, total
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
82550 Creatine kinase (cardiac enzyme) level, total
82746 Folic acid level, serum
84439 Thyroxine (thyroid chemical), free
83090 Homocysteine (amino acid) level
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
82044 Urine microalbumin (protein) analysis
84681 C-peptide (protein) level
82306 Vitamin d-3 level
86140 Measurement c-reactive protein for detection of infection or inflammation
86141 Measurement c-reactive protein for detection of infection or inflammation, high sensitivity
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
83970 Parathormone (parathyroid hormone) level
83001 Gonadotropin, follicle stimulating (reproductive hormone) level
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
G0008 Administration of influenza virus vaccine
84270 Sex hormone binding globulin (protein) level
99406 Smoking and tobacco use intensive counseling, 4-10 minutes
93306 Ultrasound of heart with color-depicted blood flow, rate, direction and valve function
82533 Cortisol (hormone) measurement, total
82670 Measurement of total estradiol (hormone)
84146 Prolactin (milk producing hormone) level
84403 Testosterone (hormone) level, total
83002 Gonadotropin, luteinizing (reproductive hormone) level
84144 Progesterone (reproductive hormone) level
90653 Influenza vaccine, inactivated
93880 Ultrasound of both sides of head and neck blood flow
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
82626 Dehydroepiandrosterone (dhea) hormone level
80069 Kidney function blood test panel
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
99496 Transitional care management services for problem of high complexity
93925 Ultrasound of leg arteries or artery grafts
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
81003 Automated urinalysis test
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
84153 Psa (prostate specific antigen) measurement, total
82627 Dehydroepiandrosterone (dhea-s) hormone level
93978 Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
G0103 Prostate cancer screening; prostate specific antigen test (psa)
80048 Blood test, basic group of blood chemicals (calcium, total)
90661 Influenza vaccine, trivalent derived from cell cultures
99495 Transitional care management services for problem of at least moderate complexity

These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.