Why are Medicare and Medicaid shown separately instead of combined?

They come from two different CMS data sources with no shared claim identifier, so they can't be reconciled into one number without double-counting or guessing. Every table and chart on this page keeps them fully separate.

Why is there no private/commercial revenue figure?

Private and commercial payer data comes from Transparency in Coverage files, which only publish negotiated rates — not claims or utilization volume. Without a volume figure, no revenue number can be computed for any provider from that data.

What does "Rank" mean in the Competitive Analysis & Benchmarks tables?

For a given CPT/HCPCS code, it's this provider's position by claims volume among all providers billing that same code at that geography level (State, National, or Arizona for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to Arizona only?

Medicaid is administered per-state with no single national fee schedule, so a state or national comparison the way Medicare has one isn't available. Arizona (this provider's own state) is the only grouping that's conceptually meaningful.

Why are the numbers rounded to the nearest 10?

To avoid implying more precision than the underlying data supports at a single-provider level. Ratios are kept precise since they're a relative comparison, not a volume or dollar figure.

How current is this data?

The Medicare and Medicaid tables are both single current snapshots, not refreshed on a recurring schedule yet.

Kumaraswamy Sivakumar (NPI 1821035254)

Field	Value
Entity Type	Individual
Organization	Kumaraswamy Sivakumar
Address	4545 E Shea Blvd
City	Phoenix
State	AZ
ZIP	85028
Taxonomy	Neuromuscular Medicine (Psychiatry & Neurology) Physician
NPI Enumerated	June 2, 2006

Payer Source	Total Paid
Medicare	$3.5M
Medicaid	$0

Key Findings

The provider’s service mix is heavily focused on immune globulin therapy and outpatient infusion services: the three highest-revenue codes are J1556, J1459, and J1576 (immune globulin products administered intravenously), and the largest single code J1556 lists 44.4K claims with $2.5M in Medicare revenue. This code profile and claim counts are consistent with an infusion-centered practice model rather than a clinic driven primarily by face-to-face evaluation and management visits.

Revenue is extremely concentrated in a very small set of drugs: the top 3 Medicare codes by revenue (J1556, J1459, J1576) account for 96.2% of this provider's total Medicare revenue. Individually those codes are reported as $2.5M (71.9% of Medicare revenue) for J1556, $573.5K (16.6%) for J1459, and $265.2K (7.7%) for J1576, showing that nearly all Medicare dollars derive from IVIG product administration.

This provider is effectively single-payer in scope: total Medicare revenue is $3.5M while there is no Medicaid billing on file, so the practice’s payer exposure is heavily concentrated in Medicare. That payer concentration increases sensitivity to Medicare reimbursement policy or utilization-management changes for IVIG products and infusion services.

Competitive standing on the top product lines is mixed: J1556 ranks #5 of 46 providers nationally and is described as "notably above typical national volume for this code," indicating a major national presence for that specific IVIG product. By contrast J1459 ranks #5 of 44 providers (described as "typical, unremarkable volume") and J1576 ranks #3 of 7 providers (described as "typical, unremarkable volume"), so strength is most pronounced for J1556 while the other IVIG products appear less distinguishing against national peers.

Infusion administration and duration codes indicate high operational throughput: 96365 is described as "notably above typical national volume" (571 claims, $27.4K revenue) and 96366 is an "extreme outlier, far above typical national volume" (1.4K claims, $21.6K revenue). The elevated volumes for both initial and additional-hour infusion codes reinforce that the practice performs frequent, sometimes prolonged, IV infusions rather than sporadic single-dose administrations.

Evaluation-and-management activity represents a small share of revenue: 99214 generated $48.8K (1.4% of Medicare revenue) across 548 claims and 99215 and 99204 together contribute only modest additional amounts. This pattern suggests clinical E&M visits are ancillary to the infusion business, with face-to-face evaluation contributing little to overall Medicare dollars compared with infusion drug revenue.

The provider has long-standing Medicare enrollment, with an NPI enumerated on 2006-06-02 (~20 years ago), indicating sustained participation in Medicare lines of business. That tenure supports the interpretation that the current infusion-centered billing patterns are established and not purely transient.

Business risk and monitoring priorities are clear: because a very large share of revenue depends on a small number of high-cost IVIG codes (J1556/J1459/J1576) and Medicare is the only payer on file, analysts should treat changes in IVIG reimbursement, product mix, utilization management, or Medicare coverage policy as primary drivers of revenue volatility for this entity. Operationally, the presence of extreme outlier volumes on infusion time codes (96366) also warrants periodic review of throughput and documentation practices relative to peer norms.

Medicare: Complete Services Breakdown

The CPT/HCPCS codes generating the most Medicare revenue for this provider.

12 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
J1556	Injection, immune globulin (bivigam), 500 mg	44,440	$60	$2.5M
J1459	Injection, immune globulin (privigen), intravenous, non-lyophilized (e.g., liquid), 500 mg	15,500	$40	$573.5K
J1576	Injection, immune globulin (panzyga), intravenous, non-lyophilized (e.g., liquid), 500 mg	5,100	$50	$265.2K
99214	The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a moderate level of medical decision making, and/or the…	550	$90	$48.8K
96365	The provider administers the initial intravenous infusion of a medication or other substance for a period up to one hour to prevent, treat, or diagnose a condition or disease.	570	$50	$27.4K
96366	The provider administers an intravenous infusion or infusions of a medication for an additional hour or subsequent hours after the first hour to prevent, treat, or diagnose a condition or disease.	1,440	$20	$21.6K
99215	The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a high level of medical decision making, and/or the…	80	$140	$10.2K
99204	The provider sees a new patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a moderate level of medical decision making, and/or the provider…	80	$130	$10K
95886	The provider assesses the electrical activity of a muscle in the extremity and related paraspinal areas. At the same session as a separately reportable nerve conduction study. He studies five or more…	100	$80	$7.5K
95911	In this procedure, the provider performs nine or ten nerve conduction studies, a diagnostic test to evaluate function, especially the electrical conduction ability of the motor and sensory nerves of…	30	$170	$5.5K

Showing 1–10 of 12

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 12 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Arizona Distribution

Kumaraswamy Sivakumar — 3 of 12 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Arizona

Full comparison — all codes billed, vs. state median

12 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
J1556	1	10	32,030	$60	$1.8M
J1459	1	10	15,500	$40	$579.8K
J1576	1	10	5,100	$50	$262.7K
99214	1,241	10,410	120	$80	$20.6K
95886	63	140	90	$70	$12.1K
99215	1,112	3,270	50	$120	$11.9K
95911	36	80	30	$150	$8.6K
99204	1,424	5,790	40	$110	$6.7K
96365	10	280	60	$50	$4.9K
96366	2	110	60	$20	$2.4K

Showing 1–10 of 12

Related Providers

Other providers that share a Tax Identification Number (TIN) with Kumaraswamy Sivakumar, ranked by combined Medicare and Medicaid revenue.

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Shafeeq Ladha	AZ	Neuromuscular Medicine (Psychiatry & Neurology) Physician	$53.4K	$0

Nearby Providers

Other providers in the same ZIP code as Kumaraswamy Sivakumar, ranked by combined Medicare and Medicaid revenue.

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Wheels On The Bus, Inc.	AZ	Home Health Agency	$0	$14.5M
Laser Surgery Holding Company, Ltd	AZ	Ambulatory Surgical Clinic/Center	$1.3M	$12.3M
Places You'll Go Therapy LLC	AZ	Occupational Therapist	$0	$8.6M
Tania Cortas	AZ	Hematology & Oncology Physician	$1.1M	$0
John Kresl	AZ	Radiation Oncology Physician	$938.6K	$0
Amber Flaherty	AZ	Medical Oncology Physician	$855.2K	$0
Joseph Giancola	AZ	Dermatology Physician	$838.3K	$0
James Foshee	AZ	MOHS-Micrographic Surgery Physician	$805.9K	$0
Lauren Stegman	AZ	Radiation Oncology Physician	$672.9K	$0
Abhilash Nambiar	AZ	Radiation Oncology Physician	$630.3K	$0

Kumaraswamy Sivakumar — Billing Profile & Reimbursement Data

Sign up for Kumaraswamy Sivakumar — Billing Profile & Reimbursement Data policy alerts

Kumaraswamy Sivakumar — Billing Profile & Reimbursement Data

Sign up for Kumaraswamy Sivakumar — Billing Profile & Reimbursement Data policy alerts

Key Findings

Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Nearby Providers

Frequently Asked Questions

References