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 California for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to California 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. California (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.

Gigi Chen (NPI 1821073636)

Field	Value
Entity Type	Individual
Organization	Gigi Chen
Address	400 Taylor Blvd
City	Pleasant Hill
State	CA
ZIP	94523
Taxonomy	Hematology & Oncology Physician
NPI Enumerated	December 14, 2005

Payer Source	Total Paid
Medicare	$2.2M
Medicaid	$0

Medicare: Complete Services Breakdown

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

47 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
J9271	Injection, pembrolizumab, 1 mg	33,000	$40	$1.4M
J0897	Injection, denosumab, 1 mg	9,420	$20	$179K
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…	1,320	$110	$146K
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…	580	$160	$93.7K
96413	Chemotherapy is a therapeutic procedure used for the treatment of cancer via the use of chemical agents. These chemical agents (drugs) work on the cancerous cells of the body to destroy them. These…	500	$140	$69.1K
J2506	Injection, pegfilgrastim, excludes biosimilar, 0.5 mg	820	$80	$66.6K
J0885	Injection, epoetin alfa, (for non-esrd use), 1000 units	7,720	$10	$46.3K
99232	The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…	250	$70	$17.7K
J1439	Injection, ferric carboxymaltose, 1 mg	16,330	$1	$16.3K
96417	In this add–on procedure, the provider continues administration of a chemotherapy drug into a vein using an infusion technique. He uses this code to report administration of a different chemotherapy…	210	$70	$13.8K

Showing 1–10 of 47

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 47 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. California Distribution

Gigi Chen — 4 of 25 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — California

Full comparison — all codes billed, vs. state median

47 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
J9271	6	140	13,100	$40	$653.5K
J0897	139	1,030	3,060	$20	$91.4K
J2506	12	70	500	$80	$43.2K
J1439	90	110	29,230	$1	$42.6K
84443	440	620	120	$20	$39.4K
80053	164	950	110	$10	$30.1K
96413	54	620	170	$120	$26.9K
99233	10,119	11,530	120	$100	$26.2K
J0885	15	100	3,100	$10	$25.8K
99214	846	37,970	120	$90	$23.2K

Showing 1–10 of 47

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Stanford Health Care	CA	General Acute Care Hospital	$0	$264.9M
Stanford Health Care	CA	General Acute Care Hospital	$0	$46.2M
John Muir Physician Network	CA	General Practice Physician	$0	$27.1M
Khosrow Mehrany	CA	Specialist	$7.7M	$0
Roger Goldberg	CA	Retina Specialist (Ophthalmology) Physician	$4.6M	$0
Michael Sherman	CA	Hematology & Oncology Physician	$3.9M	$0
Clement Chow	CA	Ophthalmology Physician	$3.8M	$0
Rajiv Nagesetty	CA	Vascular Surgery Physician	$3.6M	$0
Christianne Wa	CA	Retina Specialist (Ophthalmology) Physician	$3.5M	$0
Howard Chen	CA	Ophthalmology Physician	$2.8M	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Robert Robles	CA	Hematology & Oncology Physician	$1.3M	$0
Richard Shinaman	CA	Anesthesiology Physician	$616.4K	$0
Leann Blankenship	CA	Hematology & Oncology Physician	$560.2K	$0
Curtis Raskin	CA	Dermatology Physician	$528.6K	$0
Ruben Kalra	CA	Interventional Pain Medicine Physician	$492.3K	$0
Tiffany Svahn	CA	Hematology & Oncology Physician	$446.5K	$0
Nathaniel Gamsky	CA	Interventional Pain Medicine Physician	$159.1K	$0
Paige Radell	CA	Dermatology Physician	$133.1K	$0
Kyaw Lin	CA	Physical Medicine & Rehabilitation Physician	$100.8K	$0

Gigi Chen — Billing Profile & Reimbursement Data

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Gigi Chen — Billing Profile & Reimbursement Data

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Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Nearby Providers

Frequently Asked Questions

References