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

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

Yi Zhang (NPI 1144356866)

Field	Value
Entity Type	Individual
Organization	Yi Zhang
Address	Massachusetts General Hospital
City	Boston
State	MA
ZIP	02114
Taxonomy	Pain Medicine (Anesthesiology) Physician
NPI Enumerated	February 26, 2007

Payer Source	Total Paid
Medicare	$44.8K
Medicaid	$0

Medicare: Complete Services Breakdown

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

8 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
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…	230	$80	$18K
99443	N/A	140	$80	$11.3K
62327	The provider injects a diagnostic or a therapeutic substance, such as pain medication or a steroid, into the space around the spinal nerves of the lumbar (lower back) or sacral (caudal, or tailbone)…	50	$90	$4.7K
99213	The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a low level of medical decision making, and/or the…	60	$50	$3K
99222	The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…	30	$110	$2.8K
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…	40	$70	$2.5K
62323	The provider injects a diagnostic or a therapeutic substance, such as pain medication or a steroid, into the space around the spinal nerves of the lumbar (lower back) or sacral (caudal, or tailbone)…	20	$80	$1.3K
76942	Ultrasonography uses sound waves of higher frequencies (above the normal hearing capacity of a healthy human, i.e., 20 kHz) to visualize inner organs. When the sound waves pass through the human…	50	$20	$1.1K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 8 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Massachusetts Distribution

Yi Zhang — 0 of 8 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Massachusetts

Full comparison — all codes billed, vs. state median

8 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
99214	3,964	15,410	110	$80	$15.6K
62323	175	190	70	$120	$12.2K
99232	3,813	5,400	70	$60	$9.3K
99213	7,889	13,700	70	$60	$8.8K
62327	1	10	50	$90	$4.7K
99222	1,759	3,420	30	$100	$4.5K
99443	105	1,960	30	$80	$3.8K
76942	40	330	20	$30	$920

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Martha's Vineyard Hospital, Inc.	MA	Critical Access Hospital	$0	$50.4M
Nantucket Cottage Hospital	MA	Rural Acute Care Hospital	$0	$7.1M
Lawrence Proano	RI	Emergency Medicine Physician	$48.4K	$2.3M
Daniel Gorin	MA	Surgery Physician	$1.1M	$0
Adam Cerel	MA	Cardiovascular Disease Physician	$567.7K	$299.4K
Margo Moskos	MA	Diagnostic Radiology Physician	$717.3K	$137.9K
Evangelos Geraniotis	MA	Urology Physician	$758.4K	$0
Carl Schanbacher	MA	Dermatology Physician	$703.9K	$0
John Kalin	MA	Cardiovascular Disease Physician	$617.9K	$0
Donald Grande	MA	Dermatology Physician	$586.3K	$26.9K

Yi Zhang — Billing Profile & Reimbursement Data

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Yi Zhang — 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

Frequently Asked Questions

References