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.

Donovan Grierson (NPI 1154836526)

Field	Value
Entity Type	Individual
Organization	Donovan Grierson
Address	13400 E Shea Blvd
City	Scottsdale
State	AZ
ZIP	85259
Taxonomy	Physician Assistant
NPI Enumerated	December 7, 2017

Payer Source	Total Paid
Medicare	$30.9K
Medicaid	$0

Medicare: Complete Services Breakdown

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

6 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
99223	The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…	100	$120	$11.5K
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…	80	$90	$7K
99238	The provider sees a patient for hospital inpatient or observation discharge day management, involving evaluation and management (E/M). The provider spends 30 minutes or less on the service on the…	120	$50	$6.4K
99239	The provider sees a patient for hospital inpatient or observation discharge day management, involving evaluation and management (E/M). The provider spends more than 30 minutes on the service on the…	40	$80	$2.7K
99236	The provider sees a patient for hospital inpatient or observation care involving evaluation and management (E/M), with an admission encounter and discharge encounter on the same date. The E/M…	10	$140	$1.8K
99235	The provider sees a patient for hospital inpatient or observation care involving evaluation and management (E/M), with an admission encounter and discharge encounter on the same date. The E/M…	20	$110	$1.7K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 6 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Arizona Distribution

Donovan Grierson — 0 of 6 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

6 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
99223	726	2,770	50	$130	$11K
99239	882	1,230	70	$90	$8.4K
99222	271	2,160	30	$100	$4.2K
99236	21	30	20	$150	$3.5K
99235	6	20	20	$120	$3.4K
99238	30	580	20	$60	$2.3K

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Cumberland County Hospital System Inc	NC	Internal Medicine Physician	$0	$8M
Sanjay Garg	NC	Rheumatology Physician	$1.7M	$0
Solomon Ghebregziabiher	NC	Internal Medicine Physician	$343.2K	$0
Rajesh Khurana	NC	Family Medicine Physician	$220.7K	$60.4K
Seth Six	AZ	Nurse Practitioner	$269.4K	$0
Shyamal Palit	NC	Nephrology Physician	$195.5K	$0
Lokesh Kebbehundi Marigowda	NC	Internal Medicine Physician	$164.5K	$0
Raju Raval	NC	Internal Medicine Physician	$147.7K	$0
Mohammed Hannan	NC	Internal Medicine Physician	$140K	$0
Abu Salahuddin	NC	Internal Medicine Physician	$127.5K	$0

Donovan Grierson — Billing Profile & Reimbursement Data

Sign up for Donovan Grierson — Billing Profile & Reimbursement Data policy alerts

Donovan Grierson — Billing Profile & Reimbursement Data

Sign up for Donovan Grierson — Billing Profile & Reimbursement Data policy alerts

Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Frequently Asked Questions

References