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

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

Gemma Sto Nino (NPI 1992204580)

Field	Value
Entity Type	Individual
Organization	Gemma Sto Nino
Address	388 Ypao Rd
City	Tamuning
State	GU
ZIP	96913
Taxonomy	Family Nurse Practitioner
NPI Enumerated	February 8, 2018

Payer Source	Total Paid
Medicare	$30.4K
Medicaid	$0

Key Findings

This provider is effectively a single-payer Medicare practice: lifetime Medicare revenue is $30.4K while there is no Medicaid billing on file, indicating GEMMA STO NINO relies entirely on Medicare fee-for-service activity in the recorded dataset rather than a mixed Medicaid/Medicare panel. The absence of Medicaid claims suggests limited engagement with state-funded programs or billing under a different NPI/entity for Medicaid services.

Revenue concentration in Medicare is high — the precomputed top three Medicare codes account for 70.6% of this provider's total Medicare revenue. Those top codes are 99214 ($9.2K, 30.0%), 99213 ($9K, 29.5%), and G0439 ($3.4K, 11.1%), which together indicate most Medicare dollars flow through office evaluation-and-management visits and annual wellness visits.

The code mix (dominant use of 99214 and 99213 plus G0439) indicates a primary care/longitudinal outpatient practice profile: the provider is billing moderate- and low-level established patient E/M visits and annual wellness visits, supported by routine preventive services rather than procedure-driven specialties. Ancillary services billed (screening mammography 77067 and a range of common labs such as 80061, 82306, 80053, and 83036) further support a general primary-care scope with in-office management of chronic disease and preventive screening.

Competitive standing on core E/M codes is modest to typical nationally: 99214 ranks #220189 of 479517 providers (54th percentile) and 99213 ranks #114854 of 457151 providers (75th percentile), which together signal unremarkable, middle-of-market volume for these visits rather than a high-volume primary care hub. G0439 (annual wellness visit) sits lower at the 26th percentile (rank #77690 of 105855), suggesting fewer AWV visits relative to national peers.

Practice tenure is established but relatively recent compared with long-career clinicians: the NPI was enumerated on 2018-02-08 (about 8 years ago). Combined with the Medicare revenue scale ($30.4K lifetime), this implies a small-volume Medicare panel or part-time billing under this NPI over that period rather than decades of high-volume Medicare practice.

Service-level activity shows routine preventive and chronic care monitoring: screening mammography (77067) and influenza vaccine administration (G0008, 90688) appear among billed services alongside common lab testing (80061 lipid panel; 83036 A1C; 82043 urine albumin; 36415/85025/80053 panels). This mix aligns with running a primary care clinic focused on annual wellness/prevention and laboratory-supported chronic disease management rather than procedural specialties.

Several lab and routine test codes fall in typical percentiles nationally (for example 80061 at the 48th percentile, 36415 at the 56th percentile, and 83036 at the 58th percentile), indicating this provider orders standard volumes of diagnostics consistent with typical primary-care follow-up rather than unusually high or low utilization. At the same time, screening mammography (77067) ranks at the 6th percentile, which could reflect limited direct provision of imaging services or that mammography is largely referred out in this market.

Medicare: Complete Services Breakdown

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

20 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…	120	$80	$9.2K
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…	170	$50	$9K
G0439	Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	30	$120	$3.4K
77067	The provider takes two X–ray views of each breast for routine screening and may use specially designed computer software to help identify any potential abnormalities within the images; the software…	20	$110	$1.8K
80061	The lab analyst performs a lipid panel test in which he measures the blood level of cholesterol and fats called triglycerides in the blood.	80	$10	$1.1K
82306	The lab analyst measures the vitamin D level, typically on a serum specimen. This analyte, commonly known as vitamin D, is not really a vitamin, but is an important steroid hormone that is produced…	40	$30	$1K
36415	In this procedure, the provider inserts a needle into a vein to collect a blood sample.	110	$10	$900
80053	The lab analyst performs a comprehensive metabolic panel, or CMP test in which he measures the blood level of 14 chemicals the code descriptor lists for the panel.	60	$10	$630
83036	Sugar in the bloodstream can get attached to the hemoglobin in red blood cells. Once the sugar is attached, it stays there for the lifetime of the red blood cell (around 120 days or over 3 months).…	60	$10	$630
G0444	Annual depression screening, 5 to 15 minutes	30	$20	$510

Showing 1–10 of 20

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 20 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Guam Distribution

Gemma Sto Nino — 0 of 20 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Guam

Full comparison — all codes billed, vs. state median

20 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
99214	50	90	140	$90	$25.7K
99213	31	100	100	$60	$10.6K
77067	9	10	20	$110	$9.4K
G0439	10	20	40	$130	$8.1K
G0008	25	40	30	$30	$2.1K
80061	5	10	80	$10	$1.9K
82306	3	10	40	$30	$1.8K
90688	19	30	30	$20	$1.4K
G0444	7	10	40	$20	$1.3K
36415	5	10	70	$10	$1.3K

Showing 1–10 of 20

Nearby Providers

Other providers in the same ZIP code as Gemma Sto Nino, ranked by combined Medicare and Medicaid revenue.

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Thomas Lee	GU	Dentist	$0	$10.9M
Guam Memorial Hospital	GU	General Acute Care Hospital	$0	$3.5M
Rsa - Tumon, LLC	GU	End-Stage Renal Disease (ESRD) Treatment Clinic/Center	$0	$2.9M
Robert Yang	GU	Dentist	$0	$2.4M
Antonio Garcia	GU	Pediatrics Physician	$0	$2.2M
Ma Gladys Linsangan	GU	Pediatrics Physician	$0	$2.2M
Ari Katerelos	GU	Radiation Oncology Physician	$2.1M	$0
Guam X-ray	GU	Vascular & Interventional Radiology Physician	$0	$2.1M
Sarah Clegg	GU	General Practice Dentistry	$0	$1.7M
Peter Kh Go	GU	Surgery Physician	$152.8K	$1.5M

Gemma Sto Nino — Billing Profile & Reimbursement Data

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Key Findings

Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Nearby Providers

Frequently Asked Questions

References