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NPI 1245529320 · Providence, RI · Dermatology Physician
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Joanna Walker is a dermatology physician provider located in Providence, Rhode Island. This profile covers 27 Medicare and 2 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.
Provider details (source: NPPES NPI Registry)
| Field | Value |
|---|---|
| Entity Type | Individual |
| Organization | Joanna Walker |
| Address | 593 Eddy St |
| City | Providence |
| State | RI |
| ZIP | 02903 |
| Taxonomy | Dermatology Physician |
| NPI Enumerated | March 29, 2011 |
Lifetime revenue by payer source (source: CMS Medicare & Medicaid claims data)
| Payer Source | Total Paid |
|---|---|
| Medicare | $243.6K |
| Medicaid | $5.4K |
The provider’s Medicare billing is dominated by Mohs surgery: the top three Medicare codes are 17311, 17312, and 17313 and these three codes together account for 51.4% of the provider's total Medicare revenue. This concentration indicates a procedure-heavy dermatologic surgical practice with Mohs excision as the primary revenue driver rather than a purely clinic-based E/M practice.
Medicare scale and payer mix show Medicare is the primary payer for this provider: total Medicare revenue is $243.6K versus total Medicaid revenue of $5.4K, so Medicare accounts for the overwhelming share of billed revenue. Medicaid activity is minimal in dollar terms relative to Medicare, signaling the provider is effectively Medicare-focused.
Top-code contribution detail: single code 17311 generates $79K in Medicare revenue (32.5% of the provider's Medicare revenue), while 17312 and 17313 contribute $23.6K (9.7%) and $22.2K (9.2%) respectively. These specific code-level concentrations underscore the practice’s reliance on Mohs procedures for Medicare reimbursement.
Competitive standing on Mohs is mid-tier nationally: 17311 ranks #982 of 2969 providers (67th percentile, described as typical, unremarkable volume), 17312 ranks #1194 of 2770 (57th percentile, typical, unremarkable volume), and 17313 ranks #593 of 2300 (74th percentile, typical, unremarkable volume). In other words, the provider shows respectable Mohs volume relative to national peers but is not a dominant national outlier.
Medicaid billing is narrowly concentrated in office visits: the top Medicaid codes 99214 and 99213 together account for 100.0% of Medicaid revenue, with 99214 representing $3.2K (58.8% of Medicaid revenue) and 99213 $2.2K (41.2% of Medicaid revenue). Both Medicaid codes have low in-state rank positions (99214 ranks #1360 of 1731, 21th percentile; 99213 ranks #1724 of 2046, 15th percentile), indicating limited Medicaid surgical or procedure billing and that Medicaid engagement is primarily routine E/M visits.
Procedure mix indicates capability for reconstruction and complex repairs in addition to Mohs: meaningful Medicare revenue comes from codes such as 13132 ($15.8K, ranks #672 of 3088, 78th percentile), 13121 ($9.4K, ranks #650 of 3302, 80th percentile), and graft/rotation codes like 15260 ($8.4K, ranks #1144 of 1336, 7th percentile). The presence of higher-percentile repair codes alongside graft codes and flap/replacement codes suggests the practice performs post-excisional reconstruction and complex closures rather than only simple excisions.
Ancillary pathology support appears in the billing mix, consistent with intraoperative decision-making for surgical cases: codes 88331 ($2.1K, ranks #1792 of 4659, 60th percentile) and 88342 ($1.3K, ranks #8914 of 11370, 21th percentile) are billed, indicating use of pathology services and occasional special stains to support diagnoses during or after surgery. This complements the Mohs-heavy procedural profile and reflects integrated surgical-pathology workflow.
Tenure and stability: the provider’s NPI was enumerated on 2011-03-29 (~15 years ago), indicating an established presence in the market. Given the longevity and the concentration of procedural work in Mohs and reconstructive codes, the billing profile is consistent with a sustained surgical dermatology practice rather than a recently established clinic.
Medicare revenue breakdown by CPT/HCPCS procedure code.
View: Bar Chart1 / 2
The CPT/HCPCS codes generating the most Medicare revenue for this provider.
27 rows
| CPT/HCPCS Code | Description | Claims | Avg Paid | Revenue |
|---|---|---|---|---|
| 17311 | Mohs surgery is a multi–staged procedure that is performed to excise a malignant lesion layer by layer, along with histo–pathological assessment. The assessment is performed to ensure that the… | 350 | $230 | $79K |
| 17312 | Mohs surgery is a multi–staged method of excising a malignant lesion layer by layer, along with histo–pathological assessment, to ensure negative malignancy of the margins. | 150 | $160 | $23.6K |
| 17313 | Mohs surgery is a multi–staged method of excising a malignant lesion layer by layer, along with histo–pathological assessment, to ensure negative malignancy of the margins. | 100 | $220 | $22.2K |
| 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… | 260 | $80 | $19.6K |
| 13132 | The provider repairs a wound measuring 2.6 cm to 7.5 cm in size of the cheeks, chin, mouth, neck, axillae, genitalia, hands, and/or feet, which may require scar revision, debridement extensive… | 130 | $130 | $15.8K |
| 14301 | The provider replaces the lesions in any area with the healthy tissues from an adjacent site. This code represents a defect of 30.1 cm2 to 60.0 cm2. | 20 | $730 | $10.9K |
| 13121 | This is for a complex repair of a wound to the scalp, arms, and/or legs. This wound should be 2.6 to 7.5 cm in size. | 80 | $120 | $9.4K |
| 15260 | This code is for a free full–thickness skin graft of the nose, ears, eyelids, and/or lips that is 20 cm2 or less in size. | 10 | $700 | $8.4K |
| 14041 | The provider replaces the lesions in the forehead, cheeks, chin, mouth, neck, axillae or armpits, genitalia, hands, or feet with the healthy tissues from an adjacent site. This code represents a… | 10 | $610 | $7.9K |
| 14060 | The provider replaces the lesions in the eyelids, nose, ears, or lips, with the healthy tissues from an adjacent site. This code represents a defect of 10 cm2 or less. | 10 | $550 | $7.7K |
Showing 1–10 of 27
How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 27 CPT/HCPCS codes.
View: State1 / 2
Full comparison — all codes billed, vs. state median
27 rows
| CPT/HCPCS Code | Rank | Provider Count | Median Claims | Avg Paid | Average Revenue |
|---|---|---|---|---|---|
| 17311 | 5 | 10 | 310 | $440 | $137.5K |
| 17312 | 5 | 10 | 150 | $320 | $58.4K |
| 17313 | 5 | 10 | 100 | $440 | $46.4K |
| 13132 | 4 | 10 | 130 | $190 | $26.5K |
| 14301 | 5 | 10 | 30 | $790 | $22.1K |
| 14041 | 3 | 10 | 20 | $660 | $15.1K |
| 14060 | 7 | 10 | 20 | $570 | $13.1K |
| 15260 | 6 | 10 | 20 | $750 | $12.7K |
| 99214 | 338 | 1,950 | 100 | $80 | $11.7K |
| 13121 | 4 | 10 | 30 | $190 | $10.7K |
Showing 1–10 of 27
Medicaid revenue breakdown by year and by CPT/HCPCS procedure code, including monthly billing trends and the top codes driving revenue.
View: By Year1 / 3
Every CPT/HCPCS code this provider has billed to Medicaid, with claims volume, average payment, and total revenue.
2 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… | 40 | $80 | $3.2K |
| 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… | 30 | $70 | $2.2K |
How this provider's Medicaid billing volume and revenue compare to other Rhode Island providers billing the same CPT/HCPCS codes.
Full comparison — all codes billed, vs. Rhode Island median
2 rows
| CPT/HCPCS Code | Description | Rank | Provider Count | Median Claims | Avg Paid | Average 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… | 1,360 | 1,730 | 220 | $70 | $75.2K |
| 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… | 1,724 | 2,050 | 300 | $50 | $72.3K |
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