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WALKER, JOANNAM.D. NPI 1245529320 Clinician

Micrographic Dermatologic Surgery · PROVIDENCE, RI

Specialty Micrographic Dermatologic Surgery — from billed Medicare claims
In practice about 15 years since medical school (class of 2011, self-reported to CMS)
Location PROVIDENCE, RI · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 34 codes billed · 2,771 disclosed volume (CY2024 — most recent year in data)
Current groups
Hospital affiliations
  • HOSPITAL OF UNIV OF PENNSYLVANIA · Hospital · CCN 390111
  • PENN PRESBYTERIAN MEDICAL CENTER · Hospital · CCN 390223
  • Home health agency — CCN 397125
registry affiliations from the CMS Doctors & Clinicians facility file — an administrative affiliation, not a statement about where care is delivered

Group affiliation since 2019

20192026
UNIVERSITY OF PENN - MEDICAL GROUP
2022–2026
BROWN DERMATOLOGY INC
2019–2020

The roster archive begins in 2019, so a span starting at 2019 may reach back further. Membership spans only — no volume is attributed to any group here.

NPPES registry · CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · NPPES record last updated 2018-06
Data year CY2024 CY2023 CY2022  CY2021  CY2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The billed-volume positioning, practice focus, and economics behind this provider — computed on the same disclosed Medicare Part B data.

This provider's disclosed submitted charges across all codes were in CY2024. Included with Platform.

  • Charge, service & beneficiary totals — the disclosed scale, all codes
  • Practice profile — focus & reach — top codes by share of services
  • Office vs. facility setting mix — place-of-service code split
  • Peer positioning — service volume — percentile among specialty peers, cohort & year disclosed
  • Peer positioning — code breadth — how many codes billed, vs peers

Peer positioning shows billed-volume and code-breadth positions among specialty peers, not measures of care (a provider's true volume position can only be higher, never lower). All figures disclosed Medicare Part B fee-for-service; volumes are personal to this NPI, not attributed to any group.

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Procedures billed to Medicare Part B (2024)

Medicare Part B FFS · CY2024 · as published by CMS
CodeDescription Volume Beneficiary-episodes Avg charge Avg Medicare payment
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
17003 Destruction of precancer skin growth, 2-14 growths
17315 Removal and microscopic exam of growth, each additional block after 5 tissue blocks
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks
11103 Biopsy of related skin growth, each additional growth
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
11102 Biopsy of related skin growth, first growth
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
13121 Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm
17000 Destruction of precancer skin growth, 1 growth
88342 Special stained specimen slides to examine tissue, initial procedure
88331 Pathology examination of specimen during surgery, first tissue block
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
13122 Complicated repair of wound of scalp, arms, or legs, each additional 5.0 cm or less
14301 Repair of wound by transferring skin, 30.1-60.0 sq cm
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm
96405 Administration of chemotherapy into growth, 1-7
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
17314 Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm
11900 Injection into skin growth, 1-7 growths

Showing the top 25 of 34 procedures this clinician billed. The full list is part of the premium platform. Notify me at launch →

These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.