HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Katherine Macauley Ligtenberg Given, MD, PHD with clinicians in the same registry specialty: Dermatology.

SANTA ROSA, CA · Exact areaEdit location

2024 published service data · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jeffrey W Collins, D.O.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)
  • Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm (12052)
54%Service-mix similarityView profile →

Susan Chinn Amaturo, M.D.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)
  • Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm (12052)
50%Service-mix similarityView profile →

Henry Eric Degroot, MD

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
46%Service-mix similarityView profile →

Khanh Yen Truong, M.D.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
34%Service-mix similarityView profile →

Ligaya Francis Park, D.O.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm (11602)
30%Service-mix similarityView profile →

Julie Christine Plante, MD

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm (13121)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
28%Service-mix similarityView profile →

Judith Hong Groves, M.D.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm (11602)
26%Service-mix similarityView profile →

Brianne Zechlinski Dickey

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm (11602)
24%Service-mix similarityView profile →

Jennifer Freeman

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm (12032)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm (11602)
23%Service-mix similarityView profile →

Stephen D. Schwartz, M.D.

Dermatology · Santa Rosa, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of related skin growth, first growth (11102)
16%Service-mix similarityView profile →

Diana Santo Domingo, M.D.

Dermatology · Santa Rosa, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of related skin growth, first growth (11102)
14%Service-mix similarityView profile →

Jeffrey Louis Sugarman, M.D., PH.D.

Dermatology · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Application of ultraviolet light to skin (96900)
  • Biopsy of related skin growth, first growth (11102)
14%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.