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Compare the published Medicare service mix of Holly Knudsen Varner, M.D. with clinicians in the same registry specialty: Neurology (CMS).

HOUSTON, TX · Exact areaEdit location

2024 published service data · 18 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Melissa S Thomas, M.D.

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Measurement of brain wave activity (eeg) outside the brain during surgery (95955)
73%Service-mix similarityView profile →

Samden Dorjee Lhatoo, MD

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Measurement of brain wave activity (eeg) outside the brain during surgery (95955)
45%Service-mix similarityView profile →

Kristin Brown, M.D.

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in arm or leg muscles, limited study (95885)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
39%Service-mix similarityView profile →

Parveen Athar, M.D.

Specialty details in registry · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Nerve conduction, 5-6 studies (95909)
34%Service-mix similarityView profile →

Thy Phuong Nguyen, M.D.

Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Needle measurement of electrical activity in arm or leg muscles, limited study (95885)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
29%Service-mix similarityView profile →

Rajesh Kumar Gupta, M.D.

Neurology (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
22%Service-mix similarityView profile →

Jay Gavvala, MD

Neurology (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
21%Service-mix similarityView profile →

Monika Ummat, M.D.

Neurology · Pediatric Medicine (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Needle measurement of electrical activity in arm or leg muscles, complete study (95886)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
20%Service-mix similarityView profile →

Nora Stella Vanegas Arroyave, M.D.

Neurology (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
18%Service-mix similarityView profile →

Sudha Sudhakar Tallavajhula, MBBS

Neurology (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
16%Service-mix similarityView profile →

Nuria Lacuey Lecumberri, MD

Neurology (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
8%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.