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Compare the published Medicare service mix of Nicholas Robert Langan, M.D. with clinicians in the same registry specialty: Surgery.

LANCASTER, SC · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Alex R. Espinal, M.D.

Surgery · Rock Hill, SC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Repair of groin hernia using an endoscope (49650)
81%Service-mix similarity~23.9 milesView profile →

David Jamaar Rice, MD

Surgery · Monroe, NC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
68%Service-mix similarity~14.9 milesView profile →

Kristin Renee Williams, MD

Surgery · Monroe, NC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
65%Service-mix similarity~14.9 milesView profile →

Manthan Dipak Makadia, M.D.

Surgery · Rock Hill, SC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
64%Service-mix similarity~23.9 milesView profile →

Shamly Venus Dhiman, M.D.

Surgery · Rock Hill, SC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
62%Service-mix similarity~23.9 milesView profile →

Tiv Ashanti Johnson, MD

Surgery · Monroe, NC

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
45%Service-mix similarity~14.9 milesView profile →

Lance E. Diehl, MD

Surgery · Monroe, NC

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
44%Service-mix similarity~14.9 milesView profile →

Obinna Nnaemeka Eruchalu, MD

Surgery · Monroe, NC

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
32%Service-mix similarity~14.9 milesView profile →

Talitha Brown, MD

Surgery · Monroe, NC

Shared published services
1 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)
27%Service-mix similarity~14.9 milesView profile →

Carrie Dawn Watson, D.O.

Surgery · Rock Hill, SC

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
23%Service-mix similarity~23.9 milesView profile →

Lewis Garrett Dickinson, MD

Surgery · Rock Hill, SC

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Removal of gallbladder using an endoscope (47562)
23%Service-mix similarity~23.9 milesView profile →

Gerhardt Julius Winkel, MD

Surgery · Monroe, NC

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
19%Service-mix similarity~14.9 milesView 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 approximate distance 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.