Geoffrey P. Colby, M.D., PH.D. / Similar service patterns A DIFFERENT WAY TO EXPLORE Similar work. Compare the published Medicare service mix of Geoffrey P. Colby, M.D., PH.D. with clinicians in the same registry specialty: Neurosurgery (CMS).
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2024 published service data · 44 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Diagnostic Radiology · Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213) Imaging of blood vessel (75898) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215) New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215) New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215) New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205) Interventional Radiology · Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 shared services · view billing descriptions Ultrasonic guidance for blood vessel access (76937) Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213) Imaging of blood vessel (75898) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Ultrasonic guidance for blood vessel access (76937) Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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 a high level of medical decision making, if using time, 60 minutes or more (99205) Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215) New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205) Specialty details in registry · Los Angeles, CA
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) Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213) Neurosurgery (CMS) · Los Angeles, CA
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 moderate level of medical decision making, if using time, 45 minutes or more (99204) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) 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 moderate level of medical decision making, if using time, 45 minutes or more (99204) Neurosurgery (CMS) · Los Angeles, CA
Shared published services 3 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) Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215) New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205) 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.