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Compare the published Medicare service mix of Casandra Ray Hamlin, AGNP-BC with clinicians in the same registry specialty: Nurse Practitioner (CMS).

AZ · Exact areaEdit location

2024 published service data · 62 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Fatima Cabal Tagle, NP

Nurse Practitioner (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
84%Service-mix similarityView profile →

Charla Johansen, NURSE PRACTITIONER

Specialty details in registry · Sedona, AZ

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)
73%Service-mix similarityView profile →

Christina A Gettens, DNP, AGNP-C

Nurse Practitioner (CMS) · Prescott, AZ

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
62%Service-mix similarityView profile →

Christine Valenta, A/GNP

Nurse Practitioner (CMS) · Tucson, AZ

Shared published services
2 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)
51%Service-mix similarityView profile →

Ampili Umayamma, NP

Nurse Practitioner (CMS) · Mesa, AZ

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)
50%Service-mix similarityView profile →

Mari Michelle Hooper, NP

Nurse Practitioner (CMS) · Mesa, AZ

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)
50%Service-mix similarityView profile →

Marlyce E Parker, APN

Nurse Practitioner (CMS) · Bullhead City, AZ

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)
49%Service-mix similarityView profile →

Sue Freeman, N.P.

Nurse Practitioner (CMS) · Sun City West, AZ

Shared published services
1 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
47%Service-mix similarityView profile →

Cathryn Griepentrog

Nurse Practitioner (CMS) · Mesa, AZ

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)
  • Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)
41%Service-mix similarityView profile →

Carrie Jean Peterson, DNP

Nurse Practitioner (CMS) · Phoenix, AZ

Shared published services
1 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)
41%Service-mix similarityView profile →

Sara Buck Geisinger, DNP, AGNP-C

Nurse Practitioner (CMS) · Phoenix, AZ

Shared published services
1 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)
41%Service-mix similarityView profile →

Brooke Renae Grooters, NP

Specialty details in registry · Phoenix, AZ

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)
41%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.