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Internal Medicine in Prescott, AZ - Find a Doctor | Banner Health logo

Internal Medicine in Prescott, AZ - Find a Doctor | Banner Health

Internal MedicinePrescott, AZ

★★★★★4.7/575 reviews across 3 platforms

Ratings by platform

  • Banner Health doctor search (Internal Medicine near Prescott, AZ): 4.6 (131 ratings); 4.8 (1850 ratings); 4.9 (1887 ratings) (131; 1850; 1887 (ratings shown on Banner Health page))
  • Vitals (Dr. Doreen A. Slabaugh): 4.6 out of 5 (35 ratings (with 26 written reviews))
  • Healthgrades (Dr. Nicolas Giuliano): 5.0 out of 5 (21 reviews)
  • WebMD (Dr. Allen Gardner): 4.5 out of 5 (19 ratings)

What patients say

Patients praise

  • Providers described as listening to concerns and not rushing appointments (example reviews for Dr. Giuliano and Dr. Slabaugh)
  • Clear explanations of conditions/treatments and thorough follow-up (example reviews for Dr. Giuliano and Dr. Slabaugh; WebMD perspective for Dr. Gardner)

Common complaints

  • Billing and insurance/administrative issues reported for Banner Health (BBB complaints; Yelp; PissedConsumer)
  • Slow processing and prolonged resolution times mentioned in complaints
  • Some negative experiences in reviews related to perceived poor examination/communication in specific cases (from third-party review sites)

In patients' words

"“Dr. Guilliano was excellent! He was patient, listened to my concerns & then discussed my options.”"

Healthgrades review excerpt for Dr. Nicolas Giuliano, DO

"“Felt provider genuinely cared about me and my concerns/health. Did not feel rushed as she spent ample quality time with me.”"

Vitals review excerpt for Dr. Doreen Slabaugh, DO

"“Went to a doctor visit… the clinic did not provided my insurance correctly… and are trying to bill me for the insurance part too… Everything moves so slow and takes literally weeks…”"

BBB complaint excerpt for Banner Health

"“Not bad medical care - but completely incompetent billing group.”"

Yelp review excerpt for Banner Health System

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 10, 2026 — sources: [1][2][3][4][5][6][7][8].

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