• Appointments | Patient Portal and Bill Pay


Northwest Allied PG - Primary & Specialty Care (NEW)
  • Quick Links
    • For Patients
      • For Patients

        • Patients & Visitors
        • Accepted Insurance
        • All Appointments
        • Coordinated Care
        • Patient Portal and Bill Pay
        • Medicare Helpline
        • New Patient Information
        • Patient Portal FAQ
        • Prescription Refills
        • Primary Care Appointments
        • Telehealth Info
          • Services
            • Services

              • View All Services
              • Bariatric Surgery
              • Breast Surgery
              • Cardiology
              • Endocrinology
              • Family Medicine
              • Gastroenterology
              • General Surgery
              • Internal Medicine
              • Neurosurgery
              • OB/GYN
              • Orthopedics
              • Pediatrics
              • Pulmonology
              • Sports Medicine
              • Walk-In/Urgent Care
              • Urogynecology
              • Urology
                • Providers
                • Locations
                • About
                  • About

                    • About Us
                    • Affiliations
                    • Awards
                    • Organized Health Care Arrangement Status
                      • Contact
                      • Appointments
                      • Patient Portal and Bill Pay
                      • Careers
                      Home/Services/Gastroenterology/Provider Prep Instructions
                      eNewsletter Redirect
                      Notice of Non-Discrimination
                      About Us
                      Contact Us
                      End of Year Deductible
                      For Patients
                      Locations
                      Providers
                      Services
                      Bariatric Surgery
                      Breast Surgery
                      Cardiology
                      Angioplasty
                      Angioplasty with Stenting
                      Catheter Ablation
                      Diagnostic Sleep Study
                      Dobutamine Stress Echocardiogram
                      Echocardiogram (ECG)
                      Electrocardiogram
                      Electrophysiology Study
                      Exercise Stress Echocardiogram
                      Exercise Stress Test
                      Implantable Cardioverter Defibrillator
                      Nuclear Chemical Stress Test
                      Nuclear Exercise Stress Test
                      TAVR
                      Therapeutic Sleep Study
                      Tilt Test
                      Transesophageal Echocardiogram (TEE)
                      Structural Heart
                      Endocrinology
                      Family Medicine
                      Gastroenterology
                      Celiac Disease
                      Colonoscopy
                      Diverticular Disease
                      Gallstones
                      Heartburn and GERD
                      Inflammatory Bowel Disease
                      Irritable Bowel Syndrome
                      Provider Prep Instructions
                      General Surgery
                      Internal Medicine
                      Neurosurgery
                      OB/GYN
                      Orthopedics
                      Pediatrics
                      Pulmonology
                      Sports Medicine
                      Walk-In/Urgent Care
                      Urogynecology
                      Urology
                      PPS - Webpages

                      Provider Prep Instructions


                      Dr. Dodman's Prep Instructions

                      • Preparing for Your Colonoscopy

                      Dr. Iftikhar's Prep Instructions

                      • Endoscopy Preparation
                      • 2-Day Preparation - Suprep
                      • 2-Day Preparation - GoLytely or NuLytely
                      • Flexible Sigmoidoscopy Prep
                      • Miralax Colon Prep
                      • Miralax Colon Prep - Spanish

                      Dr. Lin's Prep Instructions

                      • Halflytely Split Dose Preparation
                      • Oral Electrolyte Split Dose Preparation
                      • Suprep Split Dose Preparation

                      Dr. Mizyed's Prep Instructions

                      • Oral Electrolyte Split Dose Preparation
                      • Suprep Split Dose Preparation
                      • Understanding Colonoscopy

                      Chouhan, Vijit, M.D.
                      Vijit Chouhan, M.D.
                      Gastroenterology
                      (520) 258-0571
                      Northwest Gastroenterology at Houghton
                      2300 S. Houghton Rd.
                      , Suite 160
                      Tucson 85748
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Dodman, Michele, D.O., FACOI, MBA
                      Michele Dodman, D.O., FACOI, MBA
                      Gastroenterology
                      (520) 901-6336
                      Northwest Gastroenterology at Oro Valley
                      1521 E. Tangerine Rd.
                      , Suite 123
                      Oro Valley 85755
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Iftikhar, Rehan, M.D.
                      Rehan Iftikhar, M.D.
                      Gastroenterology
                      (520) 624-4342
                      Northwest Gastroenterology at Grant Rd.
                      1951 W. Grant Rd.
                      , Suite 160
                      Sahuarita, Tucson 85745
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Lal, Pooja, M.D.
                      Pooja Lal, M.D.
                      Gastroenterology
                      (520) 258-0571
                      Northwest Gastroenterology at Houghton
                      2300 S. Houghton Rd.
                      , Suite 160
                      Tucson 85748
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Lin, Mark, M.D. (ARCHIVE 6/25)
                      Mark Lin, M.D.
                      Gastroenterology
                      (520) 901-6336
                      Northwest Gastroenterology at Oro Valley
                      1521 E. Tangerine Rd.
                      , Suite 123
                      Oro Valley 85755
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Mizyed, Ibraheem, M.D.
                      Ibraheem Mizyed, M.D.
                      Gastroenterology
                      (520) 219-8342
                      Northwest Gastroenterology at Tucson
                      1871 W. Orange Grove Rd.
                      , Suite 101
                      Tucson 85704
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Pullen, Sandra, FNP-C
                      Sandra Pullen, FNP-C
                      Gastroenterology
                      (520) 219-8342
                      Northwest Gastroenterology at Tucson
                      1871 W. Orange Grove Rd.
                      , Suite 101
                      Tucson 85704
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Shekleton, John, M.D.
                      John Shekleton, M.D.
                      Gastroenterology
                      (520) 219-8342
                      Northwest Gastroenterology at Tucson
                      1871 W. Orange Grove Rd.
                      , Suite 101
                      Tucson 85704
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment
                      Crumbie, Narzahni, APRN, FNP-BC
                      Narzahni Crumbie, APRN, FNP-BC
                      Gastroenterology
                      (520) 901-6336
                      Northwest Gastroenterology at Oro Valley
                      1521 E. Tangerine Rd.
                      , Suite 123
                      Oro Valley 85755
                      Telehealth Available
                      Call Office for Details
                      Request An Appointment

                      Northwest Primary & Specialty Care

                      • ADA Accessibility Policy
                      • Notice of Privacy Practices
                      • Privacy Policy
                      • Change Your Privacy Choices
                      • Terms & Conditions

                      Copyright ©2025. All rights reserved.

                      A medical group of AllianceHealth Oklahoma®

                      Services

                      • Bariatric Surgery
                      • Breast Surgery
                      • Cardiology
                      • Endocrinology
                      • Family Medicine
                      • Gastroenterology
                      • General Surgery
                      • Internal Medicine
                      • Neurosurgery
                      • OB/GYN
                      • Orthopedics
                      • Pediatrics
                      • Pulmonology
                      • Sports Medicine
                      • Walk-In/Urgent Care
                      • Urogynecology
                      • Urology

                      For Patients

                      • Accepted Insurance
                      • All Appointments
                      • Coordinated Care
                      • Patient Portal and Bill Pay
                      • Medicare Helpline
                      • New Patient Information
                      • Patient Portal FAQ
                      • Prescription Refills
                      • Primary Care Appointments
                      • Telehealth Info

                      About

                      • Affiliations
                      • Awards
                      • Organized Health Care Arrangement Status

                      Notice of Nondiscrimination
                      • English,
                      • አማርኛ,
                      • العربية,
                      • বাংলা,
                      • ျမန္မာဘာသာ,
                      • tsalagi gawonihisdi,
                      • 繁體中文,
                      • Chahta,
                      • Oroomiffa,
                      • Nederlands,
                      • Français,
                      • Kreyòl Ayisyen,
                      • Deutsch,
                      • ગુજરાતી,
                      • हिंदी,
                      • Hmoob,
                      • Igbo asusu,
                      • Ilokano,
                      • Italiano,
                      • 日本語,
                      • 한국어,
                      • Ɓàsɔ́ɔ̀‑wùɖù‑po‑nyɔ̀,
                      • ພາສາລາວ,
                      • Kajin Ṃajōḷ,
                      • ខ្មែរ,
                      • Diné Bizaad,
                      • नेपाली,
                      • Deitsch,
                      • فارسی,
                      • Polski,
                      • Português,
                      • ਪੰਜਾਬੀ,
                      • Română,
                      • Русский,
                      • Gagana fa'a Sāmoa,
                      • Srpsko‑hrvatski,
                      • Español,
                      • ܣܘܼܪܸܬ݂,
                      • Tagalog,
                      • ภาษาไทย,
                      • Türkçe,
                      • Українська,
                      • اُردُو,
                      • Tiếng Việt,
                      • èdè Yorùbá,
                      • עִברִית
                      Primary Care Appointments:
                      888-SAME-DAY
                      Loading... Loading...