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Superior Gastrointestinal Pathology, Trusted Nationwide
Led by over a dozen fellowship-trained GI pathologists who understand the nuances of digestive disease diagnosis and advanced special staining techniques.
The Gold Standard in GI Pathology
Gastro Pathology Specialists (GPS) represents the pinnacle of gastrointestinal diagnostic excellence. Our team combines decades of specialized training with cutting-edge laboratory infrastructure to deliver unmatched precision in GI pathology.
Fellowship-Trained Experts
Over a dozen specialized GI pathologists with advanced training in mucosal pathology, inflammatory bowel disease, and neoplasia
Advanced Techniques
Comprehensive expertise in special stains and immunohistochemistry for even the most complex diagnostic challenges
Gold Standard Certification
State-of-the-art laboratory with CLIA certification ensuring the highest quality standards
Audit Ready Reports
Our comprehensive audit trail ensures every report meets medical necessity compliance.
Comprehensive Gastrointestinal Diagnostic Services
Core Pathology Services
  • Histopathology: Expert analysis of biopsies, resections, and polypectomies with meticulous attention to mucosal architecture
  • Special Stains & IHC: Complete panel including PAS, Alcian Blue, GMS, CDX2, MUC2, and Ki-67 for definitive diagnosis
Specialized Offerings
  • Consultative Reviews: Expert second opinions on challenging and complex GI cases from our fellowship-trained specialists
  • Digital Pathology: Secure online slide access and electronic reporting for seamless integration with your workflow
  • Rapid Turnaround: Standard 24-72 hour reporting with expedited options for urgent cases
Led by Experts in GI Pathology
Our distinguished team of fellowship-trained gastrointestinal pathologists brings unparalleled expertise to every case. Each pathologist completed rigorous specialized training beyond general pathology, focusing exclusively on the complexities of digestive system diseases.
Fellowship-Trained Specialists
Advanced training in GI pathology from leading academic institutions with focus on inflammatory bowel disease and neoplasia
Collaborative Approach
Multi-pathologist review process for complex cases ensures diagnostic accuracy and confidence in challenging scenarios
Academic Excellence
Active involvement in research, publications, and medical education advancing the field of gastrointestinal pathology
The GPS Lean Lab Advantage for Gastroenterology Practices
The APS Lean Lab model is engineered to address the core needs of modern gastroenterology practices: superior patient care and robust financial performance. By focusing on diagnostic excellence and streamlined operations, we offer a specialized solution that enhances clinical outcomes while ensuring maximum revenue potential.
Clinical Excellence & Accurate Diagnosis
Diagnostic accuracy is paramount in GI pathology. Unlike general pathology services, the APS Lean Lab model provides interpretation exclusively by specialized experts. This leads to:
  • Access to 11 dedicated, GI Fellowship-trained pathologists.
  • Faster, more reliable definitive diagnoses, resulting in up to a 100% increase in definitive diagnosis rates compared to general pathology labs.
  • Superior clinical collaboration and personalized attention, including personal calls for all cancer cases.
Optimized Revenue Stream
Achieve maximum profitability without the significant overhead and operational risk associated with traditional lab ownership. The Lean Lab model eliminates major lab ownership costs, including:
  • Elimination of costs associated with pathology reads.
  • No capital outlay or maintenance costs for IHC programs.
  • No burden of managing complex IT solutions and LIS systems.
Comprehensive Partnership Benefits
Specialized Expertise
Direct access to 11 GI Fellowship-trained pathologists ensures the highest level of diagnostic quality.
Personalized Cancer Case Reporting
Pathologists provide personal calls for all cancer cases, ensuring timely and empathetic communication.
Seamless Implementation
Complete transition documentation and support to ensure smooth integration into your existing practice workflow.
Regulatory Confidence
Full inspection and regulatory support, minimizing compliance risks and administrative burden.
Meet Our Fellowship-Trained GI Pathology Team
Our team consists exclusively of highly specialized pathologists, each possessing dedicated GI or Hepatobiliary fellowship training. This commitment to specialization ensures the highest level of diagnostic accuracy for your patients.
Nancy Davis, MD
Lead Hepatobiliary Pathologist
  • Specialization: Complex liver and biliary tract diagnostics.
  • Fellowship: Advanced Hepatobiliary Pathology Training.
  • Experience: Leading diagnostic protocols for challenging chronic liver disease cases.
Jennifer Do, MD
GI Pathologist
  • Specialization: Inflammatory bowel disease and colorectal cancer syndromes.
  • Fellowship: GI and Hepatic Pathology, University of Washington.
  • Experience: Dedicated educator and researcher in diagnostic GI techniques.
Theodore Chang, MD
GI Pathologist
  • Specialization: Advanced molecular diagnostics for GI malignancies.
  • Fellowship: GI Pathology, AmeriPath Digestive Disease Institute.
  • Experience: Extensive history in high-volume, precision pathology environments.
Amy Collinsworth, MD
GI Pathologist
  • Specialization: Non-neoplastic GI diseases and transplantation pathology.
  • Fellowship: GI and Hepatic Pathology, University of Florida.
  • Experience: Focus on correlating histological findings with clinical presentation in pediatric and adult cases.
Rosalyn Enos, MD, MBA
GI Pathologist
  • Specialization: Pancreaticobiliary pathology and operational efficiency.
  • Fellowship: GI, Hepatic, and Pancreaticobiliary Pathology, Weill Cornell.
  • Experience: Leverages clinical and business expertise to streamline laboratory quality and throughput.
Ayaz Ghani, MD
GI Pathologist
  • Specialization: Advanced immunostaining and correlation with endoscopy.
  • Fellowship: GI and Hepatic Pathology, University of Miami.
  • Experience: Recognized expertise in correlating subtle histological changes with complex clinical data.
Zheng Ping, MD
GI Pathologist
  • Specialization: Upper GI tract pathology, including Barrett's esophagus.
  • Fellowship: GI and Hepatic Pathology, University of Miami.
  • Experience: Strong research focus on precursor lesions and early detection of esophageal and gastric carcinoma.
Julianne Purdy, MD
GI Pathologist
  • Specialization: Infectious and viral liver pathology.
  • Fellowship: GI and Hepatic Pathology, University of Michigan.
  • Experience: Highly experienced in the diagnostic evaluation of chronic and acute viral hepatitis specimens.
Tiansheng Shen, MD, Ph.D
GI Pathologist & Oncologic Specialist
  • Specialization: Difficult GI cancer specimens and molecular interpretation.
  • Fellowship: Surgical Pathology, MD Anderson Cancer Center.
  • Experience: Dual training (MD/PhD) providing deep insight into oncogenesis and targeted therapeutic relevance.
Uday Shergill, MD
GI Pathologist
  • Specialization: Diagnostic standardization and quality assurance.
  • Fellowship: GI and Hepatic Pathology, University of Miami.
  • Experience: Leads initiatives to maintain consistency and excellence in diagnostic reporting across the practice network.
Christine Pesoli, MD
GI Pathologist
  • Specialization: Pancreatic and Hepatobiliary microscopic interpretation.
  • Fellowship: GI and Hepatobiliary Pathology, University of Alabama.
  • Experience: Noted for meticulous approach to small tissue samples crucial for pancreatic neoplasia diagnosis.
Your Partner in Gastrointestinal Diagnostics
GPS is designed to support physicians, gastroenterologists, and clinical partners with comprehensive diagnostic solutions that enhance patient care and streamline practice operations.
1
Effortless Specimen Submission
Streamlined collection kits and logistics with pre-paid shipping and dedicated courier options for maximum convenience
2
Actionable Reports
Customizable diagnostic reports with clear interpretations, clinical correlations, and treatment-relevant insights
3
Dedicated Support
Personal account management for clinics, ambulatory surgery centers, and gastroenterology groups with 24/7 pathologist consultation
4
Full Compliance
Complete adherence to CMS, CLIA, HIPAA, and state regulations with comprehensive documentation and audit support
5
Practice Growth Support
Marketing materials and co-branded resources to help partner practices communicate quality and expertise to patients
Trusted Quality, Proven Outcomes
Our commitment to excellence is reflected in measurable performance metrics that consistently exceed industry standards. Every case receives the meticulous attention and expertise that defines GPS.
1
Hour Turnaround
Rapid standard reporting ensures timely clinical decisions without compromising diagnostic accuracy
2
Diagnostic Concordance
Industry-leading accuracy rate validated through rigorous quality control and peer review processes
3
CLIA Compliance
Perfect regulatory adherence with zero deficiencies in federal and state laboratory inspections
4
Pathologist Access
Round-the-clock availability for urgent consultations and clinical discussions with our expert team
Our Mission: Excellence in GI Pathology
Gastro Pathology Specialists was founded by gastrointestinal specialists who recognized the critical need for dedicated, subspecialized diagnostic expertise in digestive diseases. Our mission is to advance the diagnosis and treatment of GI conditions through precision pathology, innovative technology, and collaborative partnerships.
Today, we serve hospitals, ambulatory surgery centers, and gastroenterology groups nationwide, providing the specialized knowledge and infrastructure that complex GI cases demand. We are committed to pushing the boundaries of diagnostic excellence through continuous innovation, research, and education.
Patient-Centered
Innovation-Driven
Collaboration-Focused
Partner with GPS Today
Experience the GPS difference. Whether you're submitting a complex case or exploring a long-term partnership, our team is ready to support your diagnostic needs with unmatched expertise and service.
Submit a Case
Ready to submit? Access our digital requisition form and specimen submission guidelines for fast, accurate processing.
Request Partnership
Interested in establishing a referral relationship? Schedule a consultation to discuss how GPS can support your practice.
Contact Information
Phone: Available for inquiries
Email: Contact our team
Fax: Secure transmission
Address: Laboratory location
Portal: 24/7 secure access
Support: Dedicated assistance
Your Trusted Partner in GI Pathology Excellence
Gastro Pathology Specialists combines fellowship-trained expertise, advanced technology, and unwavering commitment to quality. Together, we can elevate the standard of gastrointestinal diagnostics and improve patient outcomes.
CLIA Certified
HIPAA Compliant
© Gastro Pathology Specialists. All rights reserved. Committed to excellence in gastrointestinal pathology and diagnostic innovation.