Medical Credentialing Professionals

Tigges and Associates, established in 1997 by Cathy Tigges, offers comprehensive physician credentialing services.

Tigges & Associates, Inc. is a leader in Medical Credentialing, provider applications, enrollment forms, verification services, and other medical credential services, with its administrative office located in Phoenix, Arizona.

Tigges & Associates, Inc. processes and files documents for Hospital Privileging, Government Enrollments, Health Plan Paneling, State Applications, CAQH and Expirable Licenses to help new and existing individual providers, practitioners, allied professionals, medical groups, rehab centers, surgical centers and clinics to increase their productivity and profitability.

Our clients benefit from the diversity of our staff's experience and extensive knowledge of the credentialing industry, including Medical Staff Services, Managed Care Organizations and Health Plan enrollment processing. By utilizing Tigges & Associates, Inc. for your application needs, you are accessing highly qualified professionals. Tigges & Associates, Inc. brings a track record of outstanding customer service, superior quality standards and a unique approach to serve the diverse needs of our clients.

In addition to standard medical credentialing we specialize in physician assistant, nurse practitioner, allied health, behavioral, psychology, occupational, speech, physical therapists and social service, as well as Medicare and Medicaid/MediCal credentialing.  We specialize in providing primary source verification services for medical, behavioral and rehabilitation provider networks, MCO's, HMO's, IPA's PPO's hospitals, clinics and surgical centers

Tigges & Associates, Inc. credentials providers in accordance with the current standards set forth by National Committee for Quality Assurance (NCQA), Joint Commission on Accreditation of Healthcare Organization (JCAHO), and Utilization Review Accreditation Commission (URAC). We fulfill initial credentialing and re-credentialing verification requirements. Our compliant solutions are customizable to meet your specific needs.

Tigges & Associates, Inc. verifies all healthcare providers, including physicians, dentists, pharmacists, acupuncturists, social works, chiropractors and many others.

About Us


Cathy began her career in 1974 managing several practices, including acting as Clinic Manager for a 40 Physician Multi-specialty Clinic with 200 employees working under her supervision. She has experience in capitated and mixed managed care environments, policy and procedure development, billing procedures, credentialing and contract negotiations. Ms. Tigges has been involved in the development of practices, including single and multiple specialty, urgent care centers and dental facilities. She has served on several educational advisory boards which included Phoenix College, Rio Salado and Good Samaritan Hospital’s physician continuing education board.

Cathy retired from practice administration in 1997 to establish her own company, Tigges & Associates, Inc. Tigges & Associates has assisted several medical practices from practice start-ups to providing billing, credentialing and bookkeeping services.

In 2007, Tigges & Associates made the decision to devote their time to credentialing services only. This allows the company to narrow their focus and become the experts on Physician Credentialing in the Phoenix Metropolitan Area.

About Us - LoriLORI DURFEE

Lori began her career in 1989 and has worked practically every position in a medical practice, from patient intake to billing. After her first few years of working all areas in a medical practice, she began her management career and joined Tigges and Associates in 1999. Lori’s original focus with the company was billing, credentialing and practice management. She maintains some original  billing/practice management clients, but plans to transition away from those duties to devote 100 percent of her time to credentialing services exclusively.


Andrea began her credentialing career in 2005 after making the switch from medical records to medical staff services. She has continued to explore the credentialing process for hospitals, CVO’s and private practices. After several years, Andrea decided that by credentialing independently she is better able to serve the needs of each individual practice and help organize their credentialing files.  Andrea has recently completed her bachelor’s degree in Public Health through Northern Arizona University.


Credentialing for Medical Providers


Let Tigges & Associates take the stacks of paperwork out of your hands and into the hospitals and insurance plans.

We have over 18 years of experience handling credentialing needs for multiple clients in various practice settings and specialties in the greater Phoenix Metropolitan area.

Our clients are well established, successful group practices that understand the value in having a professional agent handle their credentialing.

Let us save you MONEY and time.

We have the knowledge, contacts and experience here in the valley of the sun to make sure your credentialing is handled the way it should be.

We offer the following medical credentialing services to meet the needs of medical providers.

  • Medical, Pharmacy and Dental Credentialing
  • Medical Groups, Outpatient Surgical and Clinic Credentialing
  • Physician Assistance, Nurse Practitioner Credentialing
  • Behavioral Health, Psychiatrists, Psychologists and Marriage & Family Therapists
  • Physical, Speech, Occupational and Social Workers Credentialing
  • Fellowship, Resident and Graduate program Credentialing
  • Health Plan Paneling Credentialing
  • Workers Compensation Credentialing

Contact Us

Cathy Tigges, CTACC
Lori Durfee
Andrea Griffin

Phone:  602-926-1696
Fax:  602-926-1697

General Email:

We are located in Phoenix, AZ  USA