1996-present: Head of Exotic Pet Services, Island Exotic Veterinary Care, Huntington, New York

1990-1999: Staff Clinician, Dept. of Exotic Pets, The Animal Medical Center, New York, NY

1994-1996; 1998-1999: Avian and Exotic Pet Consultant, Antech Diagnostic Laboratory, Farmingdale, New York

1990-1991: Consulting Veterinarian, Central Park Children’s Zoo, New York, New York

1988-1989: Adoption Clinic Veterinarian, North Shore Animal League, Port Washington, New York

Hoefer HL: Transfusions in exotic species. In Hohenhaus, AE (Ed); Problems in Veterinary Medicine, Transfusion Medicine, J.B. Lippincott Co., Philadelphia, 1992.

Hoefer HL: Antimicrobials in pet birds. In Bonagura JD, Kirk RW (Ed): Current Veterinary Therapy XIII. WB Saunders, Philadelphia, 1995.

Hoefer HL, editor and reviewer: Practical Avian Medicine, The Compendium Collection. Veterinary Learning Systems, Trenton, New Jersey, 1997.

Hoefer HL: Gastrointestinal disease of ferrets. In Hillyer EV, and Quesenberry KE (Eds): Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery. Philadelphia, WB Saunders, 1997.

Stefanacci JD, Hoefer HL: Small mammal radiology. In Hillyer EV, and Quesenberry KE (Eds): Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery. Philadelphia, WB Saunders, 1997.

Hoefer HL: Avian gastrointestinal disease. In Altman, Clubb, Dorrestein, Quesenberry (eds.): Avian Medicine and Surgery, WB Saunders, Philadelphia, 1997.

Hoefer HL: Heart disease in ferrets. In Bonagura JD, Kirk RW (Ed): Current Veterinary Therapy XIII. WB Saunders, Philadelphia, 1999.

Hoefer HL: Rabbit and ferret renal disease diagnosis. In Fudge AM (Ed): Laboratory Medicine: Avian and Exotic Pets. WB Saunders, Philadelphia, 2000.

Simone-Freilicher E, Hoefer HL: Care of the African Pygmy Hedgehog. Veterinary Clinics of North America Exotic Animal Practice.WB Saunders, Philadelphia, in press.

Hoefer HL: Gastrointestinal disease of ferrets. In Quesenberry KE, Carpenter JW (Eds): Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery. Philadelphia, WB Saunders, in press.

Stefanacci JD, Hoefer HL: Small mammal radiology. In Quesenberry KE, Carpenter JW (Eds): Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery. Philadelphia, WB Saunders, in press.

Hillyer EV, Moroff SD, Hoefer HL, Quesenberry KE: Bile duct carcinoma in two out of ten Amazon parrots with cloacal papillomas. J Assoc Avian Vet 5(2):91-95, 1991.

Hoefer HL: Transfusions in exotic species. Probl Vet Med 4(4):625-35, 1992.

Hoefer HL, Patnaik AK, Lewis AD: Pancreatic adenocarcinoma with metastasis in two ferrets. J Am Vet Med Assoc 201(3):466-7, 1992.

Hoefer HL: Hepatic fibrosis and colchicine therapy. J Assoc Avian Vet 5:193, 1992.

Bauck L, Hoefer HL: Avian antimicrobial therapy. Semin Avian Exotic Pet Med 2(1):17-22, 1993.

Hoefer HL: Chinchillas. Vet Clin North Am Small Anim Pract 24(1):103-11, 1994.

Hoefer HL: Hedgehogs. Vet Clin North Am Small Anim Pract 24(1):113-20, 1994.

Hoefer HL: Bile acid testing in psittacine birds. Semin Avian Exotic Pet Med 3(1):33-39, 1994.

Rosenthal K, Hoefer H, Quesenberry K, Brown S, Hillyer E, Jenkins J, Mader D: Question cause of hypercalcemia in a rabbit [letter; comment]. J Am Vet Med Assoc 206(11):1675-7, 1995.

Caplan ER, Peterson ME, Mullen HS, Quesenberry KE, Rosenthal KL, Hoefer HL, Moroff SD: Diagnosis and treatment of insulin-secreting pancreatic islet cell tumors in ferrets: 57 cases (1986-1994). J Am Vet Med Assoc 209(10):1741-5, 1996.

Kiehn TE, Hoefer H, Bottger EC, Ross R, Wong M, Edwards F, Antinoff N, Armstrong D: Mycobacterium genavense infections in pet animals. J Clin Microbiol 34(7):1840-2, 1996.

Antinoff N, Hoefer HL, Rosenthal KL, Bartick TE: Smooth muscle neoplasia of suspected oviductal origin in the cloaca of a Blue-Fronted Amazon parrot (Amazona aestiva). J Avian Med Surg 11(4): 268-272, 1997.

Hess L, Bartick T, Hoefer H: Clostridium tertium infection in a Moluccan cockatoo (Cacatua moluccensis) with megacolon. J Avian Med Surg 12(1):30-35, 1998.

Washko RM, Hoefer H, Kiehn TE, Armstrong D, Dorsinville G, Frieden TR: Mycobacterium tuberculosis infection in a green-winged macaw (Ara chloroptera): report with public health implications. J Clin Microbiol 36(4):1101-2, 1998.

Hoefer HL, Moroff S: The use of bile acids in the in the testing of hepatobiliary disease in the parrot. Scientific proceedings of the Annual Conference of Association of Avian Veterinarians, Chicago, IL, 1991.

Bauck L, Hillyer E, Hoefer H: Rhinitis: case reports. Scientific Proceedings Annual Conference, Association of Avian Veterinarians, 1992.

Hoefer HL: Common medical problems in pet birds. Proceedings Annual Exotics Conference, University of Wisconsin School of Veterinary Medicine, 1992.

Hoefer HL: Introduction to the avian patient; Common medical problems in pet birds; The ferret: diseases and clinical management; The rabbit: diseases and clinical management. Veterinarian Scientific Papers, 111th Annual Meeting of the Pennsylvania Veterinary Medical Association, Champion, PA, 1993.

Hoefer HL: Small mammal radiology; Guinea pig urolithiasis, Clinical approach to the chinchilla. Veterinary Proceedings, The North American Veterinary Conference, Orlando, Vol. 9, 1995.

Hoefer HL: Clinical management of the chinchilla and hedgehog. Proceedings of the 11th Annual Avian/Exotic Animal Medicine Symposium, University of California, Davis, 1996.

Rosenthal K, Stefanacci J, Quesenberry K, Hoefer H, Orcutt C: Ultrasonic findings in 30 cases of avian coelomic disease. Scientific Proceedings Annual Conference, Association of Avian Veterinarians, Philadelphia,PA, 1995.

Rosenthal K, Stefannaci J, Quesenberry K, Hoefer H: Computerized tomography in 10 cases of avian intracranial disease. Scientific Proceedings Annual Conference, Association of Avian Veterinarians, Philadelphia,PA, 1995.

Hoefer HL: Common conditions in the older ferret; Common diseases in the rabbit; Radiology of exotic pets. Conference Proceedings, Annual Meeting Ontario Veterinary Medical Association, Ottawa, 1996.

Hoefer HL, Liu SK, Kiehn TE, Friedan TR: Systemic Mycobacterium tuberculosis in a green-winged macaw. Scientific Proceedings Annual Conference, Association of Avian Veterinarians Tampa, 1996.

Antinoff N, Hoefer HL, Kiehn TE, Bottger EC: Mycobacteriosis caused by Mycobacterium genavense in a psittacine bird. Scientific Proceedings Annual Conference, Association of Avian Veterinarians Tampa, 1996

Hoefer HL: Tri-City Veterinary Medical Association, Avian and Exotic Pet Seminar, Erwin, Tennessee, 1996.

Hoefer HL: Gastric disorders in pet birds; Psittacine radiology. Scientific Proceedings 18th Annual Conference, Mid-Atlantic States Association of Avian Veterinarians, Clinton, MD, 1997

Hoefer HL: Fluid therapy in small mammals; Cardiac disease in ferrets. Scientific Proceedings, 9th Small Mammal Veterinary Conference, Baltimore, MD, 1997, pp 88-90; 108-113.

Hoefer HL: Update on ferret insulinoma; Update on ferret adrenal gland disease; Ferret neoplasia; Rabbit heart disease. Veterinary Proceedings, The North American Veterinary Conference, Volume 12, Orlando, 1998, pp 834-838.

Hoefer HL: Diagnosis and management of cardiac disease in ferrets; Diagnosis and management of diseases of the chinchilla; Avian gastric disorders. Scientific Proceedings, Annual Conference Midwest Exotic Pet Seminars, Chicago, IL, 1998.

Hoefer HL: Reproductive Disorders in Pet Birds; Rabbit and Rodent Radiology; Psittacine Radiology; Heart Disease in Ferrets; Feather Loss In Pet Birds; Basic Avian Clinical Pathology Testing; Endocrine Diseases of Ferrets; The Avian Clinical Exam; Clinical Approach to the Vomiting Bird; The Dyspneic Bird. Scientific Proceedings of the Atlantic Coast Veterinary Conference, Atlantic City, 1998.

Hoefer HL: Clinical approach to the African hedgehog; Common problems in guinea pigs; Diagnosis & management of chinchilla diseases. Veterinary Proceedings, The North American Veterinary Conference, Volume 13, Orlando, 1999.

Hoefer HL: Chinchillas and hedgehogs: the basics; Gastrointestinal diseases of small mammal herbivores; Critical care techniques in small mammals. University of Wisconsin Wildlife, Exotic and Zoo Animal Medicine Annual Conference, Madison, WI, 1999.

Hoefer HL: Richmond Academy of Veterinary Medicine, Exotic Pet Medicine Seminar, Richmond, Virginia, 1999.

Hoefer HL: Omaha Veterinary Medical Society, Topics in Small Mammal Medicine, Omaha Nebraska, 1999.

Hoefer HL: Ferret insulinoma; Diagnostic and treatment techniques in the ferret; Respiratory diseases in rabbits; Behavioral problems in small mammals. Veterinary Proceedings, The North American Veterinary Conference, Volume 14, Orlando, 2000.

Hoefer HL: Gastrointestinal disease of rabbits; Rabbit respiratory disease; Common problems in guinea pigs; Rodent radiology; Small mammal dentistry; Clinical techniques in ferrets; Endocrine diseases in ferrets; Clinical approach to the african pygmy hedgehog; Clinical approach to the chinchilla. Proceedings, Colorado State Veterinary Medical Association Convention 2000, Aspen, Colorado.

Hoefer HL: Basic handling and techniques in ferrets; Thoracic disease rule-outs in the ferret; EKG’s in ferrets; Rabbit thoracic disease rule-outs; dermatology in small mammals; Practice tips in hedgehogs. Veterinary Proceedings, The North American Veterinary Conference, Volume 15, Orlando, 2001.

Hoefer HL: Cloacal disease in psittacines; Use of the Gram’s stain in psittacine birds. Conference Proceedings Scientific Proceedings 22th Annual Conference, Mid-Atlantic States Association of Avian Veterinarians, Lancaster, Pennsylvania 2001.

Hoefer HL: Thoracic disease in ferrets; Small mammal dentistry, Gastrointestinal disease of rabbits, Clinical approach to the chinchilla, Endocrine diseases in ferrets, Clinical approach to the pet hedgehog; Clinical techniques in ferrets; Small mammal behavior; Small mammal radiology. Scientific Proceedings of the Atlantic Coast Veterinary Conference, Atlantic City, 2001.

Hoefer HL: Anatomy and physiology in avian respiratory disease; Common problems in guinea pigs; Common problems in small rodents; Adding small mammals to your practice. Veterinary Proceedings, The North American Veterinary Conference, Volume 16, Orlando, 2002

American Ferret Association

A Ferret Club, Long Island, NY

House Rabbit Society, New York and National Chapters

Long Island Herpetologic Society, New York

Long Island Parrot Society, New York

Parrot Fancier's Club