Dr. Geffner is a practicing adult and pediatric endocrinologist who has worked for large medical groups across Southern California.
After obtaining his M.D. at Georgetown University School of Medicine he did his internship and subsequently his residency at the Cornell Cooperating Hospital House Staff Training Program in New York. He finished fellowships in endocrinology at the New York Hospital and UCLA-Wadsworth VA where he became Assistant Chief of Endocrinology before leaving for clinical practice. He continues to teach courses and was a member of the Committee on Scientific Integrity at UCLA where he is a full clinical professor. When his is not seeing patients he is teaching fellows, residents, and medical students at UCLA affiliated hospitals.
He is a member of several professional societies including the Endocrine Society, the American Association of Clinical Endocrinologists, and the American Thyroid Association. He has served on several national and local committees for several of these organizations. He is past President of the Los Angeles County Chapter of the American Diabetes Association and is an advisor to groups such as The American College of Medical Quality and the Rand Corp. He presently consults for the Medical Board of California of which he was a member, for Medicare, and for the Center for Health Dispute Resolution. He was a JACO surveyor for the California Department of Health Services and Institute for Medical Quality.
He is an invited speaker at national, professional, and community meetings and has served on the editorial advisory boards and review panels for several journals as well as publishing original articles in the fields of thyroid, diabetes, calcium, adrenal, sexual function, delivery of health care, and disease state management.
He is the co-chair of the Thyroid Disorders Educational Initiative and a speaker for the Diabetes Educational Initiative and several pharmaceutical companies.
Clinical Specialties & Interests
Endocrinology: General Endocrinology, Adrenal, Thyroid
Effect of Hydrochlorothiazide Upon Serum and Urinary Calcium in Patients with Hypoparathyroidism. Arata RO, Mautalen CA, Geffner D, Horwith M, Medicina
Patterns of Recovery of the Hypothalamic-Pituitary-Thyroid Axis in Patients Taken off Chronic Thyroid Therapy. Krugman LG, Hershman JM, Chopra IJ, Levin GA, Pekary A, Geffner DL, Chau Teco GN, J C!in Endocrin Metab
Hyperthyroidism. Causes, Etiology of Graves' Disease, Clinical Features, General Aspects of Treatment. Geffner DL, Hershman JM, J Pharm Ther
Patterns of Reverse T3 Monodeiodination in Hypothyroidism and Nonthyroidal Illness. Geola F, Chopra I, Geffner, DL, J Ciin Endocrin Metab
Serum Cortisol in Cushing's Syndrome After High and Low Dose Dexamethasone Suppression. Ashcraft MW, Van Herte AJ, Vener SL, Geffner DL, Ann Int Med
Symptom Rating Scale for Assessing Hyperthyroidism. Geffner, DL, Arch. Intern Med
International Encyclopedia of Pharmacology and Therapeutics. Chapter: Hyperthyroidism Page 169 - 192 Geffner DL, Hershman JM Editors: (Hershman, J.M. and Bray, G.Pergamon Press: Oxford
Sexual Medicine and Counselling in Office Practice. Chapter: Hormones and Endocrine Disorders. Page 43 - 70 Geffner DL Editors: Munjack, D.J. and Ozief, L.J.Little, Brown and Company, Boston
Propylthiouracil Blocks Extrathyroidal Conversion of Thyroxine to Triiodothyronine and Augments Thyrotropin Secretion. Geffner DL, Azukizawa M, Hershman, JM, Clin Res
Usefulness of the Measurement of Serum Cortisol (F) and Dehydroepiandrosterone (DHEA-S) in Diagnosis of Patients with Cushing's Syndrome. Ashcraft MW, Van Herle AS, Vener SL, Geffner DL, Endocrinology
Sodium lpodate in the Treatment of Hyperthyroidism. Sharp B, Reed AW, Tamagna E, Geffner, DL, Hershman, JM, Clin Res
Preoperative Localization of Parathyroid Adenomas by Technetium-Thallium and Ultrasound Imaging. Coyle J, Winston MA, Gordon HE, Blahd WH, Geffner DL, Ituarte, EA, Hahn TJ, Coburn J, Clin Nuclear Med
Atenolol Controls the features of Hyperthyroidism Without Reducing T3 Levels. Sladek J, Geffner DL, Smith V, Hershman JM, Clin Res
Measurements of Urinary Excretion of Thyronine (TO) by Immunoassay: A Possible Means to Differentiate Euthyroid Sick Syndrome from Hypothyroidism. Chopra IJ, Boado RJ, Geffner DL, Solomon, DH, Endocrinology
Effect on Quality of Life: The Role of Diabetic Therapy. Geffner DL, Holvey SH, Ware, JE Jr, S Med Assoc 83d Scientific Assembly Wash, D.C
Diabetes Care in HMOs. Financing the Care of Diabetes Mellitus in the 1990s. Geffner DL, Second National Conference. Wash., D.C
The Role of Diabetic Therapy on Quality of Life. Geffner DL, Holvey SH, Ware JE Jr, Amer Coll Physicians, 71st Annual Session. Chicago, IL
Effect on Quality of Life: The Role of Diabetic Therapy. Geffner DL, Holvey SH, Ware JEJr, 18th Annual Physicians Assistants Conf. New Orleans, LA
Evaluation of First Generation Sulfonylureas and Glipizide in Non-Insulin-Dependent Diabetes Mellitus. Beisswenger PJ, Dias N, Beckman F, Amer J Med
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