Jacqueline Jonklaas, MD| MedStar Health
Jacqueline Jonklaas

Jacqueline Jonklaas, MD
Provider accepts MedStar Select insurance

4.9 out of 5 (480 reviews)

Specialties:

Languages:

(877) 485-1479

Clinical areas of focus

  • Adrenal Gland Disorders (E.G. CUSHING'S SYNDROME, PHEOCHROMOCYTOMA)
  • Adrenal Hormone Level Testing
  • Adrenal Venous Sampling
  • Cushing Syndrome
  • Enterectomy
  • Ganglion Cyst Excision
  • Hashimoto Thyroiditis
  • Hormone Replacement Therapy
  • Hyperparathyroidism
  • Thyroid Biopsy
  • Thyroid Cancer
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Conditions and procedures

Conditions I treat

  • Abnormal Function Study Results
  • Acquired Absence Of Organs
  • Adrenal Crisis
  • Adrenal Gland Disorder
  • Adrenal Gland Disorders (E.G. CUSHING'S SYNDROME, PHEOCHROMOCYTOMA)
  • Adrenal Mass
  • Adrenal Tumor
  • Bone Density Disorder
  • Bone Disorders
  • Breast Disorders
  • Cardiometabolic Disorders
  • Congenital Adrenal Hyperplasia
  • Cushing Syndrome
  • Diabetes In Pregnancy
  • Disorders Of Lipoprotein Metabolism And Lipidemias
  • Disorders Of Mineral Metabolism
  • Disorders Of Pancreatic Internal Secretion
  • Disorders Of Pituitary Gland
  • Disorders Of Renal Tubular Function
  • Disorders Of Thyroid
  • Endocrine Hypertension
  • Family History Of Malignant Neoplasm
  • Gallbladder Disease
  • Grave's Disease
  • Hashimoto Thyroiditis
  • Hyperaldosteronism
  • Hyperfunction Of Pituitary Gland
  • Hyperparathyroidism
  • Hypoparathyroidism
  • Long Term Drug Therapy
  • Male Hypogonadism
  • Malignant Neoplasm Of Endocrine Glands
  • Malignant Neoplasm Of Lymph Nodes
  • Malignant Neuroendocrine Tumors
  • Multiple Endocrine Neoplasia
  • Multiple Myeloma Of The Spine
  • Nonscarring Hair Loss
  • Nontoxic Goiter
  • Obesity
  • Orbit Disorders
  • Osteoporosis
  • Ovarian Dysfunction
  • Parathyroid Cancer
  • Personal History Of Medical Treatment
  • Pituitary Cancer
  • Polycystic Ovary Syndrome
  • Polyglandular Dysfunction
  • Postprocedural Complications
  • Presence Of Functional Implants
  • Primary Hyperparathyroidism
  • Subclinical Hypothyroidism
  • Tertiary Hyperparathyroidism
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Goiter
  • Thyrotoxic Crisis
  • Type 2 Diabetes Mellitus
  • Ureteral Cancer
  • Vitamin Deficiency
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Procedures I perform

  • Addison's Disease Treatment
  • Adrenal Antibody Testing
  • Adrenal Hormone Level Testing
  • Adrenal Hormone Regulation
  • Adrenal Insufficiency Treatment
  • Adrenal Tumor Treatment
  • Adrenal Venous Sampling
  • Computerized Tomography (CT) Scan
  • Continuous Glucose Monitoring System
  • Cushing Syndrome Management
  • Cushing's Syndrome Treatment
  • Diabetes Management
  • Enterectomy
  • Fallopian Tube Removal
  • Fine-Needle Aspiration Of Thyroid Nodule
  • Ganglion Cyst Excision
  • Glucose Control Management
  • Goiter Management
  • Grave's Disease Treatment
  • Growth Hormone Stimulation Test
  • Hashimoto Thyroiditis Management
  • Hormone Replacement Therapy
  • Hyperthyroidism Treatment
  • Insulin Tolerance Test
  • Lobectomy
  • Lymphoma Diagnosis
  • Parathyroid Tumor Surgery
  • Pheochromocytoma Treatment
  • Pioglitazone Therapy
  • Pituitary Apoplexy Treatment
  • Pituitary Disorder Treatment
  • Pituitary Tumor Surgery
  • Testicular Ultrasound
  • Thyroid Biopsy
  • Thyroid Cancer Treatment
  • Thyroid Fine-Needle Aspiration Biopsy
  • Thyroid Nodule Treatment
  • Thyroid Storm Treatment
  • Thyroidectomy
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Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    4.9
  • Extent to which the care provider listened to you

    5
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.9
  • Provider included you in decisions

    4.9
  • Concern the care provider showed for your questions or worries

    4.9
  • Likelihood of recommending this care provider to others

    4.9
  • Sep 29, 2025

    My experience with Dr. Jonklaas is always, always positive and informative. She is so very knowledgeable and kind.

  • Sep 15, 2025

    She is excellent doctor she spend long time with me she show me her knowledge and patience, she is follow up with me. Dr. Jonklaas spend 1 hour with me excellent. She answer everything.

  • Sep 4, 2025

    As usual, my visit with Dr. Jonklaas was excellent. She answered my questions and fully explained the plan going forward.