Maureen Donnelly Passaro, MD| Endocrinology | MedStar Health

Maureen Donnelly Passaro, MD
Provider is directly employed by MedStar Health

4.8 out of 5 (2082 reviews)

Specialties: Endocrinology

Languages: English

301-570-7002

About me

Dr. Passaro's practice philosophy is to provide comprehensive care in a caring and efficient manner. She resides in Montgomery County with her husband and three children.

Dr. Passaro was recognized by Washingtonian magazine as a Top Doctor.

Dr. Passaro sees patients at:
18109 Prince Philip Dr
Suite B200
Olney, MD 20832
301-774-4529

Clinical areas of focus

  • Adrenal Disorders
  • Diabetes Mellitus
  • Goiter
  • Grave's Disease
  • Hashimoto Thyroiditis
  • Hypercalcemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypothyroidism
  • Insulin Pump
  • Insulin Resistance
  • Obesity
  • Osteoporosis
  • Pituitary Disorders
  • Pituitary Tumor
  • Polycystic Ovary Syndrome
  • Prediabetes
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Conditions and procedures

Conditions I treat

  • Abnormal Glucose Metabolism
  • Addison's Disease
  • Adrenal Adenoma
  • Adrenal Disorders
  • Adrenal Hyperplasia
  • Adrenal Neoplasm
  • Adrenal Nodules
  • Androgen Excess
  • Calcium Metabolism
  • Carcinoid Syndrome
  • Cholesterol Disorders
  • Congenital Adrenal Hyperplasia
  • Congenital Hypothyroidism
  • Conn Syndrome
  • Diabetes Insipidus
  • Diabetes Mellitus
  • Diabetic Coma
  • Diabetic Ketoacidosis
  • Diabetic Nephropathy
  • Diabetic Neuropathy
  • Disorders Of Water Balance
  • Elevated Acth
  • Elevated Growth Hormone
  • Endocrine Complications Of Transplant
  • Endocrine Disorders
  • Familial Dyslipidemia
  • Familial Hyperparathyroidism
  • Familial Hypocalciuric Hypercalcemia
  • Glucocorticoid Deficiency
  • Goiter
  • Grave's Disease
  • Growth Disorders
  • Growth Hormone Abnormalities
  • Growth Hormone Deficiency
  • Gynecomastia
  • Hashimoto Thyroiditis
  • History Of Pituitary Mass
  • Hurthle Cell Cancer
  • Hyperaldosteronism
  • Hypercalcemia
  • Hyperglycemia
  • Hyperparathyroidism
  • Hyperthyroidism
  • Hypo Thalamic Pituitary Disorder
  • Hypocalcemia
  • Hypoglycemia
  • Hypoparathyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Insulin Resistance
  • Insulinoma
  • Islet Cell Tumor
  • Low T4
  • Metabolic Abnormalities
  • Metabolic Bone Diseases
  • Metabolic Syndrome
  • Moon Facies
  • Morbid Obesity
  • Multiple Endocrine Neoplasia
  • Multiple Endocrine Neoplasia Type 1
  • Multiple Endocrine Neoplasia Type 2
  • Multiple Endocrine Neoplasia Type 2A
  • Multiple Endocrine Neoplasia Type 2B
  • Myxedema
  • Nodular Goiter
  • Non Toxic Goiter
  • Obesity
  • Osteopenia
  • Osteoporosis
  • Ovarian Failure
  • Panhypopituitarism
  • Parathyroid Adenoma
  • Parathyroid Disease
  • Parathyroid Hyperplasia
  • Parathyroid Mass
  • Pheochromocytoma
  • Pituitary Adenoma
  • Pituitary Disorders
  • Pituitary Tumor
  • Polycystic Ovary Syndrome
  • Polyglandular Autoimmune Syndrome
  • Prediabetes
  • Secondary Amenorrhea
  • Secondary Hyperaldosteronism
  • Thyroid Cancer
  • Thyroid Cyst
  • Thyroid Disorder
  • Thyroid Nodule
  • Thyroid Storm
  • Thyroiditis
  • Thyrotoxic Exophthalmos
  • Thyrotoxicosis
  • Toxic Diffuse Goiter
  • Toxic Nodular Goiter
  • Type 1 Diabetes
  • Type 2 Diabetes
  • Vitamin D Deficiency
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Procedures I perform

  • Diabetes Education
  • Insulin Pump
  • Radioiodine Therapy
  • Thyroid Function Blood Panel
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Practice locations

Distance from Change LocationEnter your Location

18109 Prince Philip Drive
Suite B200
Olney, MD, 20832

301-570-7770

Fax 855-256-6851

Get Directions

miles away

Fax 855-256-6851

Insurance

MedStar Health accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Health, please call your insurance company.

  • List of insurance plans we accept
    • Blue Choice Advantage & Healthy Blue (HMO, POS)
    • UnitedHealthcare and AARP Medicare Complete Plans/ UHC Group Medicare Advantage Plans HMO, POS, PPO
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)
    • Cigna HealthSpring Medicare Advantage
    • Kaiser Permanente Select
    • Kaiser PermanenteSelect-Added Choice
    • UnitedHealthcare Medicare Adv/Special Needs Plans
    • Kaiser Permanente Signature
    • Kaiser Virginia Premier
    • Aetna Better Health of Maryland
    • Kaiser Permanente Signature-Added Choice
    • UHC Community Plan of MD
    • Kaiser Permanente Flexible Choice POS
    • Kaiser Permanente Medicare Plus (Medicare Supplemental Plan)
    • Private Health Care Systems (PHCS) (PPO)
    • Medicare Fee for Service
    • CFBCBS EPO
    • Kaiser MD Medicaid MCO
    • CFBCBS Federal Employee Program (Std/Basic PPO/Blue Focus)
    • Aetna Innovations: HMO & EPO Plus
    • Select HMO/HealthFund/Health Network
    • Aetna HMO
    • Open POS II
    • Innovation Health: Open POS Plus
    • Choice POS & Choice POS II
    • Aetna Managed Choice Open Access (POS)
    • Open EPO Plus
    • Opoen HMO Option
    • Open HMO
    • Innovation Health: POS
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Innovation Health: Open Network Only Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: POS Plus
    • Aetna Managed Choice (POS)
    • Innovation Health: PPO
    • Aetna Open Choice (PPO)
    • Innovation Health: Indemnity
    • Aetna Traditional Choice (PPO)
    • BlueChoice Open Access
    • CFBCBS Blue Choice Opt Out Open Access
    • HealthyBlue PPO
    • CFBSBC Blue Preferred PPO
    • Choice Fund PPO
    • PPO and PPO Plus
    • CIGNA EPO
    • POS OA & OA Plus
    • Network OA
    • CIGNA HMO Open Access (OA)
    • United Healthcare Choice
    • Coventry Health Care of Virginia
    • Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
    • M.D. IPA Preferred (POS)
    • Aetna Quality Point of Service (POS)
    • CIGNA HMO & Network (HMO)
    • CFBCBS BlueChoice HMO
    • CFBCBS Maryland Point of Service Plan (MPOS)
    • CIGNA Indemnity
    • CIGNA POS/Network POS
    • Tricare for Life (Medicare Supplemental Plan)
    • United Student Resources
    • MedStar Family Choice - Maryland Health Choice
    • Mamsi Life & Health (Indem./PPO)
    • CFBCBS (NCA) Indemnity
    • First Health PPO
    • Aetna Student Health Insurance
    • CFBCBS Maryland Indemnity or PPO
    • Great-West Healthcare POS/CIGNA
    • Aetna Medicare Advantage HMO & PPO Plans
    • MedStar Select (MedStar Associates' Plan)
    • United Healthcare Choice Plus
    • M.D. IPA (HMO)
    • CFBCBS Blue Choice Opt Out Plus Open Access (POS)
    • Coventry Health Care National Network PPO
    • Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • United Healthcare Select HMO - EPO/NPP
    • United Healthcare Select Plus (POS)
    • FIRST HEALTH
    • Tricare Prime
    • Coventry of Delaware HMO/PPO
    • Aetna Worker's Compensation Network

Education

Board Certification: American Board of Internal Medicine, Endocrinology Diabetes and Metabolism

Fellowship Program: National Cancer Institute (1996)

Fellowship Program: National Institutes of Health Clinical Center (1996)

Residency Program: Stamford Hospital (1993)

Internship Program: Stamford Hospital (1991)

Medical School: New York Medical College (1990)

Hospital affiliations

Ratings and reviews

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

    4.8
  • Extent to which the care provider listened to you

    4.8
  • Care provider's discussion of any proposed treatment (options, risks, benefits, etc.)

    4.8
  • Care provider's efforts to include you in decisions about your care

    4.8
  • Concern the care provider showed for your questions or worries

    4.8
  • Likelihood of recommending this care provider to others

    4.8
  • Dec 21, 2023

    I have recommended her on Nextdoor app as did others.

  • Dec 18, 2023

    Good

  • Nov 30, 2023

    As always, excellent care in understanding and explaining. And very kind.