Maureen Donnelly Passaro, MD| Endocrinology | MedStar Health
Maureen Donnelly Passaro

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

4.8 out of 5 (2353 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
    • CareFirst MedStar PPO
    • CareFirst Maryland Indemnity or PPO
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • CareFirst Group Medicare Advantage
    • CareFirst BC/BS Advantage Core/Enhanced
    • CareFirst Blue Card Program (Out-of-area BCBS plans)
    • CareFirst Administrators
    • CareFirst (NCA) Indemnity
    • Carefirst BlueChoice Opt Out Plus Open Access (POS)
    • Carefirst Healthy Blue (HMO/POS)
    • Carefirst BlueChoice Opt Out Open Access
    • Carefirst BlueChoice Open Access
    • Carefirst BlueChoice HMO
    • Carefirst EPO
    • Carefirst Blue Preferred PPO
    • Coventry Health Care of Virginia
    • MedStar Family Choice - Maryland Health Choice
    • Aetna Medicare Advantage HMO & PPO Plans
    • Innovation Health: Open POS Plus
    • Innovation Health: Open POS II
    • Aetna Managed Choice Open Access (POS)
    • Aetna Choice POS & Choice POS II
    • Innovation Health: POS Plus
    • Aetna Managed Choice (POS)
    • Innovation Health: POS
    • Aetna Open HMO/Open HMO Option/Open EPO Plus
    • Aetna HMO-Open Access/Select OA
    • Aetna HealthFund/Health Network Option OA
    • Innovation Health: HMO & EPO Plus
    • Aetna Select HMO/HealthFund/Health Network
    • Aetna HMO
    • Innovation Health: Open Network Only Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Network Only Plus
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • Employee Health Plan (EHP)
    • Cigna TotalCare (HMO D-SNP)
    • Cigna Preferred Medicare
    • Cigna Alliance Medicare (HMO) |
    • Cigna Achieve Medicare (HMO C-SNP)
    • Veterans Affairs Community Care Network (VA CCN)
    • United Medicare Advantage DSNP District of Columbia
    • United Student Resources
    • United Select Plus (POS)
    • United Select HMO - EPO/NPP
    • United Options (PPO) (includes Empire PPO)
    • United Golden Rule
    • United GEHA (for all other states) Compass Rose
    • D-SNP)
    • I-SNP
    • United Nursing Home Plan (C-SNP
    • United Erickson Advantage Plans
    • United Choice Plus
    • United Choice
    • United Mamsi Life & Health
    • United Core Essential (HMO)
    • United Navigate
    • MedStar Family Choice DC Healthy Families
    • MedStar Family Choice DC Healthcare Alliance
    • United MD IPA Preferred (POS)
    • United MD IPA (HMO)
    • Kaiser Permanente Signature-Added Choice
    • Kaiser Signature
    • Kaiser HMO Plus and DHMO Plus Member
    • Kaiser Select-Added Choice
    • Kaiser Select
    • Kaiser Medicare Plus
    • Kaiser Medicare Advantage Signature and Select
    • Kaiser Flexible Choice
    • HumanaChoice PPO
    • HumanaChoice Honor’s plan PPO
    • Health Services for Children with Special Needs (HSCSN)
    • Cigna True Choice Plus Medicare (PPO)
    • Cigna True Choice Medicare (PPO)
    • Cigna POS/Network POS
    • Cigna Indemnity
    • Cigna POS Open Access & Open Access Plus
    • Cigna Network Open Access
    • Cigna HMO Open Access
    • Cigna PPO and PPO Plus
    • Cigna EPO
    • Cigna Choice Fund PPO
    • Beech Street PPO
    • Innovation Health: Indemnity
    • Aetna Traditional Choice (PPO)
    • Aetna Student Health Insurance
    • Aetna Signature Administrator PPO/TPA
    • Aetna Quality Point of Service (POS)
    • Innovation Health: PPO
    • Aetna Open Choice (PPO)
    • Cigna HMO & Network (HMO)
    • WellPoint Maryland - Maryland Health Choice
    • WellPoint Maryland
    • Virginia Premier
    • Veterans Affairs Community Care Network
    • UnitedHealthcare Individual Exchange Plans
    • United Community Plan - Maryland Health Choice Program
    • Uniformed Services Family Health Plan (USFHP)
    • Private Health Care Systems (PHCS) (PPO)
    • Priority Partners - Maryland Health Choice
    • Police and Fire Clinic
    • United Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • United Optimum Choice
    • United Group Medicare Advantage Plans
    • United AARP Medicare Complete
    • Traditional Medicare Fee for Service
    • Medicaid - Virginia
    • Medicaid - Maryland
    • Medicaid - District of Columbia
    • Tricare for Life East
    • Tricare Reserve Select
    • Tricare East Select
    • Tricare East Prime
    • Maryland Point of Service Plan (MPOS)
    • HealthyBlue PPO
    • Federal Employee Program (Std/Basic PPO/Blue Focus)
    • CareFirst NASCO
    • CareFirst MedStar Select PPO
    • First Health PPO
    • Great-West Healthcare POS/CIGNA
    • Coventry Health Care National Network PPO
    • Coventry of Delaware HMO/PPO

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
  • May 28, 2024

    Dr Passaro always shows concern for me as a patient

  • May 25, 2024

    Dr. Passaro and her team are all rockstars

  • May 23, 2024

    Again, Dr. Passaro is an honest, caring, and no bs provider. She will tell you how it is, she is thoughtful and caring. She is thorough to the point where you don't have to question any of her methods. All doctors should take note. Aspire to Dr. Passaro's level of quality and compassion!