Thaddeus Demetrius Mamienski, DO| Obstetrics And Gynecology | MedStar Health
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Thaddeus Demetrius Mamienski

Thaddeus Demetrius Mamienski, DO
Provider is directly employed by MedStar Health

4.9 out of 5 (123 reviews)

Specialties: Obstetrics And Gynecology

Languages: English

Clinical areas of focus

  • Pregnancy
  • Uterine Fibroids
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Conditions and procedures

Conditions I treat

  • Abnormal Breast Imaging
  • Abnormal Products Of Conception
  • Abnormal Urine Test Results
  • Abnormal Vaginal Bleeding
  • Abnormal Vaginal Discharge
  • Acquired Absence Of Female Genital Organs
  • Acute Pelvic Pain
  • Adnexal Masses
  • Bartholin's Gland Diseases
  • Breast Disorders
  • Breast Lump
  • Breast Lump And Breast Cancer Screening
  • Candidiasis
  • Cervical Cancer
  • Cervical Cancer Screening
  • Cervical Dysplasia
  • Cervix Uteri Disorders
  • Colposcopy Examination
  • Complications Of The Puerperium
  • Cystitis
  • Cystocele
  • Decreased Libido
  • Diabetes In Pregnancy
  • Disorders Of Amniotic Fluid And Membranes
  • Dysmenorrhea
  • Early Pregnancy Loss
  • False Labor
  • False Positive Pap Smear
  • Female Genital Pain
  • Female Genital Tract Polyp
  • Female Infertility
  • Female Pelvic Inflammatory Disease
  • Female Urethral Stricture
  • Fetal Stress
  • Genitourinary Symptoms
  • Gestational Hypertension
  • Herpes
  • High Risk Pregnancy
  • Hpv (HUMAN PAPILLOMAVIRUS)
  • Hyperemesis Gravidarum
  • Hypertension In Pregnancy, Including Preeclampsia
  • Infertility
  • Irregular Menstruation
  • Late Pregnancy
  • Late Pregnancy Complications
  • Leiomyoma Of Uterus
  • Maternal Care For Fetal Problems
  • Maternal Diseases
  • Menopause
  • Menstrual Disorders
  • Miscarriage
  • Morning Sickness
  • Multiple Gestations
  • Ovarian Cancer
  • Ovarian Cysts
  • Ovarian Cysts And Benign Neoplasms
  • Ovarian Dysfunction
  • Ovary, Fallopian Tube And Broad Ligament Disorders
  • Pelvic Organ Prolapse
  • Placental Disorders
  • Polycystic Ovary Syndrome
  • Postpartum Depression
  • Postpartum Hemorrhage
  • Pregnancy
  • Pregnancy Hemorrhage
  • Pregnancy Hemorrhage And Placenta Previa
  • Pregnant State
  • Premature Rupture Of Membranes
  • Preterm Labor
  • Sexually Transmitted Diseases
  • Spontaneous Abortion
  • Tubal Pregnancy
  • Uterine And Vaginal Bleeding Abnormalities
  • Uterine Fibroids
  • Uterine Infections
  • Uterine Prolapse
  • Uti (URINARY TRACT INFECTION) During Pregnancy
  • Vagina And Vulva Inflammation And Infections
  • Vulva And Perineum Disorders
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Procedures I perform

  • Adhesiolysis
  • Amniocentesis
  • Birth Control
  • Cervical Biopsy
  • Cervical Cancer
  • Cervical Cryotherapy
  • Cesarean Delivery
  • Chorionic Villus Sampling
  • Colposcopy
  • Cone Biopsy
  • Contraceptive Device Insertion
  • C-Section
  • Cystometrogram
  • Delivery With Forceps
  • Delivery With Vacuum Extraction
  • Electrodesiccation And Curettage
  • Endometrial Ablation
  • Endometrial Biopsy
  • Episiotomy
  • Fetal Monitoring
  • Genetic Counseling
  • Genitourinary Fistula Treatment
  • Hormone Replacement Therapy
  • In Vitro Fertilization
  • Intestinal Reconstruction
  • Laparoscopic Hysterectomy
  • Mammography
  • Menstrual Disorder Treatment
  • Natural Childbirth
  • Oophorectomy
  • Ovarian Cyst Removal
  • Pap Smear
  • Pelvic Exam
  • Polycystic Ovary Syndrome Treatment
  • Pregnancy Test
  • Pregnancy Ultrasound
  • Pregnancy With Uterine Rupture
  • Prenatal Care
  • Recurrent Miscarriage Treatment
  • Robotic Surgery
  • Salpingo-Oophorectomy
  • Sonohysterography
  • Uterine Ablation
  • Uterine Fibroid Embolization
  • Vaginal Contraceptive Ring Removal
  • Vaginal Laser Rejuvenation
  • Vulvar Biopsy
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Practice locations

Distance from Change LocationEnter your Location

501 N Frederick Rd
Ste 202
Gaithersburg, MD, 20877

301-208-2900

Fax 301-208-2908

Get Directions

miles away

Fax 301-208-2908

2415 Musgrove Rd
Ste 209
Silver Spring, MD, 20904

301-384-4788

Fax 301-384-4789

Get Directions

miles away

Fax 301-384-4789

41680 Miss Bessie Dr
Ste 102
Leonardtown, MD, 20650

301-997-1788

Fax 301-997-1790

Get Directions

miles away

Fax 301-997-1790

7503 Surratts Rd
Clinton, MD, 20735

301-877-4360

Fax 301-877-9690

Get Directions

miles away

Fax 301-877-9690

18101 Prince Philip Dr
Ste 5100
Olney, MD, 20832

301-570-7424

Fax 301-570-7425

Get Directions

miles away

Fax 301-570-7425

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 Group Medicare Advantage prescription drug benefit (PPO)
    • Anthem BCBS Medi Blue SNP
    • Aetna Premier 200PD
    • DC/MD SHOP QHP Small Business Plans
    • Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
    • United Medicare Private Fee-for-Service (PFFS) plans
    • IH-Open POS II
    • Aetna Medicare Advantage PFFS Plan
    • First Health PPO
    • Medicare FFS
    • CareFirst Blue Card Program
    • Uniformed Services Family Health Plan
    • Private Health Care Systems (PPO)
    • UHC Passport
    • Aetna Elect Choice/ Open Access (POS)
    • Johns Hopkins Advantage MD HMO
    • United Healthcare Options (PPO)
    • First Health PPO
    • Erickson Advantage Plans
    • Anthem Federal Employee Program Standard
    • Kaiser Permanente HMO Plus and DHMO Plus Member
    • Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
    • Mamsi Life & Health (Indem./PPO) Cardiac Global
    • Cigna True Choice Medicare (PPO)
    • HumanaChoice PPO
    • UHC Group Medicare Advantage Plans (HMO, POS, PPO)
    • IH-Open HMO Option
    • Aetna Worker's Compensation Network
    • Private Fee-for-Service Plans (PFFS)
    • BlueChoice Open Access
    • M.D. IPA Preferred (POS)
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Aetna Advantage 6350
    • Choice POS II Open Access
    • POS OA
    • MedStar Family Choice - Maryland Health Choice
    • United Healthcare Select Plus (POS)
    • CareFirst Federal Employee Program (Std. & Basic PPO)
    • CareFirst (NCA) Indemnity
    • Johns Hopkins Advantage MD PPO
    • Mamsi Life & Health (Indem./PPO)
    • IH-POS Plus
    • United Healthcare Choice Plus
    • IH-Indemnity
    • CareFirst BlueChoice HMO
    • CareFirst Group Medicare Advantage
    • CIGNA SureFit (HMO)
    • TriWest Healthcare Alliance
    • Aetna VA Exchange
    • Cigna True Choice Plus Medicare (PPO)
    • Coventry Health Care National Network PPO
    • Optimum Choice
    • United Healthcare Choice Cardiac Global
    • Medicare Direct
    • IH-HMO
    • Kaiser Permanente Signature - Added Choice
    • Coventry of Delaware HMO/PPO
    • Aetna Basic
    • Anthem BCBS of VA HealthKeepers (POS & POS OA)
    • CIGNA HMO & Network (HMO)
    • Health Services for Children with Special Needs
    • Aetna Advantage 6350PD
    • Choice POS II
    • Great-West Healthcare POS/CIGNA
    • Core Essential (HMO)
    • Aetna Classic 5000
    • CIGNA PPO
    • Advantra Platinum (PPO)
    • TRICARE for Life East
    • IH-Network Only Plus
    • UnitedHealthcare Medicare Adv. Special Needs Plans
    • Blue Choice Advantage
    • Veterans Affairs Community Care Network
    • Jai Medical Systems - Maryland Health Choice
    • United Healthcare Navigate Cardiac Global
    • Aetna Quality Point of Service (POS)
    • AMERIVANTAGE/Amerigroup Community Care
    • Aetna Better Health of MD
    • Beech Street PPO
    • BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
    • Kaiser Permanente Medicare Advantage Signature and Select
    • MedStar Family Choice DC Healthy Families
    • Aetna Traditional Choice (PPO)
    • Kaiser Maryland Medicaid MCO
    • HighMark
    • OCI Direct (HMO)
    • Cigna Achieve Medicare (HMO C-SNP)
    • Alterwood Advanatge HMO & DSNP Plans
    • Amerigroup DC Alliance
    • Cigna Preferred Medicare (HMO)
    • United Healthcare Community Plan - VA Medicaid MCO
    • Aetna Student Health Insurance
    • CIGNA HMO Open Access
    • Choice POS
    • Anthem BCBS of VA HealthKeepers Plus
    • CareFirst Maryland Indemnity or PPO
    • Network OA
    • Tricare Reserve Select
    • United Healthcare Select HMO - EPO/NPP
    • TRICARE East Select
    • CareFirst FEP Blue Focus
    • Kaiser Permanente Select - Added Choice
    • Kaiser Permanente Medicare Plus
    • Healthy Blue (HMO, POS)
    • HealthyBlue PPO
    • CareFirst Dual Prime HMO-SNP
    • HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
    • TRICARE East Prime
    • IH-Open EPO Plus
    • Anthem Federal Employee Program Basic
    • CareFirst NASCO
    • AmeriHealth Caritas DC Healthcare Alliance
    • NYC Medicare Advantage Plus
    • Optima Family Care MCO - VA Medicaid MCO
    • MD IPA (HMO) & MD IPA Preferred Cardiac Global
    • Aetna Managed Choice Open Access (POS)
    • Choice Fund PPO
    • BCBS Out-of-State Medicare Plans (Blue Advantage)
    • Aetna Medicare Advantage HMO & PPO Plans
    • CareFirst Blue Preferred PPO
    • CIGNA PPO Plus
    • Police and Fire Clinic
    • Anthem BCBS of VA Key Care POS/PPO/Indemnity
    • Anthem BCBS Medi Blue Plus
    • Cigna TotalCare (HMO D-SNP)
    • United Healthcare Choice Plus Cardiac Global
    • Priority Partners - Maryland Health Choice
    • CareFirst Blue Choice Opt Out Open Access
    • CareFirst Community Health Plan of MD
    • CIGNA POS/Network POS
    • Lasso Healthcare - Medicare Medical Savings Account
    • Aetna Classic 3500
    • HumanaChoice Honor's plan PPO
    • Kaiser Permaenete Signature - Added Choice Cardiac Global
    • Kaiser Permanente Select
    • Amerigroup DC Healthy Families
    • AmeriHealth Caritas DC Healthy Families
    • CareFirst Maryland Point of Service Plan
    • UnitedHealthcare Individual Exchange Plans
    • Aetna Better Health of VA
    • Coventry Health Care of Virginia
    • Kaiser Permanente Select Cardiac Global
    • United Healthcare Select HMO-EPO/NPP Cardiac Global
    • IH-POS
    • Navigate
    • MultiPlan, Inc
    • Magellan Complete Care of VA - VA Medicaid MCO
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • Aetna Open Choice (PPO)
    • CareFirst MedStar PPO
    • Maryland Physicians Care MCO
    • Optimum Choice Preferred (POS)
    • UnitedHealthcare Medicare Advantage DSNP District of Columbia
    • Aetna HMO
    • Kaiser Permanente Signature
    • M.D. IPA (HMO)
    • Choice Care Network/HUMANA (PPO)
    • OA Plus
    • IH-Open POS Plus
    • Cigna Alliance Medicare (HMO)
    • CareFirst Blue Choice Opt Out Plus Open Access (POS)
    • United HealthCare Community Plan - Maryland Health Choice Program
    • Options PPO Cardiac Global
    • IH-Open HMO
    • United Healthcare Choice
    • UnitedHealthcare and AARP Medicare Complete Plans
    • CareFirst Administrators
    • Johns Hopkins Advantage MD PLUS PPO
    • IH-PPO
    • Humana Medicare Advantage - PPO
    • Employee Health Plan
    • Kaiser Permanente Flexible Choice POS Cardiac Global
    • CareFirst BlueCross BlueShield Advantage Core/Enhanced
    • Anthem BCBS Medi Blue Dual Adv
    • IH-EPO Plus
    • Aetna Managed Choice (POS)
    • CIGNA EPO
    • Humana Gold Plus HMO
    • MedStar Family Choice DC Healthcare Alliance
    • Aetna Advantage 5750
    • IH-Open Network Only Plus
    • United Student Resources
    • Anthem BCBS of VA HealthKeepers (HMO)
    • Kaiser Permanente Flexible Choice 3-tier POS
    • WellPoint Maryland - Maryland Health Choice
    • Aetna Signature Administrator PPO/TPA
    • CIGNA Connect EPO
    • CIGNA Indemnity
    • CareFirst EPO
    • Sentara Health
    • Aetna Classic 5000PD
    • Geisinger Medicare Advantage
    • Select HMO/HealthFund/Health Network
    • Medicare Advantage - Advantra Value (PPO)
    • CareFirst MedStar Select PPO
    • Humana Medicare Advantage - HMO Open Access

Education

Board Certification: American Board of Obstetrics and Gynecology, Obstetrics and Gynecology

Residency: National Naval Medical Center (2009)

Medical School: Philadelphia College of Osteopathic Medicine (2005)

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

    4.9
  • 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
  • Apr 17, 2026

    I felt the provider was kind, respectful, and took time to explain issues and options. Highly recommend

  • Feb 1, 2026

    Dr. Thaddeus Mamienski a doctor who generates confidence and gives you good treatment my experience was excellent with my doctor

  • Jan 30, 2026

    He seemed very caring and understanding. After a few recent experiences with receiving subpar care, this was really comforting.