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 (120 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
  • Celiac Plexus Block
  • 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
  • Donor Sperm Insemination
  • Electrodesiccation And Curettage
  • Embryo Transfer
  • Endometrial Ablation
  • Endometrial Biopsy
  • Enterectomy
  • Enteroscopy
  • Episiotomy
  • Fetal Monitoring
  • Ganglion Cyst Excision
  • Gastric Surgery
  • 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
  • Sterilization
  • Total Proctocolectomy
  • Tubal Ligation
  • 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

18101 Prince Philip Dr
Ste 5100
Olney, MD, 20832

301-570-7424

Fax 301-570-7425

Get Directions

miles away

Fax 301-570-7425

2415 Musgrove Rd
Ste 209
Silver Spring, MD, 20904

301-384-4788

Fax 301-384-4789

Get Directions

miles away

Fax 301-384-4789

7503 Surratts Rd
Clinton, MD, 20735

301-877-4360

Fax 301-877-9690

Get Directions

miles away

Fax 301-877-9690

41680 Miss Bessie Dr
Ste 102
Leonardtown, MD, 20650

301-997-1788

Fax 301-997-1790

Get Directions

miles away

Fax 301-997-1790

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

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
  • Nov 18, 2025

    Put me at ease

  • Nov 7, 2025

    He is excellent

  • Oct 1, 2025

    Dr. Mamienski is a very attentive and empathetic doctor. Paid great attention to my concern.