Diana S. Sunday, MD| Obstetrics And Gynecology | MedStar Health
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Diana S. Sunday

Diana S. Sunday, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (1377 reviews)

Specialties: Obstetrics And Gynecology

Languages: English

(301) 570-7425

About me

Diana Brill Sunday, MD, specializes in obstetrics and gynecology at MedStar Montgomery Medical Center, providing services to meet the needs of women of all ages, from prenatal and routine gynecologic care to surgical and nonsurgical treatments for a wide range of conditions.

Dr. Sunday earned her medical degree at the University of Virginia School of Medicine followed by a residency in obstetrics and gynecology at the University of Maryland Medical Center. During her residency, she took an interest in training in minimally invasive gynecologic surgery. She is board certified in general obstetrics and gynecology with the American Board of Obstetrics and Gynecology (ABOG) and is a Fellow of the American College of Obstetricians and Gynecologists. (FACOG).

Her professional affiliations currently include memberships with the American College of Obstetrics and Gynecology and the American Medical Association.

Conditions and procedures

Conditions I treat

  • Abnormal Breast Imaging
  • Abnormal Products Of Conception
  • Abnormal Urine Test Results
  • Abnormalities Of Forces Of Labor
  • Acquired Absence Of Female Genital Organs
  • Antenatal Screening Abnormalities
  • Bartholin's Gland Diseases
  • Breast And Lactation Disorders In Pregnancy
  • Breast Disorders
  • Breast Lump
  • Candidiasis
  • Cervix Uteri Disorders
  • Complications Of The Puerperium
  • Congenital Malformations Of Uterus And Cervix
  • Diabetes In Pregnancy
  • Disorders Of Amniotic Fluid And Membranes
  • Failed Induction Of Labor
  • False Labor
  • Female Genital Pain
  • Female Genital Tract Polyp
  • Female Infertility
  • Fetal Stress
  • Genitourinary Symptoms
  • Gestational Edema And Proteinuria Management
  • Gestational Hypertension
  • Herpes
  • Herpes (GENITAL HERPES)
  • High Risk Pregnancy
  • Hypertension In Pregnancy, Including Preeclampsia
  • Labor Complications And Umbilical Cord Problems
  • Late Pregnancy
  • Late Pregnancy Complications
  • Leiomyoma Of Uterus
  • Malignant Neoplasm Of Cervix Uteri
  • Maternal Care For Fetal Problems
  • Maternal Diseases
  • Menstrual Disorders
  • Multiple Gestations
  • Obstetric Trauma
  • Obstructed Labor
  • Ovarian Cysts And Benign Neoplasms
  • Ovarian Dysfunction
  • Ovary, Fallopian Tube And Broad Ligament Disorders
  • Perineal Laceration During Delivery
  • Placental Disorders
  • Polyhydramnios
  • Postpartum Hemorrhage
  • Pregnancy Hemorrhage
  • Pregnancy Hemorrhage And Placenta Previa
  • Pregnancy Nausea
  • Pregnant State
  • Premature Placenta Separation
  • Premature Rupture Of Membranes
  • Preterm Labor
  • Sexually Transmitted Diseases
  • Spontaneous Abortion
  • Tubal Pregnancy
  • Uterine And Vaginal Bleeding Abnormalities
  • Uterine Infections
  • Uterus Problems
  • 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
  • Basivertebral Nerve Ablation
  • Birth Control
  • Cervical Biopsy
  • Cervical Cerclage Removal
  • Cervical Conization With Leep
  • Cervical Cryotherapy
  • Cesarean Delivery
  • Chorionic Villus Sampling
  • Colposcopy
  • Cone Biopsy
  • Contraceptive Device Insertion
  • C-Section
  • Cystometrogram
  • Delivery With Forceps
  • Delivery With Vacuum Extraction
  • Ectopic Pregnancy Surgery
  • Electrodesiccation And Curettage
  • Endometrial Ablation
  • Endometrial Biopsy
  • Endometriosis Surgery
  • Enterocele Repair
  • Episiotomy
  • Fallopian Tube Removal
  • Fertility Counseling
  • Fetal Heart Rate Monitoring
  • Fetal Monitoring
  • Fetal Ultrasound
  • Genetic Counseling
  • Gestational Carrier
  • Hormone Replacement Therapy
  • In Vitro Fertilization
  • Laparoscopic Hysterectomy
  • Mammography
  • Menstrual Disorder Treatment
  • Neonatal Dermatology
  • Neonatal Hypertension Treatment
  • Newborn Screening Tests
  • Oophorectomy
  • Ovarian Cyst Removal
  • Pap Smear
  • Pelvic Exam
  • Pelvic Floor Surgery
  • Pelvic Pain Treatment
  • Pelvic Ultrasound
  • Polycystic Ovary Syndrome Treatment
  • Postpartum Care
  • Pregnancy And Postpartum Massage
  • Pregnancy Checkup
  • Pregnancy Class
  • Pregnancy Complications Evaluation
  • Pregnancy Test
  • Pregnancy Ultrasound
  • Pregnancy With Uterine Rupture
  • Prenatal Care
  • Prenatal Checkup
  • Prenatal Follow-Up
  • Prenatal Monitoring
  • Prenatal Testing
  • Recurrent Miscarriage Treatment
  • Salpingo-Oophorectomy
  • Sonohysterography
  • Uterine Ablation
  • Uterine Artery Embolization
  • Uterine Fibroid Embolization
  • Vaginal Contraceptive Ring Removal
  • Vaginal Laser Rejuvenation
  • Vaginoplasty
  • Vulvar Biopsy
  • Water Birth
  • Yeast Infection Treatment
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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

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

Videos

Education

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

Residency: University of Maryland Medical Center (2016)

Medical School: University of Virginia School of Medicine (2012)

Hospital affiliations

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 14, 2026

    Dr. Sunday was thorough in her explanation of my issue and treatment options. She listened to me and followed my decisions for treatment. I would recommend Dr. Sunday to others and going forward I will continue to seek care from her.

  • Apr 9, 2026

    Appreciate the unhurried atmosphere, and taking the time to listen to my concerns.

  • Apr 2, 2026

    Dr. Sunday always provides excellent care. She is amazing at explaining everything from risk and benefits to just general concerns one may have about their health. She is thorough and caring. I had multiple questions and she answered everything without hesitation and to my satisfaction. I always make sure to recommend her to anyone looking for OB/GYN care.