Denise Marlatte, DNP FNP| Gastroenterology, Family Medicine | MedStar Health
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Denise Marlatte

Denise Marlatte, DNP FNP
Provider is directly employed by MedStar Health

4.8 out of 5 (541 reviews)

Specialties: Gastroenterology, Family Medicine

Languages: English

About me

Denise Marlatte is an experienced, certified doctorate nurse practitioner who treats patients with acute GI issues including IBS (diarrhea and constipation), gastroesophageal reflux disease, dysphagia (indigestion), eosinic esophagitis, and gallbladder disease, as well colon cancer screening. She sees patients at MedStar Georgetown University Hospital and MedStar Health at Lafayette Center.

She earned her Bachelor of Science from the University of Central Florida in Orlando, Florida, and her Doctor of Nursing Practice—Family Nurse Practitioner from Florida State University in Tallahassee, Florida. She is a member of the American College of Gastroenterology.

NP Marlatte takes a holistic approach to caring for patients, ensuring she not only helps patients manage their condition, but that they are also educated about their condition and the impact it can have on their overall health so they can be active partners in their care.

When she’s not working, she enjoys outdoor activities including kayaking and paddleboarding and spending time with her dog.

Clinical areas of focus

  • Colitis
  • Colonoscopy
  • Enteroscopy
  • Gastroesophageal Reflux Disease (GERD) In Children
  • Helicobacter Pylori Stool Test
  • Inflammatory Bowel Disease (IBD) With Infection
  • Intestinal Dysmotility
  • Irritable Bowel Syndrome
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Conditions and procedures

Conditions I treat

  • Abdominal Distension
  • Abdominal Pain
  • Abnormal Stool
  • Acute Pancreatitis
  • Altered Bowel Habits
  • Anal Fissures
  • Anus And Rectum Diseases
  • Aphagia And Dysphagia
  • Appendiceal Cancer
  • Biliary Tract Disease
  • Bowel Obstruction
  • Choledocholithiasis
  • Chronic Constipation
  • Chronic Diarrhea
  • Colitis
  • Colon Cancer
  • Colon Disease
  • Colorectal Malignancy
  • Constipation
  • Crohn's Disease
  • Crohn's Disease [Regional Enteritis]
  • Diaphragmatic Hernia
  • Digestive System Diseases
  • Digestive System Symptoms
  • Diseases Of Esophagus
  • Diseases Of Stomach And Duodenum
  • Diverticular Disease
  • Duodenal Ulcer
  • Duodenitis
  • Dysphagia
  • Esophageal Cancer
  • Esophagitis
  • External Hemorrhoids
  • Flatulence
  • Functional Intestinal Disorders
  • Gallbladder Cancer
  • Gallstones
  • Gastric Cancer
  • Gastritis
  • Gastroenteritis
  • Gastroesophageal Reflux Disease (GERD) In Children
  • Gastrointestinal Bleeding
  • Gastrointestinal Stromal Tumor (GIST)
  • Helicobacter Pylori
  • Hemangioma
  • Hemorrhoids
  • Hepatitis
  • Inflammatory Bowel Disease (IBD) With Infection
  • Intestinal Dysmotility
  • Intestinal Infections
  • Irritable Bowel Syndrome
  • Liver Failure
  • Malabsorption
  • Noninfective Gastroenteritis
  • Pancreatic Diseases
  • Pancreatitis
  • Paralytic Ileus And Intestinal Obstruction
  • Perianal Pain
  • Peripheral Vascular Disease Of The Intestines
  • Polycystic Liver Disease
  • Postoperative Ileus
  • Postprandial Diarrhea
  • Rectal Pain
  • Stomach Ulcers
  • Ulcerative Colitis
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Procedures I perform

  • Capsule Endoscopy
  • Colonoscopy
  • Endoscopic Mucosal Resection
  • Endoscopic Retrograde Cholangiopancreatography (ERCP)
  • Enteroscopy
  • Esophageal Dilation
  • Gastric Manometry
  • Gastrointestinal Motility Study
  • Helicobacter Pylori Stool Test
  • Hydrogen Breath Test
  • Inflammatory Bowel Disease
  • Intra-Abdominal Abscess Drainage
  • Lactose Intolerance Testing
  • Liver Biopsy
  • PH Monitoring
  • Transrectal Ultrasound
  • Upper Gi Endoscopy
  • Variceal Band Ligation
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Practice locations

Distance from Change Location Enter your Location

1133 21st St NW
Bldg 2 6th Fl
Washington, DC, 20036

202-416-2000
Get Directions

miles away

Fax 202-416-2006

3800 Reservoir Rd NW
Main Bldg 2nd Fl
Washington, DC, 20007

202-444-8541
Get Directions

miles away

Fax 877-303-1462

1805 Columbia Rd NW
Washington, DC, 20009

202-797-4960
Get Directions

miles away

Fax 202-797-4961

Insurance

This list represents the major payors accepted by MedStar Health.

NOTE: Payor contracts change and not all plans associated with a payor may be covered. Payors may offer multiple plans. If you have a question related to your insurance, please contact your insurance plan directly. Contact information is located on your health insurance ID card.

*Denotes limited participation. Specific providers and practices may NOT be participating. Please contact your insurance plan directly.

  • List of insurance plans we accept
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Cigna Health Care
    • Kaiser Permanente*
    • MedStar Select (Administered by CareFirst)
    • United HealthCare
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Healthspring
    • Humana
    • Medicare & Railroad Medicare
    • United HealthCare
    • Aetna Better Health of Maryland *
    • Medical Assistance/Medicaid
    • MedStar Family Choice MD
    • Priority Partners *
    • United HealthCare Community Health Plan MD
    • Wellpoint MD
    • AmeriHealth Caritas
    • Health Services For Children With Special Needs (HSCSN)
    • Medical Assistance/Medicaid
    • MedStar Family Choice DC
    • Johns Hopkins Employer Health Programs *
    • Johns Hopkins US Family Health Plan *
    • MultiPlan
    • Private Healthcare Systems
    • Tricare/Humana Military
    • VA Community Care Network (VACCN)

Education

Board Certification: American Academy of Nurse Practitioners, Family Medicine

Board Certification: American Nurses Credentialing Center, Family Medicine

Graduate: Florida State University (2019)

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
  • Provider included you in decisions

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

    4.8
  • Likelihood of recommending this care provider to others

    4.8
  • Jun 7, 2026

    Very knowledgeable.

  • May 30, 2026

    I will use Denise and recommend her to others if I have the opportunity

  • May 29, 2026

    I really like NP it was very easy to talk to her she explains everything things in depth I thank her very much