Dr. Jennifer Mammen, MD

Endocrinology, Diabetes & Metabolism*•Female•Age 55

Endocrinology, Diabetes & Metabolism*

Dr. Jennifer Mammen, MD is a diabetes & metabolism endocrinologist in Baltimore, MD. Dr. Mammen has extensive experience in Thyroid Disorders and Osteoporosis & Screening. She is affiliated with medical facilities Johns Hopkins Bayview Medical Center and The Johns Hopkins Hospital.

Dr. Jennifer Mammen, MD

Practice

4940 Eastern Ave Baltimore, MD 21224
(410) 550-0100
(410) 550-0100

Hospital Highlight

Dr. Mammen is affiliated with The Johns Hopkins Hospital Baltimore, a highly rated hospital.

At a Glance

  • Area of Expertise
    Dr. Mammen specializes in the area of Diabetes, Metabolism & Endocrinology. • See board certifications
  • Practices at Top Hospital
    America's 250 Best Hospitals Award™ • See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. • See hospitals
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Dr. Mammen's Reviews

Likelihood to recommend Dr. Mammen

3.1
10 ratings, 5 with a written review
5 star
50%
50%
4 star
0%
0%
3 star
0%
0%
2 star
10%
10%
1 star
40%
40%

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Dr. Mammen was great!
Dr. Mammen was very thorough. She took the time to review and explain in detail outside images. She had exceptional bedside manner and truly cared and knows what she is talking about. I like her approach, her demeanor, and she is very knowledgeable. I like the care plan she executed for future exams, review of existing and future images and followup.
What went well
No results
What could be improved
No results
Helpful
Dr. Jennifer Mammen was great! – Nov 11, 2023
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Dr Mammen was extremely thorough and took a long time to explain what is happening and what medicine can correct it. Would definitely recommend her.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
2 others found this helpful
Helpful
charles evans in VA, VA – Jun 22, 2018
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I have A long history of auto immune and thyroid issues. After seeing a fellow for the majority of the appt, dr. Mammen spent all of 10 min reviewing my labs from several months ago and sentenced me on my way. I wanted To discuss metabolic issues and after determining my labs were normal the appt was over. VERY disappointed with the lack of thoroughness and empathy. I would Not recommend coming here if you’re looking for anything other than analysis of blood work.
What went well
  • Wait times
What could be improved
No results
5 others found this helpful
Helpful
Whitney in Baltimore md – Dec 25, 2017
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I went to Dr Mammen because of a 25 year history of thyroid problems. After a very long wait, Dr. Mammen ordered fewer test on my thyroid than my PA at my local Primary care DR. After getting the results she determined that my results were normal. I had duplicate testing done along with more detailed tests that showed problems. Instead of treating my thyroid problems this doctor insisted that was suffering from depression (side effects of meds I was taking) and was useless to me.
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
6 others found this helpful
Helpful
ridge in Bethany Beach, DE – Jun 11, 2016
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We highly recommend Dr. Jennifer Mammen! For several yrs, my son appeared unhealthy looking and was extremely fatigued. Our PCP did every blood test you could think of.. Thyroid cam back low, he was extremely skinny, uncommon in hypo-thyroid. We made an appt. with Dr. Mamman, Endocrinologist, she diagnosed him with Addison's Disease. We are so thankful we found Dr. Mammen! She saved our son's life! She explained every detail of this disease. She's the best!!
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Jodie Kiker in Owings, MD – May 09, 2016
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Know Before You Go

About Me

biography

Dr. Jennifer Mammen, MD is a diabetes & metabolism endocrinologist in Baltimore, MD. Dr. Mammen has extensive experience in Thyroid Disorders and Osteoporosis & Screening. She is affiliated with medical facilities Johns Hopkins Bayview Medical Center and The Johns Hopkins Hospital.

  • Endocrinology, Diabetes & Metabolism

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Diabetes, Metabolism & Endocrinology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Focus on Diabetes

Locations

Practice

Johns Hopkins Bayview Medical Center4940 Eastern Ave Baltimore, MD 21224
1

Practice

Office1830 E Monument St Ste 333 Baltimore, MD 21287
2
Johns Hopkins University5501 Hopkins Bayview Cir Baltimore, MD 21224
3
Green Spring Station-Diabetes Clinic10751 Falls Rd Ste 412 Lutherville, MD 21093
4

Affiliated Hospitals

  • The Johns Hopkins Hospital

    1800 Orleans St
    Baltimore, MD 21287
    Recipient of 47
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2024)

    Top 5% in the nation for consistently delivering clinical quality

    Surgical Care Excellence Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    90%
    Patients said they were given information about recovering at home

    6% higher than the national average

    82%
    Patients would recommend the hospital to friends and family

    17% higher than the national average

    View all patient feedback

  • Johns Hopkins Bayview Medical Center

    4940 Eastern Ave
    Baltimore, MD 21224
    Recipient of 25
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    88%
    Patients said they were given information about recovering at home

    4% higher than the national average

    78%
    Patients said that doctors always listened to them and explained things well

    2% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality