Dr. Thomas Maslen, MD

Dr. Thomas Maslen, MD

Internal Medicine  |  
Male  |  
Age 57
Insurances AcceptedSave
Dr. Thomas Maslen, MD is an internal medicine specialist in Greenbelt, MD and has been practicing for 21 years. He graduated from University Of Maryland School Of Medicine in 1997 and specializes in internal medicine.

7525 Greenway Center Dr Ste 312

Greenbelt, MD 20770

Contact Information

(301) 220-0200

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Coventry Health Care
  • First Health (Coventry Health Care)
  • Humana
  • MultiPlan

*Please verify this information when scheduling an appointment.

Learn about Dr. Maslen

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Dr. Maslen's Experience

Dr. Maslen's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Internal Medicine
  • No sanctions found
  • No board actions found


  • Internal Medicine

Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated


Read Less


  • Anemia and Iron Deficiency Screening
  • Arterial Blood Gas Test (ABG)
  • Cholesterol Screening
  • Diabetes Counseling
  • Electrocardiogram (EKG)
  • Hepatitis B Virus Screening
  • Hepatitis C Virus Screening
  • Hepatitis Screening
  • Immunization
  • Prostate Cancer Screening
  • Pulmonary Function Test
  • Sexually Transmitted Infections Screening
  • Thyroid Screening
  • Wellness Examination

Background Check

Malpractice Claims not available

Healthgrades does not collect malpractice information for Maryland.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • University Of Maryland School Of Medicine
    Medical School | Graduated 1997
  • University Of MD Med Sys
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Maslen has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

Dr. Maslen does not have any memberships or affiliations listed. If you are Dr. Maslen and would like to add memberships or affiliations, please update your profile.

Dr. Maslen's Reviews

Likelihood of recommending Dr. Maslen to family and friends
based on 45 total reviews (6 with comments)

Likelihood to Recommend (45)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Maslen's Performance

Explains condition(s) well
Answers Questions
Time well spent

Office & Staff Performance

Office environment
Staff friendliness
Average wait time
Under 10 minutes

Patient Comments (6)

in Greenbelt, MD
I was Dr. Maslen's patient for over 10 years. Many positives: the office is well organized and clean. The phone calls are returned, and medication requests are handled quickly and correctly. The office nurse, Asia, is very good. Dr. Maslen himself is great as long as the medical and administrative...more
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in Berwyn Heights
I like him a lot. Very good about explaining the science behind the treatments. Not an over-treater, which I like. Easy to get an appointment, and waiting room delays are rare in my experience.
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in Bowie, MD
Best doctor i've been to in a while. He is very friendly, knowledgeable, efficient and concise.
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in Washington, DC
Went in for a checkup and routine blood work. They checked my insurance and said everything would be covered. Three months later, I got a bill for about $300 and found out that instead of sending it to the lab that was covered by my insurance, they chose another for some unknown reason. Upon...more
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in Washington, DC
Dr. Maslen is very personal and professional. He takes the time to listen and treat each patient. He is like a member of the family.
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