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About

Southern Maryland Medical Group LLC is a private primary care medical practice with three offices in Maryland, including a Greenbelt location (7500 Greenway Center Dr, Suite 1200, Greenbelt, MD 20770). They emphasize a blend of traditional care with modern technology and offer services in primary/adult preventive care. The group is headquartered in Clinton, MD, and employs a small staff (about 6) with annual revenue around $7.7M. Contact numbers include 301-868-0243, 301-486-7581, and 301-618-0771, with additional local numbers for their Greenbelt and other offices. Web presence shows modest traffic and a low employer rating (2.7/5 from 6 reviews). If you’re seeking a primary care doctor in Greenbelt, SMMG provides located options within the Greenbelt area as part of their three Maryland offices.

Clinic Type

Family Practice

Address

7500 Greenway Center, Dr #1200 Greenbelt, MD 20770

Phone

301-486-7580

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Telehealth

Yes

Services Offered

  • Primary care
  • Family medicine
  • Pediatrics
  • Geriatrics
  • TeleHealth

Insurance & Payment

  • Insurance

Walk-ins accepted, TeleHealth may be available, Insurance billed, Co-pay at visit

Languages Spoken

  • English

FAQs

Patient information page forms

Two forms available: Patient Registration Form and Medical History Form.

Social Media

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Yelp, Healthgrades, LocalityBiz, Zocdoc: Generally low ratings on public platforms like Yelp (often cited as poor or having significant complaints) (Specific numbers vary by platform (e.g., Healthgrades shows ratings for individual providers; Yelp and other aggregates reflect mixed/low feedback))

Patients praise

  • Knowledgeable and patient doctors, particularly Dr. Mary Manibog and Dr. George
  • Professional and polite support staff when encountered directly in-office
  • Convenient access to services including walk-ins and TeleHealth
  • Clean and spacious office environment

Common complaints

  • Excessive wait times, including long delays after scheduled appointment times
  • Difficulty reaching the office via phone, including long hold times and disconnections
  • Issues with staff responsiveness and professionalism
  • Concerns regarding misdiagnosis or quality of care from specific providers

"I like my doctor here. However, I have never waited less than an hour no matter what time I schedule. ... The inability to maintain scheduled times appears unprofessional and suggests little respect for patient’s time."

LocalityBiz Review (Tirzah Antoine)

"Dr Mary Manibog is the best doctor in Greenbelt. She is knowledgeable and patient. Busy practice but you have to be patient with the staff. They are all kind and helpful. Office is clean and spacious."

LocalityBiz Review (Marlowe Mings)

"My current pcp is Dr Craig Washington who has not turned out to be a very good doctor. He is dishonest has difficulty reading a diagnosis from a specialist and doesn't listen to his patients."

Yelp Review (Brenda S.)

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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