Mark S Gloger, MD in Baltimore: Gastroenterology with Board Certification in Internal Medicine
Mark S Gloger is a gastroenterologist and internist operating in Baltimore whose practice combines diagnostic and therapeutic endoscopy with consultative internal medicine, treating conditions from reflux and inflammatory bowel disease to colon cancer screening. He holds Board Certification from the American Board of Internal Medicine and membership in the American Gastroenterological Association, placing him among the credential-verified specialists in a city where gastroenterology demand consistently outpaces appointment availability.
What the practice actually is
Gloger works as a solo practitioner within Baltimore's gastroenterology landscape, where the typical wait for a new patient colonoscopy ranges from 6 to 12 weeks depending on provider and screening volume. Unlike multispecialty practices or hospital-affiliated groups that handle high-volume referral networks, this practice operates at a smaller scale, which can mean shorter wait times for non-emergent procedures and sustained continuity with one physician rather than rotation among providers. His dual credential in internal medicine and gastroenterology allows him to manage both the acute endoscopic need (bleeding, obstruction, polyp removal) and the underlying medical context (medication interactions, comorbidity) without handoff.
Services and consultation approach
The practice centers on upper endoscopy (EGD), colonoscopy, and flexible sigmoidoscopy, with therapeutic capabilities including polypectomy, biopsy, and bleeding management. Consultative work includes evaluation of chronic diarrhea, constipation, GERD, dyspepsia, and inflammatory bowel disease. Pricing for procedures varies by insurance and procedure type; a screening colonoscopy with insurance typically carries patient responsibility between $100 and $500 out-of-pocket depending on deductible and coinsurance. Therapeutic procedures (polyp removal, biopsy) incur higher facility fees. Because procedure costs depend heavily on insurance plan and whether pre-authorization is required, verify your specific out-of-pocket amount with your insurer before scheduling. Consultation-only visits (for diagnosis or medication management without endoscopy) are billed as established or new-patient office visits, usually $150 to $300 before insurance adjustment.
How Gloger compares to other Baltimore gastroenterologists
Baltimore has significant gastroenterology representation through academic centers (Johns Hopkins, University of Maryland Medical Center) and independent practitioners scattered across the city. Academic-center gastroenterologists often carry longer wait times because they manage teaching obligations and complex cases, though they may offer access to experimental therapies or research studies. Large independent groups (such as those operating multiple endoscopy centers) can schedule faster but may rotate patients among several physicians. Gloger's solo practice trades high throughput for continuity; if you value seeing the same doctor across multiple visits and procedures, this is a practical advantage. If your insurance has a specific network requirement or you need urgent access on short notice, a larger group or hospital-affiliated practice may schedule faster. For straightforward screening or management of uncomplicated reflux or IBS, Gloger's solo availability is competitive with group options.
Who this suits and who it does not
This practice works well for established patients with chronic gastrointestinal conditions who benefit from consistent relationships and for patients with internal medicine complexity (multiple medications, comorbid heart or kidney disease) where endoscopy needs integration with overall health management. New patients seeking a single physician across gastroenterology and some primary medical guidance find value here. Patients requiring urgent same-day or next-day endoscopy (acute bleeding, severe obstruction) are better served by hospital-based programs where interventional radiology and ICU backup are on-site. Those covered by insurance plans that require care within narrow networks or specific facilities should confirm in-network status before committing time to scheduling.
What the first visit involves
New patients typically complete intake paperwork covering medical history, current medications, and insurance details, followed by a consultation visit where Gloger takes a focused history, performs a physical exam, and outlines diagnostic or therapeutic options. If endoscopy is planned, scheduling usually requires a separate pre-procedure visit or phone call to review risks, obtain informed consent, and discuss sedation preferences (conscious sedation with midazolam and fentanyl is standard for colonoscopy; upper endoscopy may be done with topical anesthesia alone or sedation depending on indication and patient preference). Screening colonoscopy requires a bowel prep protocol, either a split-dose or evening-prior polyethylene glycol preparation, with written instructions provided at least one week before the procedure.
Hours, location, and logistics
Office hours and parking details should be confirmed directly with the practice, as gastroenterology office hours often run mid-morning through early afternoon to accommodate procedure scheduling. Endoscopy procedures are typically performed at a licensed endoscopy center; verify whether Gloger's procedures happen in an office-based suite or at a separate facility, as this affects travel logistics and recovery arrangements (driving restrictions apply for 24 hours after sedation). Insurance pre-authorization is usually required for screening and diagnostic procedures; the office typically handles this, but confirm at the time of scheduling.
Gloger's board-certified, solo-practice model serves Baltimore patients who need sustained continuity in gastroenterology care and appreciate the integration of internal medicine perspective without navigating a large system.
