Earlene L. Posselt is an internal medicine physician practicing in Oklahoma City who accepts new adult patients and works with most major insurance plans. Internal medicine doctors manage chronic conditions, preventive care, and acute illness in adults and typically serve as the first point of contact for diagnosis and referral to specialists.
Posselt provides office-based internal medicine care, meaning routine visits for established and new patients take place in an outpatient clinic rather than a hospital setting. Her scope covers routine physicals, management of conditions like hypertension and diabetes, medication adjustment, and coordination of specialty referrals. She does not perform procedures or provide urgent walk-in care; patients schedule appointments in advance.
Internal medicine office visits in Oklahoma City typically range from $100 to $300 without insurance, depending on visit complexity and whether it is a new-patient evaluation (longer, more thorough, and more expensive) or a follow-up. Verify current fees with the office directly, as rates do change. Most insurance plans, including Medicare and the major commercial carriers, are accepted in internal medicine practices across the city. Copays for covered patients usually run $20 to $50 per visit.
New-patient evaluations typically include a full history, physical exam, and baseline lab work (blood draw, urinalysis) to establish a baseline health picture. Follow-up visits for established patients are shorter and focus on monitoring specific conditions or addressing acute concerns.
Oklahoma City has a range of internal medicine options: large multispecialty groups (like Mercy Health clinics across the metro area), academic-affiliated practices (through OU Health), and private solo or small-group practices. Posselt operates as an individual practitioner, which often means shorter wait times for appointments and more continuity with one doctor, but may offer fewer resources in-house than a larger system. For patients who value long-term relationships with a single physician and dislike clinic rotation or frequent referral between departments, a solo internal medicine doctor is typically the better choice. For patients who want broad specialty access without leaving the same building, a multispecialty group is more convenient.
Posselt is well suited to adults (not pediatric patients) who need a primary-care physician for ongoing management, have insurance or can pay out-of-pocket, and can schedule appointments in advance. She is not a walk-in option for acute illness and does not handle emergency conditions; patients with chest pain, severe shortness of breath, or other emergencies should go to an ER instead. Patients without insurance or who lack transportation to a fixed clinic location may find it difficult to maintain regular office visits.
At an initial appointment, bring insurance cards, a government-issued ID, a list of current medications and supplements (or the bottles themselves), a record of past surgeries and hospitalizations if available, and a list of questions. The visit will start with paperwork (medical history questionnaire, consent forms, insurance verification). A nurse will record vital signs (blood pressure, temperature, weight). The doctor will take a detailed history, perform a head-to-toe exam, and likely order initial lab work. The appointment usually lasts 45 minutes to an hour. A follow-up visit to discuss results and establish a treatment plan may be scheduled within one to two weeks.
Confirm current hours and office address by calling ahead or checking with her office directly, as physician practices sometimes consolidate or relocate. Most internal medicine offices in Oklahoma City operate weekdays 8 a.m. to 5 p.m., with limited or no weekend hours. Parking is usually available at the office site, either in a lot or street parking. Public transit in Oklahoma City is limited; most patients drive.
Posselt serves as a stable primary-care option for adults in Oklahoma City who prefer continuity with one physician and have the ability to schedule appointments in advance.
