Michael R. Mardiney, MD in Baltimore: An Adult and Pediatric Allergist with Hospital Affiliation
Michael R. Mardiney, MD is a board-certified allergist and immunologist serving adult and pediatric patients across Baltimore, with privileges at Sinai Hospital of Baltimore and a practice rooted in both clinical allergy management and immunotherapy administration.
What This Practice Actually Is
Mardiney operates as a traditional specialty allergist practice, not a primary-care clinic. His scope covers environmental and food allergies, asthma management tied to allergic triggers, immunotherapy (allergy shots and sublingual tablets), and diagnostic testing including skin testing and specific IgE blood work. The practice accommodates both ages, which narrows the field in Baltimore, where many allergists see either adults or children but not both. Affiliation with Sinai Hospital, part of the Sinai Health System, positions referrals and continuity within a larger network but does not obligate patients to use hospital-based imaging or labs.
Services and Insurance
Mardiney's core service is diagnostic allergy testing, typically skin prick testing or intradermal testing for environmental allergens, followed by treatment planning. Immunotherapy (allergy shots) is administered in-office; expect frequent visits during build-up phases (weekly or biweekly) and then maintenance intervals (typically monthly). Sublingual immunotherapy tablets are an alternative for patients who prefer to avoid injections, though these are less commonly offered than shots at Baltimore allergist offices.
Specific pricing is not publicly listed online. Insurance coverage varies sharply by plan: many plans cover diagnostic testing and immunotherapy administration fully or with a standard office-visit copay (typically $20–$50), but some exclude immunotherapy or require prior authorization. Food allergy evaluation and oral immunotherapy (OIT) for food allergy are specialist services that may not be covered by standard plans and carry out-of-pocket costs ranging from $2,000 to $10,000 per year if undertaken. Call the office to confirm coverage for your specific insurance product before scheduling.
New-patient appointment wait times run 4–8 weeks at most Baltimore allergists, including this practice. Verification of current wait times is worth confirming directly.
How This Practice Compares to Other Baltimore Allergists
Baltimore has a moderately concentrated allergist landscape. Larger systems like University of Maryland Medical Center and Johns Hopkins operate multi-provider allergy clinics that offer faster access (sometimes 2–3 weeks) but may require system affiliation or referral protocols. Independent allergists, such as practices in Canton or Fells Point, often offer more flexible scheduling but may have longer waits.
Mardiney's dual-age scope is a practical advantage if your household includes both a child and an adult with allergies. Many allergists in Baltimore specialize by age, requiring separate providers. His Sinai affiliation is neutral for most patients: Johns Hopkins and University of Maryland affiliates are equally robust for referrals and specialist input, but Sinai patients benefit from streamlined internal coordination.
Immunotherapy frequency and maintenance schedules vary by provider protocol. Confirm with Mardiney's office whether the practice uses standard build-up schedules (typically 8–12 weeks to maintenance) or rapid protocols; some practices adjust timing by patient age or response.
Who This Practice Suits and Who It Does Not
Mardiney is well suited for established Baltimore residents with chronic allergic rhinitis, asthma linked to allergen exposure, or allergic dermatitis who want continuity of care and are willing to commit to immunotherapy (which requires 3–5 years of consistent visits). Parents with children who have moderate-to-severe environmental allergies appreciate the single-provider model.
This practice is not ideal for urgent or acute allergy flares; allergist offices do not replace urgent care or primary-care visits for acute respiratory symptoms. Patients seeking cutting-edge food allergy treatment via oral immunotherapy should ask explicitly whether the practice offers this, as not all Baltimore allergists do.
What a First Visit Involves
Plan 60–90 minutes. Expect a detailed history of allergy symptoms, triggers, seasonality, and impact on sleep or daily function. The clinician will perform skin prick testing (allergen extract applied to skin with a lancet prick) or order blood testing if skin testing is contraindicated. Testing results are usually available the same day (skin) or within 1 week (blood). Do not take antihistamines for 5 days before testing, as they suppress skin reactions and invalidate results.
A treatment plan follows: this may include nasal steroid sprays, antihistamines, and a discussion of immunotherapy candidacy. If immunotherapy is chosen, a second appointment is scheduled to begin build-up.
Hours, Parking, and Logistics
Mardiney's office location and hours should be confirmed directly, as these vary and office moves occur. Sinai Hospital has multiple campus locations in Baltimore (Inner Harbor, Northwest); verify which location houses the allergy clinic. Sinai parking is typically free for office-visit patients at most campuses.
Public transit access depends on the specific office address. If located on Sinai's main campus near downtown, the Red Line and multiple bus routes serve the area.
Why This Practice Matters in Baltimore
Mardiney fills a practical gap in Baltimore's allergy landscape by seeing both children and adults in one practice, reducing coordination burden for families, and maintaining direct Sinai Hospital ties that streamline referrals for complex cases.
