Our People

Meet the Sage Urgent Care Team

Sage Urgent Care is staffed by two board-certified emergency medicine physicians — Vadim Fradlis, DO and Jacob Silberstein, MD. Both completed their residencies at high-volume New York City and Long Island academic emergency departments before bringing that training to walk-in care in Berkeley Heights. We chose to practice here because we believe great medical care should feel personal — even when you've never met your doctor before.

Every visit at Sage is staffed by one of our licensed physicians, supported by trained medical assistants and a registered radiology technologist for on-site X-rays. We don't outsource diagnosis to AI, and we don't rush visits to hit a quota. You get the time you need.

Sage Urgent Care is an independently owned and operated medical practice — not affiliated with any prior business that may have occupied this location. We opened our doors to provide quality walk-in care to the Berkeley Heights community on our own terms, with our own clinical standards and patient experience.

Our Providers

Vadim Fradlis, DO

Physician — Emergency Medicine

Dr. Fradlis brings emergency medicine training to every walk-in patient at Sage. After completing his residency at St. Barnabas Hospital in the Bronx — one of New York City's busiest Level 1 trauma centers — he developed a clinical approach focused on accurate diagnosis, careful triage of what truly needs higher-level care versus what can be managed in the outpatient setting, and clear patient communication.

His emergency medicine background means he's seen the full spectrum of acute illness and injury, from minor sprains to life-threatening presentations. That depth informs every walk-in visit: Dr. Fradlis is conservative about ordering imaging or labs that won't change management, but doesn't hesitate to act decisively when red-flag symptoms are present. He believes that the best urgent care visit is one where the patient leaves knowing exactly what's wrong, what to do next, and what warning signs would mean coming back.

Clinical interests: Critical care and resuscitation, procedural medicine, point-of-care ultrasound, sports medicine, and the range to work across the whole spectrum of medicine — from a routine sore throat to the patient who needs to be moved to an ER within the hour. Also pediatric urgent care, musculoskeletal injuries and fracture care, respiratory illness in adults and children, and tick-borne disease (common in the wooded NJ communities Sage serves). Patients who speak Russian appreciate that Dr. Fradlis can take a full history and explain treatment plans in their native language.

Medical Education: Doctor of Osteopathic Medicine, New York College of Osteopathic Medicine, 2011
Residency: Emergency Medicine, St. Barnabas Hospital (Bronx, NY)
Board Certifications: American Board of Emergency Medicine
Languages: English, Russian

Read Dr. Fradlis’s full profile →

Jacob Silberstein, MD

Physician — Emergency Medicine

Dr. Silberstein trained in emergency medicine at North Shore University Hospital — Northwell Health's flagship academic medical center on Long Island — where he developed expertise in the full spectrum of acute care, from minor injuries and infections to more complex presentations that require careful evaluation. Northwell's emergency medicine residency emphasizes evidence-based practice and the kind of careful clinical decision-making that translates directly to urgent care work.

He focuses on the kinds of issues that bring families into urgent care: fractures and sprains, lacerations needing stitches, occupational injuries, and the everyday illnesses that don't wait for a primary care appointment. His goal at every visit is to combine emergency-trained clinical judgment with the time and attention an urgent care setting allows — something that's often missing in fast-paced ER environments.

Clinical interests: Critical care and resuscitation, procedural medicine — laceration repair, splinting, abscess drainage and foreign-body removal — point-of-care ultrasound, sports medicine, and comfort across the whole spectrum of medicine, from the everyday complaint to the genuinely sick patient. He routinely treats high school and college athletes from Berkeley Heights, Summit, Watchung Hills Regional, Westfield and surrounding districts, and also handles workers compensation injuries, DOT and pre-employment physicals, and pediatric acute illness.

Medical Education: Doctor of Medicine, SUNY Downstate College of Medicine, 2015
Residency: Emergency Medicine, North Shore University Hospital / Northwell Health (Manhasset, NY)
Board Certifications: American Board of Emergency Medicine
Languages: English

Read Dr. Silberstein’s full profile →

Meryl Leshansky, PA-C

Physician Assistant — Emergency Medicine & Urgent Care

Meryl brings a decade of emergency department and urgent care experience to Sage. She began her career as an emergency medicine provider in two high-acuity metropolitan emergency departments — Mount Sinai Medical Center in New York and Thomas Jefferson University Hospital in Philadelphia — caring for patients across the full lifespan, from routine complaints to critically ill presentations.

She has since spent years in high-volume walk-in care, including a stretch as the solo provider in a busy Philadelphia urgent care seeing roughly sixty patients in a twelve-hour shift, and most recently in a large urgent care group treating patients from infancy through old age. That kind of volume builds a particular skill, and it is the one urgent care depends on most: quickly recognizing which patient in a full waiting room is the one who cannot wait.

Meryl is procedurally strong — laceration repair, incision and drainage, splinting and casting, ultrasound-guided IV access, joint aspiration, and point-of-care testing. She also spent nearly three years in an ambulatory surgical center, first-assisting in the operating room and managing post-operative wound care and scar revision. For a parent whose child has just split a chin open, that surgical suturing background is the difference between a closed wound and a well-closed one.

She has precepted medical, NP, and PA students, and has taught suturing skills labs and ultrasound-guided IV technique at regional emergency medicine conferences. At Sage she works alongside the practice’s board-certified emergency physicians.

Clinical interests: Emergency and acute care across all ages, procedural medicine and wound closure, pediatric urgent care, musculoskeletal injury, and acute illness in adults and children.

Education: Master of Science, Physician Assistant Studies, Rutgers, the State University of New Jersey (formerly UMDNJ), 2015; Bachelor of Arts, Indiana University Bloomington, 2011
Certification: National Commission on Certification of Physician Assistants (NCCPA), certified since 2015; Advanced Cardiac Life Support (ACLS); Basic Life Support (BLS)
Licensure: New Jersey, New York, Pennsylvania
Professional Affiliations: American Academy of Physician Associates (AAPA); Society of Emergency Medicine Physician Assistants (SEMPA)

Read Meryl’s full profile →

Why Emergency Medicine Training Matters in Urgent Care

Both physicians at Sage Urgent Care are board-certified by the American Board of Emergency Medicine (ABEM). That's worth understanding, because not every urgent care clinic is staffed by emergency-medicine-trained physicians — many are staffed entirely by family medicine or internal medicine physicians, and some run without a physician on site at all.

Emergency medicine training is specifically designed for the kind of work urgent care does well:

Triaging the undifferentiated patient. EM physicians are trained to evaluate patients who walk in without a known diagnosis. That's most urgent care visits.
Recognizing the dangerous mimics. A "sore throat" can be strep, mono, or — rarely — a peritonsillar abscess that needs drainage. Chest pain can be musculoskeletal or it can be cardiac. EM training emphasizes the systematic ruling-out of dangerous causes before reassurance.
Procedural fluency. Laceration repair, splinting, joint reduction, abscess drainage, foreign body removal — these are core EM skills, not specialty referrals.
Knowing when to send to the ER. The hardest call in urgent care isn't "what's wrong" — it's "does this need a higher level of care?" EM-trained physicians make that judgment routinely.

For patients, this means you're seeing physicians who have evaluated thousands of acute presentations in trauma centers and high-volume EDs. That experience translates into faster, more accurate diagnosis and fewer unnecessary referrals or specialist visits.

Our Approach

We treat urgent care as the front line of accessible healthcare for the Berkeley Heights community. That means:

Same-day clarity. You leave knowing what's wrong, what we did about it, and what to watch for.
Records continuity. With your permission, we forward your visit summary to your primary care doctor so your medical record stays current.
Honest pricing. We give self-pay patients a clear price upfront. We don't run unnecessary tests.
Time when you need it. Average visit length is 30–45 minutes from check-in to walk-out, but we don't watch the clock if your situation needs more.

Medical Review & Editorial Standards

Sage Urgent Care is an independently owned and operated walk-in clinic. The health articles and condition guides across this site are written and medically reviewed by Dr. Fradlis and Dr. Silberstein, and updated as clinical guidance changes — the same physicians who would evaluate you at the front desk. When an article notes “medically reviewed by,” it links back to this page for exactly that reason.

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Walk in any day, 8 AM to 8 PM. No appointment needed.

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Walk-In Urgent Care Serving Union County, NJ

Sage Urgent Care provides walk-in medical care for Berkeley Heights, Summit, New Providence, Murray Hill, Chatham, Springfield, Mountainside, Watchung, Stirling, Gillette, Warren, Scotch Plains, Westfield, Millburn, Short Hills, and surrounding Union County, Somerset County, and Morris County communities. Walk in 7 days a week, 8 AM to 8 PM — no appointment needed.