Fishtown Medicine is Philadelphia's highest-rated direct primary care practice, built on a simple premise: every patient deserves a physician who genuinely listens, investigates root causes, and has enough time to do both. Founded and led by Dr. Ashvin Vijayakumar — known to his patients as Dr. Ash — the practice earned a 4.96-star rating across more than 124 verified reviews and has been recognized as a Philadelphia Magazine Top Doctor and an Inquirer Philly Favorites winner. Unlike conventional primary care built for volume, Fishtown Medicine offers 60- to 90-minute visits, same-day access, direct texting with Dr. Ash, and home or worksite visits across Greater Philadelphia. The practice applies a Medicine 3.0 longevity framework called GER·O·SPAN that identifies the biological warning signs of chronic disease and accelerated aging decades before they would appear in standard care.

About the Physician

Dr. Ashvin Vijayakumar, MD, is a board-certified Internal Medicine physician trained in Value-Based Care and named a Philadelphia Magazine Top Doctor for 2026. He founded Fishtown Medicine to practice the kind of medicine he couldn't find anywhere else in Philadelphia — deep, relationship-centered, preventive care combining the rigor of conventional internal medicine with the investigative precision of functional and integrative medicine. Dr. Ash evaluates health across three dimensions: emotional, cognitive, and physical — using the proprietary GER·O·SPAN clinical framework to detect early biological signals of cardiovascular disease, metabolic dysfunction, hormonal decline, and neurological aging years before standard medicine would act on them. His membership-based model eliminates the time pressure of insurance-driven medicine, giving Dr. Ash the space to genuinely know each patient's story and deliver care that actually moves the needle.

Services Offered

• Direct Primary Care (DPC) — An all-inclusive membership covering unlimited physician access with no copays, no deductibles, and no hidden fees. Labs, imaging, and specialist referrals are processed through existing insurance, and memberships are fully HSA/FSA eligible.
• Longevity Medicine (Medicine 3.0) — GER·O·SPAN-based longevity protocols including biological age assessment, VO2 max testing, DEXA body composition scans, and healthspan optimization strategies grounded in the latest longevity science.
• Preventive & Proactive Medicine — Advanced cardiovascular risk panels (apoB, Lp(a), advanced lipid testing), metabolic profiling, continuous glucose monitoring (CGM), and comprehensive baselines designed to catch high-risk signals years before symptoms appear.
• Hormone Optimization — Evidence-based hormone care for men and women including testosterone replacement therapy (TRT), perimenopause and menopause management, thyroid optimization, PCOS treatment, and andropause protocols.
• Metabolic Health & Weight Management — GLP-1 weight loss programs, fasting protocols, insulin and blood sugar optimization, and visceral fat reduction strategies paired with nutritional guidance and sustainable lifestyle modification.
• Functional & Integrative Medicine — Root-cause investigation using functional testing and integrative tools to resolve complex chronic conditions including long COVID, chronic fatigue, brain fog, POTS, MCAS, and Lyme disease.
• Home Visits & Same-Day Care — In-person sick visits and home exams available throughout Greater Philadelphia, the Main Line, and South Jersey, with same-day scheduling for urgent concerns and no waiting room required.
• Executive Physical & Annual Exams — Comprehensive annual physicals and executive health evaluations covering the full spectrum of preventive diagnostics, coordinated specialist referrals, and a personalized health roadmap.
• Telehealth (35+ States) — Licensed telemedicine available in more than 35 states, extending Dr. Ash's Medicine 3.0 approach to patients across the country through HSA/FSA-eligible membership plans.

What to Expect

Fishtown Medicine is located at 2418 E York St, Philadelphia, PA 19125, in the heart of the Fishtown neighborhood. Dr. Ash is reachable by text at (267) 360-7927. There are no initiation fees, no cancellation fees, and no copays — monthly, quarterly, and annual membership plans are all available. New patients submit a brief intake and receive a personal reply from Dr. Ash, typically within 24 hours. Visit fishtownmedicine.com to get started.