
Loft Living. Longevity Focused.
Callowhill is industrial, spacious, and cool. Your doctor should match that energy. We bring modern medicine to the Rail Park.
Fishtown Medicine is a virtual-first primary care practice serving Callowhill and the Loft District. We are a short ride up the Market-Frankford Line from Spring Garden Station, about a mile and a half from the Rail Park. Members get same-day text access to Dr. Ash, video visits, and home visits inside 19123 when an in-person exam is needed.
Primary Care in Callowhill (The Loft District), Philadelphia

Fishtown Medicine | Neighborhoods
What anchors your week in Callowhill?
Callowhill (also known as the Loft District or the Eraserhood) sits between Spring Garden and Vine, with the Rail Park as its spine. Our 19123 members tend to live in industrial loft conversions and work in small creative or tech businesses, and the rhythms reflect that. The Rail Park morning. The reclaimed elevated section gives Callowhill a single linear park that defines the neighborhood's social geography. Dog walks at 7 am, lunchtime strolls, the after-work decompression. Most of our Callowhill members live within a five-minute walk of the trail entrance, and the movement plans we build tend to use the Rail Park as the default. The loft-conversion work-from-home rhythm. Goldtex, the Hanover, the older industrial buildings off Ridge and 13th converted to apartments. Big windows, hardwood, freelancers and small-company teams on Zoom all day. We see a lot of work-from-home metabolic drift here, the kind that creeps up when your commute is from the bed to the desk to the kettle. We work that math directly. Underground Arts and the 13th Street nightlife. The converted warehouse venue below the streets. The smaller bars and galleries on 13th. A meaningful share of our Callowhill members are in or around the arts, and the late-night schedule isnt a moral failing; its the job. We text back at the hours that schedule actually has. The Callowhill pattern is loft-living, Rail-Park-anchored, and creative-class. We adapt to it.How do I get to Fishtown Medicine from Callowhill?
You usually do not need to. Most care happens by text and video. When an in-person exam is clinically necessary, Dr. Ash comes to your loft for a home visit inside 19123. If you ever want to meet in person on neutral ground, Fishtown is one stop east on the Market-Frankford Line (the El) from Spring Garden Station, or a 10-minute drive up Front Street. The walk along the Rail Park toward Spring Garden is also a nice 25-minute stretch on a clear day.Where do Callowhill members go for labs and imaging?
For routine bloodwork, the closest options are:- Quest Diagnostics at 1601 Cherry Street (about a 10-minute walk).
- LabCorp locations in Center City and on Spring Garden.
- Mobile phlebotomy to your loft when you do not want to leave the building.
What about parking and street access?
Callowhill is one of the easier loft neighborhoods for parking, but most of our members never park anywhere because most visits are virtual. If you do drive to a lab or specialist:- Street parking around Callowhill is realistic outside rush hour.
- The Convention Center garages on Arch Street are five minutes south.
- Rideshare to a Center City specialist is usually under 10 minutes.
Is virtual primary care actually good enough for the Loft District?
Yes, for the vast majority of primary care. We can diagnose and treat sinus infections, UTIs, rashes, anxiety, insomnia, GERD, blood pressure, lipids, prediabetes, hormone questions, and most of what walks into a 15-minute office visit. We bring the in-person exam to your loft when the case actually requires hands-on assessment.Actionable Steps for Callowhill Residents
- Book a free 20-minute warm invitation call. No pressure, no sales pitch. We talk through your health story and decide together if this is a fit.
- Send your records. We import your last labs, imaging, and specialist notes so we are not starting from zero.
- Save Dr. Ash's number. Members text directly. The Rail Park crowd loves not having a portal password.
Deeper Questions for Callowhill Loft Dwellers
I have a chronic condition (high blood pressure, anxiety, GERD). How does this work in Callowhill?
We manage most chronic conditions inside the membership, including hypertension, anxiety, depression, GERD, prediabetes, lipid disorders, hypothyroidism, and chronic insomnia. You get more time, more touch points, and continuity with the same physician. We do not "turf" you to a specialist for things primary care should handle.Are there health concerns specific to Callowhill lofts?
Older industrial buildings can have legacy issues worth checking:- Lead paint and lead pipes in pre-1978 conversions. We can order a blood lead level if you have any concern, especially if you are planning to conceive.
- Indoor air quality in tightly sealed conversions. We talk through ventilation, mold testing, and HEPA filtration as part of a full primary care assessment.
- Sound exposure near the El tracks and the Vine Street Expressway. Chronic noise affects sleep architecture and cortisol. We address it directly.
What about air quality near I-676 and the Vine Street Expressway?
Callowhill borders the Vine Street Expressway, and the southern edge of the neighborhood sees real traffic-related air pollution. If you have asthma, allergies, or unexplained chronic cough, we screen for it, run targeted labs, and talk about practical mitigation (HEPA, route choice, exercise timing).Is Callowhill walkable enough for daily exercise?
Walk Score puts Callowhill in the high 90s. The Rail Park, the Schuylkill River Trail (a 15-minute walk west), and the Reading Viaduct loop give you real options. For climbers and lifters, the Movement Rock Gym at 2950 American is a 10-minute ride up the American Street corridor and a popular daily anchor for several of our members. We use that infrastructure when we build movement plans, not generic "walk 30 minutes a day" advice.I work from home in a loft. How do I prevent the work-from-home crash?
This is one of our most common Callowhill conversations. We focus on:- Light exposure: bright morning light through those big loft windows is your friend.
- Movement micro-doses: a 5-minute walk on the Rail Park between meetings is more useful than one 60-minute gym session.
- Real lunch: not a granola bar at the keyboard.
- Sleep architecture: tracked with Oura or Apple Watch, not guessed at.
How does Fishtown Medicine compare to a Penn or Jefferson primary care office?
Penn and Jefferson are excellent for specialty and hospital care. Their primary care clinics are run on insurance economics, which means 12 to 15 minutes per visit and weeks-long waits. We are direct primary care: 60 to 90 minute first visits, same-day text access, no rotating residents. We coordinate with Penn and Jefferson specialists when you need them.I want an executive physical. Can I get one in Callowhill?
Yes. Our annual deep-dive physical includes advanced lipidology (ApoB, Lp(a)), insulin sensitivity, hormone panels (testosterone, thyroid, cortisol), VO2 max guidance, body composition (DEXA referral), and a written 12-month plan. Most of it is done over video and at your loft, with one lab visit at Quest or by mobile draw.I am a freelancer or founder without a traditional employer plan. Does this work for me?
This is one of our most common Callowhill profiles. Membership replaces the "I just need a real doctor" piece for self-employed people. You still carry catastrophic insurance for ER, hospital, and specialist costs. The math usually works in your favor.School or sports physicals for older teens?
We see adults 18 and older. For your teenagers, we recommend a pediatric or family medicine practice. We are happy to share names of practices we trust nearby.I tend to put my health off. How does that change here?
Most of our members have done that. The shift is the friction: when your doctor is one text away and there is no waiting room, you actually deal with the small things before they become big things. That is the whole point of the model.What happens if I move out of Pennsylvania?
We are licensed in 42 states. If you move, we usually keep you. If we are not licensed in your new state yet and you want to stay, we add it. Continuity is the point.Meet Your Physician
Ashvin Vijayakumar MD (Dr. Ash) is a board-certified internal medicine physician based in Philadelphia. He built Fishtown Medicine to bring loft-district neighborhoods like Callowhill the kind of relationship-based, modern primary care that big systems cannot deliver in a 15-minute slot.Frequently Asked Questions
Common Questions
Still have a question?
He answers personally. Usually within a few hours.
Related Intelligence

Longevity Strategies | Fishtown Medicine
Strategies to extend your healthspan and optimize lifespan in Philadelphia.

Metabolic Health
Why you feel tired at 3 PM, and how to fix it.

Philadelphia | All Neighborhoods
Modern primary care for all of Philadelphia. Direct text access to Dr. Ash, virtual visits, and home visits across the city. Born in Fishtown, serving every neighborhood.
Talk it through with Dr. Ash.
If anything you read here raised a question, this is a free 20-minute Warm Invitation Call. Pick a time and we’ll work through it together.
Loading scheduler...
Having trouble with the scheduler? Book directly on Dr. Ash’s calendar