My first territory came with a long printed list of doctors and one instruction: see them all. I tried. By the end of month 2 I'd met almost everyone once, and the numbers hadn't moved.
It took me years, and a lot of bad Mondays, to learn what nobody said in week 1. A territory isn't a list you work through. It's a plan you build, and you rebuild it every cycle. I've gone from rep to country manager over 20 years, and the reps I've seen grow fastest are rarely the best talkers in the doctor's room. They're the ones who plan the week before they start it.
Step 1 of the Pharma Career Ladder is planning your territory. Here's how I'd teach it to a new rep in the car with me.
Start with who, not how many
Vilfredo Pareto's old 80/20 observation holds up well in the field. A small group of doctors usually carries most of the potential, and your first job is to find them. I look at 4 things for each doctor: how many relevant patients they see, how much of their prescribing in the class you already have, how often they'll really see you, and whether their use is growing or falling.
High potential with low share goes to the top. Low potential with high share needs maintenance, not more calls. And watch one trap. Many call plans quietly follow politeness. The doctor with time for coffee gets visited every week, while the busy specialist with a full waiting room gets visited when it's convenient. A friendly call feels productive. Often it isn't.
Protect the A-list like it's the job
Once you have your A-list, frequency matters more than anything clever you say. Hermann Ebbinghaus published his work on forgetting in 1885. He showed that new information fades fastest soon after we learn it, and that repetition slows the fade. A doctor isn't a memory experiment, but miss a cycle with a top prescriber and you'll feel it. You come back and start again.
When a month gets heavy, reps usually cut the hard calls and keep the easy ones. That's backwards. Look for anyone you've missed 2 cycles in a row. That doctor has already given your space to someone else.
Build a week that survives Monday
A route plan that looks perfect on a map often breaks before lunch. Build it in layers. Cluster the targets, add the hours each doctor really sees reps, then add the traffic you know about: the 7:30 school run and the evening peak. Then leave 1 gap. A plan with no room for a late doctor or a closed road falls apart by 11:00.
The week works the same way. Book your top-doctor calls first, keep half a day free for the stock problem that always lands on Monday, and replan on Wednesday. Move what slipped. Don't drop it.
Know which game you're in
Most of us cover a hospital and a set of private clinics in the same week, and they don't work alike. In a hospital you're selling into a system: the formulary committee, the head of department, the hospital pharmacist, procurement. Miller Heiman's Strategic Selling describes several buying influences behind 1 decision, and I keep a simple map like that for every key account. The useful question never changes. Who on this map have I never met?
In private clinics you're working on habit, call by call. The pharmacy is part of your territory too. A doctor can say yes and the patient can still leave with something else. Walk the pharmacies near your key clinics, know each pharmacist by name, and ask what patients got when your product was out.
Read your numbers, and your street
When a month goes flat, check your own field numbers before blaming the market: coverage, frequency on your top 20, and calls with a clear ask. Then read them against sell-out in your area, the units moving from distributors to pharmacies. Sell-in is what was shipped to the distributor. Distributor inventory is what's sitting in their warehouse. Those are 3 different numbers, and sell-out is the closest of them to what's reaching patients.
The territory also talks. A new doctor joins, a clinic changes its hours, an insurance plan gets dropped, a shelf goes empty. Write 1 line after each call, in the car, before the next door, and share the useful ones with your team.
If the territory is new to you, don't try to prove yourself in week 1. Learn the history, meet the A-list in week 2, build a steady route in week 3, then sit with your manager in week 4 with 3 findings. Doctors want to know you'll still be there in 6 months.
Your checklist for this week
- Rank your top 20 doctors by patient potential and current share
- Mark every A-list doctor you've missed 2 cycles running, and book them first
- Add real clinic hours to your route, with 1 gap each day
- Keep half a day free, and replan on Wednesday
- Visit the pharmacies near your 3 biggest clinics and ask about stock
- Pick 1 key account and write down who you've never met
- Write 1 observation after every call
That's Step 1. Next week Step 2 begins: your numbers and forecast, starting with how to read your own report before your manager does.