KDP categories · Top KDP authors
Nathan Caldwell: Amazon KDP author data
As of Nov 6, 2026, Nathan Caldwell has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #21), mostly in Medical Technology, Emergency Medical Services, Medicaid & Medicare.
| Median price | $159 |
|---|---|
| Price range (middle 50%) | $158 – $160 |
| Median reviews | 3 |
| Total reviews | 6 |
| New books (30 days) | 6 |
| Breakout books (30 days) | 3 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $159, 197% above the median of their main category, Medical Technology.
- 6 new books in the last 30 days, 3 of them broke into a Best Sellers list.
Nathan Caldwell's best-ranked books
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Clinical Guide To Cardiac Amyloidosis: Evidence-Based Approaches for Early Recognition, Advanced Imaging, Targeted Therapy, and Long-Term Care
by Nathan Caldwell
- Price$161
- Reviews-
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Principles of Clinical Cardiology: Evidence-Based Approaches for Cardiac Assessment, Diagnostic Interpretation, Therapeutic Strategies, and Patient Care
by Nathan Caldwell
- Price$189
- Rating5.0
- Reviews2
-
Handbook Of Nuclear Medicine: Advanced Imaging Applications for Accurate Diagnosis, Molecular Evaluation, Therapeutic Planning, and Patient Care
by Nathan Caldwell
- Price$159
- Reviews-
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Handbook Of Hospital Medicine: Evidence-Based Approaches for Inpatient Care, Clinical Decision-Making, Patient Safety, and Leadership
by Nathan Caldwell
- Price$158
- Rating5.0
- Reviews4
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Handbook Of Cardiovascular Medicine: Evidence-Based Insights into Pathophysiology, Diagnosis, Therapeutics, Prevention, and Contemporary Clinical Research
by Nathan Caldwell
- Price$159
- Reviews-
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High-Density Brain-Computer Interfaces & Neural Telemetry: Intracortical Arrays, Real-Time CMOS Signal Processing, Closed-Loop Neuromodulation, and Biocompatible Implantation
by Nathan Caldwell
- Price$7.99
- Reviews-
Main categories
FAQ
How many books does Nathan Caldwell have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Nathan Caldwell publish in?
Their books chart most often in Medical Technology, Emergency Medical Services, Medicaid & Medicare.
How does Nathan Caldwell price their books?
The median price is $159; half of the books cost $158–$160.
Has Nathan Caldwell released new books recently?
6 new books in the last 30 days, 3 of which reached a Best Sellers list.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.