AmerisourceBergen Corporation ABC is scheduled to release first-quarter fiscal 2021 results on Feb 4, before the opening bell.In the last reported quarter, the company delivered an earnings surprise of 1.1%. Its earnings beat estimates in each of the trailing four quarters, the average surprise being 7.2%.Q1 EstimatesThe Zacks Consensus Estimate for first-quarter fiscal 2021 revenues is pegged at $50.58 billion, indicating an improvement of 5.7% from the prior-year quarter. The consensus mark for earnings stands at $1.94, suggesting growth of 10.2% from the year-ago reported figure.Pharmaceutical Distribution Unit: A Key FactorSustained growth in specialty product sales and expanding customer base at this segment are likely to have benefited the fiscal first-quarter performance. Notably, this segment serves healthcare providers in the pharmaceutical supply channel. Solid organic growth rates in the U.S. pharmaceutical market, population demographics and improving patient access to medical care might get reflected in the to-be-reported quarter’s results.AmerisourceBergen Corporation Price and EPS Surprise AmerisourceBergen Corporation price-eps-surprise | AmerisourceBergen Corporation QuoteIn fact, the Zacks Consensus Estimate for fiscal first-quarter revenues for this segment is pegged at $48.31 billion, suggesting growth of 4.9% from the year-ago reported figure.Moreover, operating income at this segment is anticipated to improve in the mid-single-digit percent range in fiscal 2021. Consequently, this is likely to get reflected in the fiscal first-quarter results.Other Factors to NoteWorld Courier unitThe World Courier unit, in particular, is likely to have contributed to the Other segment’s performance in the fiscal first quarter. During fiscal first quarter, the business was able to provide improved services and navigate the complexity of moving materials worldwide despite the challenging environment, while boosting innovation with clinical trial in at-home settings. Enhancing customer experience through new offerings, technology improvements and delivery of high tax logistics services might have contributed to the fiscal first-quarter performance.The company’s to-be-reported quarter’s results are likely to reflect solid demand for its high touch global specialty logistics.Other SegmentThis segment comprises Global Commercialization Services and Animal Health, and includes World Courier, AmerisourceBergen Consulting and MWI. The segment may have benefited the fiscal first-quarter performance, courtesy of growth across its three operating units — AmerisourceBergen Consulting Services, MWI Veterinary Supply and World Courier segments.Apart from this, the company is likely to have gained from generics growth in the to-be-reported quarter.During fiscal third-quarter of 2020, AmerisourceBergen introduced two new offerings at its MWI Animal Health business, which have been developed to help veterinarians manage the financial impact of COVID-19. The new offerings enable practices to offer flexible financing solutions for clients, thereby lowering the financial burden of both routine and emergency pet care. The offerings have been helping the practices in achieving sustained revenue, long-term client engagement and improved patient outcomes. Hence, new product launches like this one may have contributed to overall results in fiscal first-quarter 2021.Further, adjusted operating expenses in fiscal 2021 are estimated to increase in the mid-single digit percent range. Consequently, the fiscal first-quarter results are likely to reflect this impact.What Our Quantitative Model SuggestsPer our proven model, the combination of a positive Earnings ESP and a Zacks Rank #1 (Strong Buy), 2 (Buy) or 3 (Hold) increases the chances of an earnings beat. This is the case here as you will see.Earnings ESP: AmerisourceBergen has an Earnings ESP of +2.58%. You can uncover the best stocks to buy or sell before they’re reported with our Earnings ESP Filter.Zacks Rank: It carries a Zacks Rank #3.Other Stocks Worth a LookHere are some other medical stocks worth considering as these too have the right combination of elements to post an earnings beat this quarter.Quest Diagnostics Incorporated DGX has an Earnings ESP of +2.08% and a Zacks Rank of 3. You can see the complete list of today’s Zacks #1 Rank stocks here.Becton, Dickinson and Company BDX has an Earnings ESP of +7.46% and a Zacks Rank of 2.Ecolab Inc. ECL has an Earnings ESP of +0.08% and a Zacks Rank of 3.Legal Marijuana: An Investor’s DreamImagine getting in early on a young industry primed to skyrocket from $17.7 billion in 2019 to an expected $73.6 billion by 2027.Although marijuana stocks did better as the pandemic took hold than the market as a whole, they’ve been pushed down. This is exactly the right time to get in on selected strong companies at a fraction of their value before COVID struck. Zacks’ Special Report, Marijuana Moneymakers, reveals 10 exciting tickers for urgent consideration.Download Marijuana Moneymakers FREE >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Ecolab Inc. (ECL): Free Stock Analysis Report Becton, Dickinson and Company (BDX): Free Stock Analysis Report Quest Diagnostics Incorporated (DGX): Free Stock Analysis Report AmerisourceBergen Corporation (ABC): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research