Medical and Biotech Conferences in Los Angeles and Orange County 2027

Medical and Biotech Conferences in Los Angeles and Orange County 2027

Los Angeles and Orange County host a busy mix of medical society meetings, medtech shows and life science partnering events. The Los Angeles Convention Center, the Anaheim Convention Center and a handful of hotels in Long Beach, Beverly Hills, Irvine and Dana Point bring in clinicians, researchers, investors and industry teams from across the US. For anyone selling into oncology, immunology, laboratory medicine or medical devices, the region is worth a place on the 2027 plan.

This guide lists the main medical and biotech conferences in Los Angeles and Orange County for 2027, with dates and venues checked against each organizer’s own website on November 9, 2026. Where an organizer has not yet published 2027 dates, we say so and give the most recent edition instead. It also covers how the Southern California corridor links to San Diego, about two hours south, so you can plan one West Coast trip around several meetings.

The guide does not repeat San Diego events. For those, see our San Diego biotech and life science events guide.

Key takeaways

• Spring is the busiest period. From late February to mid-May 2027, Los Angeles hosts AACR Immuno-Oncology, the SIR Annual Scientific Meeting, the ACP Internal Medicine Meeting, IMMUNOLOGY2027 and the AATS Annual Meeting.
• Orange County leans toward medtech and investment: MD&M West in Anaheim, LSI USA ’27 in Dana Point and Octane’s Medical Innovation Forum in Irvine.
• Laboratory and diagnostics audiences gather at APHL 2027 (May, Anaheim), APIC27 (June, Los Angeles) and AABB 2027 (October, Anaheim).
• Immuno-oncology and biomarker teams can pair a Los Angeles trip with ImmunoMark Summit San Diego on February 10–11, 2027.
• Dates were checked on official organizer sites. Events marked “2027 dates not yet announced” have no published 2027 date yet.

Los Angeles and Orange County medical and biotech conference calendar 2027

Several large national meetings rotate between cities, so a society that met in Los Angeles or Anaheim in 2026 may be elsewhere in 2027. Only meetings with a confirmed 2027 Southern California location are listed above, plus two recurring events whose 2027 dates are still to come. For the national picture, see our oncology conferences calendar and our list of biotech conferences in 2027.

Event notes by season

February and March: oncology, immunology and medtech

Rare Cancer Conference, Los Angeles is a one-day continuing education meeting run by Binaytara at The Westin Long Beach. It is aimed at oncology clinicians and covers rare tumor types through lectures, case discussions and panels.

MD&M West is a large medical device engineering show. It combines medtech, automation, design and manufacturing sectors on one floor in Anaheim, so it suits component suppliers, contract manufacturers and engineering teams more than lab or diagnostics buyers.

AACR IO 2027 returns to Los Angeles for the third conference in the series. The program runs from basic cancer immunology to translational and clinical immunotherapy, and the organizing committee includes UCLA researchers. For IO biomarker teams this is the most closely matched meeting in Los Angeles in 2027.

LSI USA ’27 in Dana Point is a curated partnering and investment summit for emerging medtech companies. SIR 2027 brings interventional radiologists to the Los Angeles Convention Center, with interventional oncology as one strand of the program.

April and May: the clinical society peak

April and May are dense. The California Anesthesia Conference runs at the Disneyland Hotel, followed by the ACP Internal Medicine Meeting in Los Angeles and Pri-Med West in Anaheim, both broad clinical education meetings for physicians and other clinicians. IMMUNOLOGY2027, the annual meeting of the American Association of Immunologists, overlaps with the AATS 107th Annual Meeting at the Los Angeles Convention Center.

Investor and executive audiences meet at the Milken Institute Global Conference in Beverly Hills and the SoCalBio Investor & Partnering Conference, which showcases emerging companies from Los Angeles, Orange County and nearby communities. The month closes with APHL 2027 at the Anaheim Marriott, where public health laboratory leaders review testing, surveillance and lab technology.

June to October: infection prevention, transfusion and medtech investment

APIC27 brings infection prevention professionals to Los Angeles in June. AABB 2027 returns to Anaheim in October for transfusion medicine, blood banking and cellular therapies. Octane’s Medical Innovation Forum in Irvine has run each autumn; check for the 2027 date before planning around it. Biocom California’s Greater Los Angeles CEO Summit is open to life science CEOs only.

Why Los Angeles and Orange County matter for diagnostics and tools companies

Greater Los Angeles combines large academic medical centers, NCI-designated cancer centers and a growing startup base, while Orange County, centered on Irvine, has a long medtech and device manufacturing history. Biocom California now has a Los Angeles office and a partnership with Octane in Orange County, a sign that the two counties are being treated as one life science region.

For vendors, that mix means two distinct audiences. Clinical society meetings in Los Angeles reach physicians and hospital labs. Orange County events reach device makers, investors and early-stage companies. A diagnostics or tools company selling into pharma oncology R&D will usually find the most relevant buyers at AACR IO and IMMUNOLOGY2027, then at the specialty biomarker meetings further south in San Diego. Our biomarker and precision medicine conferences guide covers those specialty meetings nationally.

The Southern California corridor: getting from Los Angeles to San Diego

Los Angeles, Orange County and San Diego sit on one coastal corridor, which makes it practical to combine meetings in a single trip.

• By car: downtown Los Angeles to downtown San Diego is roughly two hours without heavy traffic. Irvine and Dana Point cut the drive to well under that.
• By train: the Pacific Surfliner rail service links Los Angeles Union Station with Anaheim, Irvine and downtown San Diego, which suits teams carrying light booth kits.
• By air: short flights connect LAX and John Wayne Airport (Orange County) with San Diego, though door to door the train or car is often similar.

In practice, a Southern California trip could take in the Rare Cancer Conference in Long Beach on February 5, then ImmunoMark Summit San Diego on February 10–11, then AACR IO in Los Angeles at the start of March. If San Diego’s biotech base is new to you, our guide to San Diego oncology biotech companies is a useful starting point, and our San Francisco and Bay Area biotech conferences guide covers Northern California.

How to choose which Los Angeles and Orange County events to attend or exhibit at

With close to twenty relevant meetings in the region, most teams cannot do them all. A few questions narrow the list quickly:

• Who signs your deals? If your buyers are pharma translational, biomarker or clinical development leads, prioritize scientific meetings such as AACR IO and IMMUNOLOGY2027 over broad clinical education meetings.
• Are you after clinicians or industry? ACP, Pri-Med, SIR and AATS reach practicing clinicians. They suit companies with a clinical product, less so those selling research services.
• Do you need meetings or visibility? Large exhibitions give booth traffic. Smaller events with pre-scheduled 1:1 meetings give a confirmed list of conversations before you travel.
• Can you measure it? Set a target for qualified conversations per event and compare it with the full cost of attending. Our sponsorship ROI calculator helps you model that before you commit.
• Can you cluster? Pairing events on the Los Angeles to San Diego corridor spreads travel cost across several meetings.

For a fuller checklist, read how to choose biotech conferences to sponsor.

For sponsors and exhibitors: meeting IO and biomarker buyers in San Diego

If your company sells diagnostics, assays, lab tools, CRO services or data platforms to oncology teams, ImmunoMark Summit San Diego (February 10–11, 2027) is the West Coast launch edition of the series, with 300+ attendees expected. It runs two parallel streams, Next-Gen Immuno-Oncology and Biomarkers & Companion Diagnostics, with keynotes, panels and case studies.

Sponsors and exhibitors meet delegates in pre-scheduled 20-minute 1:1 meetings, with the delegate list shared about 10 days before the event and a wishlist feature to request the people you want to meet. At the London 2026 edition, sponsors held 15–25 meetings each, and 70% of attendees were senior decision-makers. Packages range from Headline, Platinum, Gold and Silver to Exhibitor, exclusive 1:1 meeting bundles and branding.

See the San Diego sponsorship opportunities, or read more on sponsoring an oncology biomarker conference in California and companion diagnostics in San Diego.

FAQs

What are the main medical conferences in Los Angeles in 2027?

Confirmed 2027 meetings in Los Angeles include AACR Immuno-Oncology (February 28 to March 3), the SIR Annual Scientific Meeting (March 20–24), the ACP Internal Medicine Meeting (April 15–17), IMMUNOLOGY2027 (April 30 to May 4), the AATS 107th Annual Meeting (May 1–4) and APIC27 (June 14–16).

Which biotech and medtech events are held in Orange County?

MD&M West runs in Anaheim on February 9–11, 2027 and LSI USA ’27 runs in Dana Point on March 15–19, 2027. Octane’s Medical Innovation Forum is held in Irvine each autumn; its 2027 dates had not been announced when this guide was updated.

Is there an immuno-oncology conference in Los Angeles in 2027?

Yes. AACR Immuno-Oncology 2027 runs on February 28 to March 3, 2027 at the JW Marriott Los Angeles L.A. Live. ImmunoMark Summit San Diego, about two hours south, focuses on immuno-oncology and biomarkers on February 10–11, 2027.

Which Southern California conferences suit diagnostics and lab companies?

APHL 2027 (May 17–20, Anaheim), APIC27 (June 14–16, Los Angeles) and AABB 2027 (October 16–18, Anaheim) reach laboratory and diagnostics buyers. For oncology biomarker and companion diagnostics teams, ImmunoMark Summit San Diego runs a dedicated Biomarkers and Companion Diagnostics stream.

How far is San Diego from Los Angeles for a conference trip?

Downtown Los Angeles to downtown San Diego is roughly two hours by car without heavy traffic. The Pacific Surfliner train links Los Angeles, Anaheim and Irvine with San Diego, and short flights run from LAX and John Wayne Airport.

When is the Milken Institute Global Conference 2027?

The Milken Institute lists its 2027 Global Conference for May 2–5, 2027 in Beverly Hills. It is a cross-sector meeting with health on the agenda, so it suits executives and investors more than lab or R&D buyers.