American College of Physicians

What American College of Physicians does

The American College of Physicians (ACP), founded in 1915 and headquartered in Philadelphia, is the largest medical specialty organization in the United States and operates as a private, Pennsylvania-incorporated nonprofit (legal entity: American College of Physicians, Inc.). ACP serves approximately 163,000 members — internal medicine physicians, related subspecialists, residents, fellows, medical students, and non-physician affiliates — across 172 countries, with 84 chapters globally (65 domestic, 3 U.S. military, 16 international). Core products include ACP MKSAP, a digital self-assessment and board preparation platform used by 90%+ of internal medicine residents; Annals of Internal Medicine, a peer-reviewed journal with a 15.3 Impact Factor; an Online Learning Center hosting hundreds of CME/MOC activities (accredited by ACCME for up to 300 AMA PRA Category 1 Credits); DynaMedex clinical decision support provided free to members; and the annual Internal Medicine Meeting with 200+ educational sessions.

Underlying technology spans the Online Learning Center, MyACP member dashboard, MKSAP digital platform, Annals.org journal platform, DynaMedex integration, and the I.M. Osler AI chatbot. ACP's business model rests on tiered annual membership dues (Physicians $324-$565, Residents $145, Non-physician affiliates $155, Medical students free), multi-year MKSAP subscriptions ($415-$1,275), Annals subscriptions ($349-$584), meeting registration fees, course and recording sales, and a one-time $175 Fellowship initiation fee. Distribution is direct-to-consumer via acponline.org and the 84-chapter network; the organization is governed by an elected Board of Regents, has no parent or equity ownership, and wholly owns ACP Services and Annals of Internal Medicine as operating subsidiaries. Recent strategic activity includes the 2026 appointment of Dr. LeRoi Hicks as EVP/CEO, the 2025 digital relaunch of MKSAP, deployment of an AI-powered Obesity Management Conversations Tool, and the release of new breast cancer screening guidelines.

Name

American College of Physicians

Legal name

American College of Physicians, Inc.

Website

https://acponline.org

Company type

Private

Founded year

1915

Operating status

Operating

Headcount range

251–500 employees

Short description

American College of Physicians is the largest U.S. medical specialty organization, providing membership, board preparation (MKSAP), clinical guidelines, the Annals of Internal Medicine journal, CME/MOC, and advocacy to 163,000 internal medicine physicians across 172 countries.

Ownership category

akta.pro rank

Product category

Professional Medical Association & Continuing Medical Education

NAICS

Professional, Scientific, and Technical Services (54)

SIC

Services-Membership Organizations (8600)

akta.pro primary industry

Healthcare Clinical Professions (CME/CE for Nurses, Allied Health, Pharmacy) (EDAAALAC)

akta.pro secondary industry

Healthcare & Clinical Professional Development (CME/CE) (EDAGANAJ)

Keywords

• Professional medical association
• Continuing medical education
• Board certification preparation
• Medical journal publishing
• Physician membership services

Headquarters

HQ city

Philadelphia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others, Infrastructure

Revenue model

1. Membership Dues: Annual membership dues from physicians, residents, medical students, international members, and non-physician affiliates. Dues vary by member type and years post-medical school. Physician dues: $324-$565/year; Resident: $145/year; Non-physician affiliate: $155/year; Medical students: free.
2. ACP MKSAP Subscriptions: Sale of ACP Medical Knowledge Self-Assessment Program subscriptions to members and non-members. Pricing ranges from $415 (resident members, 1-year) to $1,275 (non-members, 3-year). Over 90% of internal medicine residents use MKSAP for board preparation.
3. Annals of Internal Medicine Subscriptions: Subscription revenue from Annals of Internal Medicine journal. U.S./Canada: $349/year; Other countries: $584/year. Included free with ACP membership.
4. Internal Medicine Meeting Registration: Registration fees for ACP's annual Internal Medicine Meeting. Members receive discounted pricing. 2027 meeting scheduled for Los Angeles, CA (April 15-17, 2027).
5. Board Review Courses and Recordings: Sale of Internal Medicine Board Review course registrations (live and recordings) and other educational course materials. Includes Hospital Medicine recordings (98+ hours) and Internal Medicine recordings (148+ hours).
6. Fellowship Initiation Fees: One-time $175 Fellowship initiation fee for physicians advancing to Fellow (FACP) status.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels9 records

Core offering

The American College of Physicians (ACP) is a nonprofit professional membership association that sells individual memberships to internal medicine physicians, residents, fellows, medical students, and non-physician affiliates. Its core commercial offerings are ACP MKSAP (the dominant self-assessment/board prep program used by 90%+ of IM residents), the Annals of Internal Medicine journal subscription, the annual Internal Medicine Meeting, Board Review courses and recordings, the FACP Fellowship credential, and a library of 350+ CME/MOC activities plus clinical decision-support tools such as DynaMedex.

Product overview

ACP operates as a membership-based professional organization offering a comprehensive portfolio of educational products and clinical resources for internal medicine physicians. The core products include ACP MKSAP (Medical Knowledge Self-Assessment Program) for board preparation and continuous learning, and Annals of Internal Medicine journal for clinical research and guidelines. The portfolio extends through the Online Learning Center offering hundreds of CME activities, clinical tools like DynaMedex for decision support, and the flagship Internal Medicine Meeting. Additional offerings include specialty-specific learning series (obesity management, pain management, POCUS), podcasts (Bedside Rounds, Core IM, The DEI Shift), quality improvement curricula, and wellness resources. The ACP MKSAP platform integrates with ABIM through the ABIM Data Download Feature for personalized learning. The organization also provides AI-powered tools like the Obesity Management Conversations Tool for simulated patient interactions.

Differentiator

Problem solved

Functional benefit

Brands

• ACP MKSAP: Medical Knowledge Self-Assessment Program - comprehensive learning system for internal medicine board preparation and continuous learning
• Annals of Internal Medicine
• ACP JournalWise
• I.M. Matters from ACP
• ACP MKSAP

Products and services

• ACP Membership Annual individual membership for internal medicine physicians, residents, fellows, medical students, and non-physician affiliates. Includes Annals of Internal Medicine subscription, DynaMedex clinical decision-support access, 350+ CME/MOC activities, ACP Advocate newsletter, member pricing on MKSAP and courses, and access to 84 chapter networks.
• ACP MKSAP (Medical Knowledge Self-Assessment Program) Comprehensive self-assessment and board preparation subscription used by over 90% of internal medicine residents. Includes thousands of peer-reviewed multiple-choice questions, Virtual Dx image-based questions, MKSAP Quick Qs, digital flashcards, CORE progression/badges, ABIM Data Download integration, and accreditation for up to 300 AMA PRA Category 1 CME Credits and MOC points.
• Annals of Internal Medicine (Journal Subscription) Weekly peer-reviewed medical journal featuring original research, reviews, clinical guidelines, commentaries, and multimedia content. U.S./Canada subscription: $349/yr; international: $584/yr; institutional site licenses and print subscriptions available separately. Free with ACP membership.
• Internal Medicine Meeting (Annual Scientific Meeting) ACP's premier annual scientific meeting for internal medicine physicians offering over 200 educational sessions, 200+ faculty presenters, networking opportunities, and product discounts. Member and non-member registration tiers available.
• ACP Board Review Courses & Recordings

Quantifiable outcome

• 90%+ of internal medicine residents use MKSAP for board preparation
• +2 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature6 records

Partnerships

Five partnerships are on record, tiered notable and core.

• Kaiser PermanentenotableStrategic or Co-development Partner · 16 June 2026Joint presentation of the Permanente Live webinar 'Evidence under pressure: Medical excellence in an era of misinformation' on July 2, 2026, featuring physician leaders discussing strategies for patient trust and evidence-based practice.
• American Board of Internal Medicine (ABIM)coreStrategic or Co-development PartnerCollaboration on ABIM Data Download Feature within ACP MKSAP, allowing subscribers to import their most recent ABIM assessment results into ACP MKSAP for personalized learning plans. This represents the first national Precision Education program for practicing internal medicine physicians.
• DynaMedex (Micromedex)coreTechnology or IntegrationACP provides members free access to DynaMedex, an online clinical decision-support tool combining DynaMed clinical content with Micromedex drug information and AI search capabilities, searchable in 15 languages.
• DMD Healthcare Communications NetworknotableStrategic or Co-development PartnerACP is a member of the DMD Healthcare Communications Network, designed to enable medically relevant business communications to authenticated health care professionals. ACP membership includes registration with HCN, with professionally relevant information shared with DMD and member organizations.
• Josiah Macy Jr. FoundationnotableStrategic or Co-development PartnerGenerous support provided for the Annals 'On Being a Doctor' Story Slam event, demonstrating commitment to medical humanities and physician storytelling.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• American College of Surgeons: ACS is a peer medical specialty college with member dues, fellowship credential (FACS), board review courses, a flagship journal (Journal of the American College of Surgeons), and an annual Clinical Congress — same nonprofit society model as ACP but for surgeons.
• American Academy of Pediatrics: AAP is a large medical specialty society (~67,000 members) running a Pediatrics journal, PREP board prep, CME, and chapter network — a structurally identical model to ACP but for the pediatric specialty.
• American Academy of Family Physicians: AAFP is the largest U.S. primary-care-specialty physician membership society (~130,000+ members), with parallel CME, board prep, journal (American Family Physician), and advocacy functions targeted at family physicians — directly comparable to ACP's internal medicine focus.
• American Osteopathic Association: AOA is the primary osteopathic physician membership society with CME, specialty colleges, advocacy, and an annual convention — a parallel membership/CME society model competing for adjacent physician segments.
• Society of General Internal Medicine: SGIM is the academic general internal medicine society directly competing for the same internal medicine physician audience via meetings (Annual Meeting), Journal of General Internal Medicine, and clinician-educator resources.
• American College of Cardiology: ACC is a specialty society for cardiologists with parallel products — JACC journals, lifelong learning/MOC modules, board review, advocacy, and a fellows designation — making it a direct structural analog to ACP for a different IM subspecialty.

Broad incumbents

• Massachusetts Medical Society (NEJM Group): MMS publishes the New England Journal of Medicine and runs NEJM Knowledge+ and other CME products. It competes with Annals of Internal Medicine and ACP's educational portfolio at the top end of clinical publishing and board prep.
• American Medical Association: AMA is the broadest U.S. physician membership organization, offering JAMA, FREIDA, CME, and advocacy across all specialties. It overlaps with ACP on CME, advocacy, and physician resources but is not specialty-specific to internal medicine.

Others

• EBSCO (DynaMedex): EBSCO operates DynaMedex, which ACP bundles to members. As the upstream clinical decision support and medical literature database provider, EBSCO is the most directly comparable enabling/partner peer on ACP's clinical information stack.
• American Board of Internal Medicine: ABIM is the certification body for internists and a strategic partner to ACP via the MKSAB ABIM Data Download Feature. It is not a direct competitor for membership but governs board certification that drives demand for ACP's products.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/acpinternists
• Facebookfacebook.com/acpinternists
• LinkedInlinkedin.com/company/american-college-of-physicians

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about American College of Physicians