There is a building I drive past on the way to my ENT practice. Single-story, purpose-built medical office, three suites occupied by a dermatology group, an orthopedic surgical practice, and a pediatric specialist. It has been fully occupied for as long as I have practiced in this market. The dermatology group has been there for 11 years. The orthopedic tenant signed a 10-year lease extension two years ago.
I notice it because I know what it represents. Not just a building. A structural argument for why medical office buildings perform the way they do, and why I consider them one of the most defensible commercial real estate asset classes available to physician investors.
This article makes that argument with data. It covers what drives MOB performance, how the asset class compares to general office and other commercial real estate, and what a surgeon should understand before evaluating any healthcare real estate investment.
What Makes Medical Office Buildings Different From General Office
Medical office buildings are not simply office buildings that happen to house physicians. The distinction matters structurally.
General office vacancy reached approximately 19% nationally by year-end 2025, according to CBRE Research’s U.S. Office Market Statistics Q4 2025. The combination of remote work adoption, lease expirations from pre-pandemic commitments, and employer footprint reduction created a supply-demand imbalance that continues to weigh on the general office market.
Medical office performed fundamentally differently across the same period. According to Revista Med’s national MOB market summary, MOB vacancy nationally held below 9% through 2025, a level that has remained relatively stable for over a decade. The sector is not immune to vacancy or economic pressure, but it operates from a different demand base entirely.
Three structural factors explain the divergence. The first two are the ones a surgeon will feel in their bones.
First, physicians do not work from home. The clinical delivery of healthcare requires physical presence, purpose-built infrastructure, and often specialized equipment that cannot be replicated in a remote setting. A dermatologist, an orthopedic surgeon, an ENT, a cardiologist running stress tests: all require a physical facility, configured specifically for their practice.
Second, healthcare leases are long. General office leases have trended shorter since 2020, with tenants increasingly preferring three-to-five year terms to preserve flexibility. MOB tenants sign leases of seven to ten years as a baseline, according to CBRE’s U.S. Healthcare Real Estate Outlook 2025 . The reasons are practical: the capital invested by a specialist practice to build out and equip a clinical suite runs from $150 to $400 per square foot. A practice that has spent $600,000 configuring three treatment rooms, a procedure suite, and specialized lighting does not relocate without compelling cause.
Third, physician tenant credit quality is strong. An established specialty group or health-system-backed practice carries the kind of stable, recurring revenue profile that makes them reliable tenants over long lease terms. That credit quality is not abstract to a surgeon investor. You understand how a practice generates revenue, what makes it durable, and what puts it at risk. That clinical reading of tenant quality is something no spreadsheet captures.
The Demand Tailwinds That General Investors Miss
The structural features of the lease matter. The demand context surrounding MOB is what makes the thesis compelling over a multi-decade investment horizon.
The Centers for Medicare and Medicaid Services’ National Health Expenditure Projections forecast U.S. healthcare spending to grow at an average annual rate of approximately 5.6% through 2032, reaching $7.7 trillion. The primary driver of that growth is demographic: the U.S. population over 65 is expanding at a rate that healthcare delivery infrastructure has not kept pace with.
The second demand driver is structural migration out of hospital settings. For the past 15 years, health systems have systematically shifted ambulatory care delivery, routine procedures, follow-up visits, and chronic disease management, from hospital campuses to off-campus outpatient facilities. The clinical and economic rationale is clear: outpatient procedures cost significantly less than equivalent inpatient episodes. Payors, patients, and health systems all benefit from the shift. The physical infrastructure of that shift is the medical office building.
Documents continued net absorption in off-campus MOB space as health systems expand ambulatory footprints in suburban markets. The buildings absorbing that demand are purpose-built, outpatient-configured facilities, not repurposed general office space.
A surgeon reading this understands the clinical reality that the data describes. The shift from inpatient to outpatient is not an abstraction. It is the professional context in which most specialists practice today.
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How MOB Returns Are Structured
Medical office buildings generate returns through the same three channels as other commercial real estate: cash flow from rental income, equity appreciation at sale, and tax attributes through depreciation. What distinguishes MOB is the stability profile of the cash flow component.
Triple-net and modified gross leases are standard in medical office. Under a triple-net structure, the tenant bears responsibility for property taxes, insurance, and maintenance costs above a base amount. This structure reduces the property owner’s operating exposure and provides more predictable net operating income. Physician practices and health systems, accustomed to managing operational overhead in their clinical settings, are comfortable with this lease structure and typically honor it consistently over long terms.
Healthpeak Properties, one of the largest publicly traded MOB REITs, reported same-store NOI growth of approximately 3% in its medical office portfolio in 2025, with portfolio occupancy above 89%. For a surgeon evaluating the performance profile of the asset class, REIT supplemental data provides a useful benchmark, with the caveat that publicly traded REIT performance and private syndication performance operate under different structures, cost bases, and return expectations.
According to Marcus and Millichap’s Healthcare Real Estate Investment Forecast 2025 [7], MOB cap rates nationally ranged from approximately 5.5% to 6.5% for stabilized assets in primary and secondary markets. These figures represent the going-in yield on acquisition and reflect the market’s view of the sector’s risk-adjusted return profile relative to other commercial real estate types.
Why Surgeons Have a Specific Informational Advantage
Most commercial real estate investors evaluating a medical office building are reading market reports, touring the building, and reviewing lease abstracts. A surgeon investor is doing all of that, and also doing something no generalist investor can: applying 20 years of clinical and professional experience to evaluate the tenants, the market, and the durability of the demand directly.
A surgeon knows which specialties are growing in a given market and which are consolidating. A surgeon knows whether a building’s current tenant mix is positioned well relative to where healthcare delivery is heading. A surgeon knows the difference between a practice with a strong referral base and one that is operationally vulnerable. None of this is available in a Revista Med report. It is available to a physician who has operated in the same professional ecosystem for decades.
This informational advantage does not remove investment risk. It changes the quality of the evaluation.
At Apta Investment Group, our MOB deals are underwritten and managed by a team that includes practicing healthcare professionals who apply exactly this kind of clinical and professional pattern recognition to the tenant selection and lease evaluation process. Think about what that actually means in practice. A surgeon evaluating an MOB anchored by an orthopedic group can read that lease the way a generalist investor never can. They know whether that group is growing or consolidating. They know whether the procedure mix is shifting toward ASC settings, which would reduce the group’s need for that specific footprint at renewal. They know which health system relationships in that market are stable and which are under pressure. A CBRE market report cannot tell you any of that. Twenty years of practicing in the same regional ecosystem can.
This is the edge that makes physician investors uniquely positioned in this asset class, not just as capital providers, but as evaluators. The question is whether you have the framework to apply it. That is a significant part of what we build with every physician investor who comes through Apta.
The Risks a Disciplined Investor Acknowledges
The MOB investment thesis is strong. It is not risk-free, and a surgeon applying the same diagnostic rigor to this asset class that they apply to a clinical decision will want to understand the downside cases.
Health system consolidation creates tenant concentration risk. When a regional health system becomes the dominant tenant in a building, or acquires the specialty group that previously signed the lease, the credit quality may improve but the negotiating leverage at renewal shifts. A health system with 30 facilities across a market has different lease renewal dynamics than an independent two-physician practice.
Reimbursement compression affecting physician revenue can reduce a practice’s ability to absorb rent escalations. If the tenants’ economics tighten, renewal leasing spreads and rent growth moderate. This risk is real in specialties facing significant CMS reimbursement adjustments.
Purpose-built MOB infrastructure also creates leasing friction on vacancy. A suite built for an orthopedic surgeon, with procedure rooms, specialized flooring, and equipment connections, requires capital to reconfigure for a different medical use. Turnover costs are higher than in general office.
These risks are manageable with disciplined underwriting: multi-tenant properties that reduce single-tenant concentration, lease structures with escalation clauses that match the property’s financing costs, and markets with strong population growth and diversified healthcare demand.
A Compliance Note That Belongs in This Article
Because this article is written by a practicing surgeon for a physician investor audience, a specific disclosure is required and appropriate here.
Physicians considering investment in medical office buildings where they have or anticipate patient referral relationships should consult qualified healthcare counsel regarding potential Stark Law (42 U.S.C. § 1395nn) and Anti-Kickback Statute (42 U.S.C. § 1320a-7b(b)) implications. These laws impose significant restrictions on physician financial relationships with entities to which they refer patients and require careful legal review prior to any investment decision involving healthcare-related real estate.
Investing in an MOB where you do not practice, in a market where you have no referral relationships, does not trigger these concerns. But the proximity of physicians to healthcare real estate creates enough potential overlap that every surgeon evaluating a MOB investment should ensure this question has been answered clearly before committing capital. Qualified healthcare counsel, not a real estate attorney, is the right resource for this specific review.
Apta Investment Group and its partners have been involved in more than $1 billion in real estate investments across multiple market cycles. To date, we have not experienced a loss of investor capital in any realized investment, and realized investments have produced positive returns to investors. Past performance does not guarantee future results. All investments involve risk, including the potential total loss of capital.
The Investment Case in Plain Language
Medical office buildings outperform general commercial real estate in occupancy stability and lease duration because their tenants cannot work remotely, have invested heavily in their specific physical space, and operate in a sector with structural, demographically-driven demand growth.
For a surgeon investor, the asset class adds a layer that other commercial real estate does not: the ability to evaluate the underlying demand, the tenant quality, and the market dynamics from direct professional experience. That edge does not guarantee returns. It does improve the quality of the judgment going in.
Where to Go From Here
If you want to understand how MOB fits into Apta’s broader investment strategy alongside multifamily and grocery-anchored retail, our investment strategy page covers the full asset class framework and our underwriting approach.
When you are ready to have a direct conversation about how these asset classes are structured into specific deals, a 30-minute discovery call is available for accredited investors only.
This material is provided for informational and educational purposes only and does not constitute tax, legal, accounting, or investment advice. The discussion reflects general principles of U.S. federal tax law as of the date of publication and may not apply to your individual circumstances. Tax laws are complex, subject to change, and dependent on each investor’s specific situation. Any references to depreciation, cost segregation, bonus depreciation, passive loss rules, the Real Estate Professional Status (REPS) election, capital gains treatment, or depreciation recapture are illustrative only and are not guarantees of tax outcomes. Examples and hypothetical scenarios are for demonstration purposes and should not be relied upon as projections of actual results. Investing in real estate involves risk, including the potential loss of principal. Past performance does not guarantee future results. Consult your own qualified tax and legal advisors before making any investment decision. Apta Investment Group is not a registered investment adviser or broker-dealer.
Frequently Asked Questions
What makes medical office building investment returns more stable than general office?
Medical office building investment returns are more stable than general office because the tenant base, physician practices and health systems, cannot adopt remote work, has invested heavily in purpose-built clinical infrastructure, and operates in a sector with structurally growing demand driven by population aging and the shift of healthcare delivery to outpatient settings. According to Revista Med’s national MOB market summary, MOB vacancy nationally held below 9% through 2025, compared to approximately 19% for general office per CBRE Research. Lease terms typically run seven to ten years versus shorter general office norms, and tenant credit quality reflects the stable, recurring revenue profiles of established medical practices. Apta Investment Group focuses on MOB as one of its core asset classes for these structural reasons.
How does aging population growth affect medical office building demand?
Aging population growth directly drives medical office building demand by expanding the patient base for specialties, including cardiology, orthopedics, urology, and primary care, that serve older patients at disproportionately high rates. The Centers for Medicare and Medicaid Services projects U.S. healthcare spending to grow at approximately 5.6% annually through 2032. Simultaneously, health systems are migrating ambulatory care delivery from hospital campuses to off-campus outpatient facilities, which increases demand for purpose-built MOB space in suburban and secondary markets. These two forces, demographic expansion and structural migration out of hospital settings, create durable demand tailwinds that support MOB occupancy and rent growth independent of broader commercial real estate cycles.
What should a physician investor know before investing in a medical office building syndication?
A physician investor evaluating a medical office building syndication should understand four areas: the tenant mix and lease terms, including whether leases are triple-net or modified gross and when renewals are due; the health system or practice credit quality of the anchor and secondary tenants; the submarket demand fundamentals, including population growth and competing supply; and, critically, whether any Stark Law or Anti-Kickback Statute considerations apply based on their own practice location and referral relationships. Physicians investing in MOBs where they have existing or anticipated patient referral relationships must consult qualified healthcare counsel before proceeding, regardless of the investment’s financial merits. Apta Investment Group’s MOB deals are structured and underwritten with physician investor circumstances in mind. All investment opportunities are available exclusively to verified accredited investors. Consult your qualified investment and legal advisors before making any investment decision.