# Critical infrastructure operators headquartered in Pittsburgh

Tamtam tracks 25 critical infrastructure operators headquartered in Pittsburgh. This list ranks all of them by number of employees on LinkedIn, led by PNC, UPMC and Highmark Health. Their median headcount is 603. Half of them were founded in 1964 or later.

This list features large critical infrastructure operators in Pittsburgh. The companies are primarily concentrated in the financial services and healthcare sectors, alongside several utilities and transportation providers. Notable examples include PNC, a financial services provider focused on managing money; UPMC, a health care provider and insurer; Highmark Health, offering health insurance and care delivery; and Duquesne Light Company, providing electric service to southwestern Pennsylvania.

A significant pattern among these organizations is their long-standing presence in the region, with several companies founded in the 19th century, such as F.N.B. Corporation (1864), Dollar Bank (1855), and Peoples Natural Gas (1885). This indicates a mature and established corporate landscape in Pittsburgh's critical infrastructure.

🇺🇸 Pittsburgh · 25 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [PNC](https://www.tamtam.ai/c/pnc) (pnc.com)<br>Provides financial services focused on managing money effectively to simplify clients' financial lives and support their life goals. | Financial Services | 🇺🇸 Pittsburgh | 64,159 |  |
| 2 | [UPMC](https://www.tamtam.ai/c/upmc) (upmc.com)<br>A leading health care provider and insurer in Pittsburgh, offering patient-centered care, innovative models, and community benefits through hospitals and insurance services | Hospitals and Health Care | 🇺🇸 Pittsburgh | 41,860 |  |
| 3 | [Highmark Health](https://www.tamtam.ai/c/highmark-health) (highmarkhealth.org)<br>Provides health insurance, care delivery, population health management, dental solutions, reinsurance, and innovative technology to millions of customers across the nation. | Hospitals and Health Care | 🇺🇸 Pittsburgh | 15,876 |  |
| 4 | [Allegheny Health Network](https://www.tamtam.ai/c/allegheny-health-network) (ahn.org)<br>Integrated healthcare delivery system with hospitals, medical centers, wellness pavilions, and numerous physician practices serving Western Pennsylvania. | Hospitals and Health Care | 🇺🇸 Pittsburgh | 11,676 |  |
| 5 | [F.N.B. Corporation](https://www.tamtam.ai/c/f-n-b-corporation) (fnb-online.com)<br>Diversified financial services company offering commercial banking, consumer banking, wealth management, and insurance solutions across multiple U.S. states. | Financial Services | 🇺🇸 Pittsburgh | 7,832 | 1864 |
| 6 | [Highmark](https://www.tamtam.ai/c/highmark) (highmark.com)<br>A leading health insurance organization delivering high-quality, accessible, and affordable solutions to 68 million members in multiple states | Insurance | 🇺🇸 Pittsburgh | 7,672 |  |
| 7 | [UPMC Children's Hospital of Pittsburgh](https://www.tamtam.ai/c/upmc-children-s-hospital-of-pittsburgh) (chp.edu)<br>A leader in treating childhood conditions, developing therapies, educating pediatricians, and advancing research with strong community support since 1890 | Hospitals and Health Care | 🇺🇸 Pittsburgh | 3,489 | 1890 |
| 8 | [Dollar Bank](https://www.tamtam.ai/c/dollar-bank) (dollar.bank)<br>An inclusive community bank investing in customers, empowering employees, and strengthening communities while prioritizing customer privacy and data protection | Banking | 🇺🇸 Pittsburgh | 1,442 | 1855 |
| 9 | [Duquesne Light Company](https://www.tamtam.ai/c/duquesne-light-company) (duquesnelight.com)<br>Providing safe, reliable electric service to over 600,000 customers in southwestern Pennsylvania with a focus on clean energy transition. | Utilities | 🇺🇸 Pittsburgh | 1,428 | 1880 |
| 10 | [St. Clair Health](https://www.tamtam.ai/c/st-clair-health) (stclair.org)<br>An independent acute-care medical center in southwestern Pennsylvania, offering a wide range of high-quality health care services to the community | Hospitals and Health Care | 🇺🇸 Pittsburgh | 1,408 | 1954 |
| 11 | [UPMC Hillman Cancer Center](https://www.tamtam.ai/c/upmc-hillman-cancer-center) (hillmanresearch.upmc.edu)<br>An NCI-designated cancer center affiliated with a university, providing high-level clinical care, research, and education to cancer patients and professionals | Hospitals and Health Care | 🇺🇸 Pittsburgh | 1,028 |  |
| 12 | [Pittsburgh Regional Transit](https://www.tamtam.ai/c/pittsburgh-regional-transit) (rideprt.org)<br>Operate and maintain bus, rail, and incline transit services in the Pittsburgh metropolitan area with a workforce of 2,600 employees. | Truck Transportation | 🇺🇸 Pittsburgh | 892 | 1964 |
| 13 | [Port Authority of Allegheny County](https://www.tamtam.ai/c/port-authority-of-allegheny-county) (rideprt.org)<br>A transportation company in Pittsburgh provides bus, light rail, incline, and paratransit services to millions of riders daily Operating since 1964 | Truck Transportation | 🇺🇸 Pittsburgh | 603 | 1964 |
| 14 | [Peoples Natural Gas](https://www.tamtam.ai/c/peoples-natural-gas) (peoples-gas.com)<br>A company providing clean, reliable natural gas to homes and businesses in Pennsylvania, West Virginia, and Kentucky, with a focus on community support and environmental sustainability | Utilities | 🇺🇸 Pittsburgh | 602 | 1885 |
| 15 | [Upmc Passavant](https://www.tamtam.ai/c/upmc-passavant) (upmc.com)<br>A $23 billion nonprofit health enterprise with 92,000 employees, 40 hospitals, and over 8,000 licensed beds, providing global integrated healthcare services | Hospitals and Health Care | 🇺🇸 Pittsburgh | 590 |  |
| 16 | [TriState Capital Bank](https://www.tamtam.ai/c/tristate-capital-bank) (tristatecapitalbank.com)<br>TriState Capital Bank serves middle market businesses, executives, and high-net-worth individuals with commercial and private banking services on a national scale | Banking | 🇺🇸 Pittsburgh | 503 | 2007 |
| 17 | [Va Pittsburgh Healthcare Systs](https://www.tamtam.ai/c/va-pittsburgh-healthcare-systs) (va.gov)<br>A healthcare system in the tri-state area serving veterans, offering medical, surgical, behavioral health services, as well as community living and recovery centers | Hospitals and Health Care | 🇺🇸 Pittsburgh | 477 |  |
| 18 | [Community Care Behavioral Health Organization](https://www.tamtam.ai/c/community-care-behavioral-health-organization) (ccbh.com)<br>A non-profit behavioral health organization dedicated to improving community well-being through accessible and cost-efficient services, embracing healing and transformation | Mental Health Care | 🇺🇸 Pittsburgh | 317 | 1996 |
| 19 | [Pittsburgh International Airport](https://www.tamtam.ai/c/pittsburgh-international-airport) (flypittsburgh.com)<br>Operating Pittsburgh International Airport and Allegheny County Airport, the company oversees all airport operations, new development, airline management, and airfield operations to enhance regional economic value and accessibility | Airlines and Aviation | 🇺🇸 Pittsburgh | 315 |  |
| 20 | [Equitrans Midstream Corporation](https://www.tamtam.ai/c/equitrans-midstream-corporation) (equitransmidstream.com)<br>Provides safe, reliable, and innovative energy infrastructure solutions through assets in the Appalachian Basin to meet United States energy demands for stakeholders. | Oil and Gas | 🇺🇸 Pittsburgh | 277 | 2018 |
| 21 | [Direct Energy Business](https://www.tamtam.ai/c/direct-energy-business) (nrg.com)<br>Leading provider of energy and energy-related services to businesses, offering innovative products to help manage energy costs and operations effectively | Utilities | 🇺🇸 Pittsburgh | 245 |  |
| 22 | [Pittsburgh Water](https://www.tamtam.ai/c/pittsburgh-water) (pgh2o.com)<br>The company is a large authority providing water, sewer, and stormwater services to 465,000 consumers in Pittsburgh and surrounding areas | Utilities | 🇺🇸 Pittsburgh | 208 | 1984 |
| 23 | [The Institute for Transfusion Medicine](https://www.tamtam.ai/c/the-institute-for-transfusion-medicine) (itxm.org)<br>Specializing in transfusion medicine, this organization collects and distributes safe blood products to hospitals and patients worldwide, providing expert support and education | Hospitals and Health Care | 🇺🇸 Pittsburgh | 208 | 1970 |
| 24 | [Atlas Pipeline Partners, L.P.](https://www.tamtam.ai/c/atlas-pipeline-partners-l-p)<br>A full service midstream company offering reliable gas gathering, compression, processing, and treating services with over 11,200 miles of intrastate assets | Oil and Gas | 🇺🇸 Pittsburgh | 114 | 1999 |
| 25 | [EQT Midstream Partners, LP](https://www.tamtam.ai/c/eqt-midstream-partners-lp)<br>A Pennsylvania-based oil & energy company focused on midstream operations and partnerships within the industry | Oil and Gas | 🇺🇸 Pittsburgh | 3 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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Source: https://www.tamtam.ai/l/critical-infrastructure-operators-pittsburgh