What Does Diplomat Do?

Total employees694
HeadquartersFlint
Founded1975

Diplomat Pharmacy (often referred to as DiplomatRx) was a prominent independent specialty pharmacy in the United States, dedicated to providing individualized medication management programs for patients with complex chronic diseases. Founded in 1975, Diplomat focused on conditions such as oncology, immunology, and hepatitis. The company was known for its high-touch patient care model, clinical expertise, and comprehensive support services. In February 2020, Diplomat Pharmacy was acquired by OptumRx, a part of UnitedHealth Group, and its operations were integrated into Optum's specialty pharmacy services.

Where Is Diplomat's Headquarters?

HQ Function

Served as the primary administrative, operational, and patient support center for Diplomat Pharmacy's nationwide specialty pharmacy services.

Notable Features:

The Flint headquarters was a significant local employer and a modern facility designed to support complex pharmacy operations, including advanced dispensing technologies and call center capabilities for patient engagement.

Work Culture:

Historically, Diplomat Pharmacy fostered a patient-centric work culture, emphasizing compassion, clinical expertise, and collaboration among its pharmacists, nurses, and support staff to manage complex patient needs effectively.

HQ Significance:

The Flint headquarters was crucial to Diplomat's growth into one of the largest independent specialty pharmacies in the U.S., symbolizing its commitment to serving patients with chronic and rare diseases and its roots in the Flint community.

Values Reflected in HQ: The headquarters reflected Diplomat's core values of patient focus, clinical excellence, innovation in pharmaceutical care, and a commitment to the community it served.

Location:

Prior to its acquisition by OptumRx, Diplomat Pharmacy's (DiplomatRx) operations were primarily focused within the United States. They provided specialty pharmacy and infusion services nationwide, managing complex medication therapies for patients across all 50 states and U.S. territories. International operations were not a significant aspect of their business model, which centered on domestic healthcare services.

Street Address:

4100 S. Saginaw St.

City:

Flint

State/Province:

Michigan

Country:

USA

Where Else Does Diplomat Operate Around the World?

Swartz Creek, Michigan, USA

Address: 8121 Tri-County Pkwy, Swartz Creek, MI 48473 (historical)

Served as a critical hub for medication distribution and patient support services across multiple regions in the U.S.

Various locations across the USA

Address: Multiple sites (e.g., historical presence in Texas, Florida, Illinois, Ohio, Massachusetts, Pennsylvania, North Carolina, Maryland)

To provide regional support, enhance distribution speed, offer specialized infusion services, and deliver localized patient care services across the United States.

Buying Intent Signals for Diplomat

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Diplomat? Meet the Executive Team

As of April 2025, Diplomat' leadership includes:

Brian Griffin - Former Chief Executive Officer (at time of acquisition)
Phil Hagerman - Co-Founder and Former Chairman & CEO
Sean Whelan - Former Chief Financial Officer
Gary Kadlec - Former President

Who's Investing in Diplomat?

Diplomat has been backed by several prominent investors over the years, including:

Prior to its acquisition, Diplomat Pharmacy was a publicly traded company on NASDAQ (ticker: DPLO). Its investors included a wide range of institutional asset managers, mutual funds, and individual shareholders.
In February 2020, Diplomat Pharmacy was acquired by OptumRx, a subsidiary of UnitedHealth Group (NYSE: UNH), for $4.00 per share in an all-cash transaction, valuing the company at approximately $300 million. This made UnitedHealth Group the ultimate parent company.

What Leadership Changes Has Diplomat Seen Recently?

Hire0
Exits0

Significant executive changes at Diplomat Pharmacy primarily occurred around its acquisition by OptumRx in February 2020. Most executive roles transitioned or ceased as Diplomat was integrated into OptumRx. No executive hires or exits directly attributed to a standalone 'DiplomatRx' entity have been publicly reported in the last 12 months, as it no longer operates independently.

What Technology (Tech Stack) Is Used byDiplomat?

Discover the tools Diplomat uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Diplomat Email Formats and Examples

Historically, Diplomat Pharmacy likely used common corporate email formats based on its domain `diplomatpharmacy.com`. After its acquisition by OptumRx in 2020, communications for its former services would be routed through Optum or UnitedHealth Group email systems. The formats below are speculative common patterns for companies like Diplomat Pharmacy pre-acquisition.

[first].[last]@[diplomatpharmacy.com] or [f][last]@[diplomatpharmacy.com]

Format

jane.doe@diplomatpharmacy.com or jdoe@diplomatpharmacy.com

Example

0%

Success rate

What's the Latest News About Diplomat?

PR NewswireFebruary 14, 2020

Diplomat Pharmacy Announces Completion of Acquisition by OptumRx

Diplomat Pharmacy, Inc. announced the completion of its acquisition by OptumRx, a pharmacy care services company and part of UnitedHealth Group. This merger integrated Diplomat's specialty pharmacy services into Optum's broader healthcare offerings, concluding Diplomat's run as an independent, publicly traded company....more

UnitedHealth Group NewsroomDecember 9, 2019

OptumRx to Combine with Diplomat

OptumRx, UnitedHealth Group’s pharmacy care services business, announced it would acquire Diplomat, a provider of specialty pharmacy and infusion services. The agreement highlighted Diplomat's financial struggles and Optum's strategy to enhance its specialty pharmacy capabilities....more

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