The career of Matthew Jeffers represents a significant trajectory in modern television and independent cinema. Known for delivering grounded, high-energy performances, Jeffers has transitioned from guest roles in long-running procedurals to pivotal characters in major franchises. His work spans across high-budget AMC spin-offs, long-term NBC medical dramas, and award-winning independent films.

Quick Overview of Key Matthew Jeffers Roles

Matthew Jeffers is most widely recognized for the following major projects:

  • The Walking Dead: The Ones Who Live (2024): Nat
  • New Amsterdam (2018–2023): Dr. Mark Walsh
  • Unidentified Objects (2022): Peter (Lead Role & Producer)
  • The Marvelous Mrs. Maisel (2022–2023): Russell
  • FBI (2021): Derek Morales
  • The Blacklist (2015): Mr. Figaro

Breakthrough in The Walking Dead: The Ones Who Live

In 2024, Matthew Jeffers joined the expansive universe of The Walking Dead in the highly anticipated spin-off, The Walking Dead: The Ones Who Live. His portrayal of Nat, a character introduced in the series' early episodes, became an immediate standout for both fans and critics.

The Character of Nat

Nat is depicted as a resourceful and brilliant survivor with a background in pyrotechnics and engineering. Unlike many characters in the post-apocalyptic genre who rely solely on physical prowess, Nat's strength lies in his intellect and his ability to "build fire" even in the bleakest circumstances. His role is instrumental in the journey of Michonne (Danai Gurira), providing the technical expertise and emotional groundedness she needs to continue her search for Rick Grimes.

Narrative Significance

The inclusion of Jeffers in this role was praised for its subversion of typical survivalist tropes. Nat is not defined by his physical stature but by his utility and loyalty. His expertise with explosives and his no-nonsense attitude provided a fresh dynamic to the series' established lore. The chemistry between Jeffers and Gurira was a highlight of the first season, rooted in a shared history and mutual respect between their characters.

The Longevity of New Amsterdam

Before entering the world of zombies, Matthew Jeffers was a familiar face to fans of the NBC medical drama New Amsterdam. Spanning five seasons from 2018 to 2023, Jeffers appeared in 34 episodes, making him one of the most consistent recurring cast members in the show's history.

Dr. Mark Walsh and the Emergency Department

Jeffers played Dr. Mark Walsh, an Emergency Department resident and later a full doctor at the fictional New Amsterdam Medical Center. Throughout the series, Dr. Walsh served as a reliable professional within the chaotic environment of a public hospital. The character was often involved in high-stakes medical cases that tested the staff's ethical and professional boundaries.

Development and Screen Presence

While New Amsterdam centered on Dr. Max Goodwin (Ryan Eggold), the strength of the series relied heavily on its supporting medical staff. Dr. Walsh represented the "engine room" of the hospital—the hard-working residents who managed the day-to-day crises. Jeffers brought a sense of realism and dry wit to the role, participating in significant story arcs involving hospital-wide crises, pandemics, and the systemic challenges of the American healthcare system.

Artistic Achievement in Unidentified Objects

While his television work brought him mainstream fame, the 2022 independent film Unidentified Objects showcased Jeffers' range as a leading man and a producer.

Plot and Performance

In Unidentified Objects, Jeffers stars as Peter, a misanthropic and intellectual dwarf who embarks on a surreal road trip across North America with his eccentric neighbor. The film blends elements of comedy, drama, and science fiction as the duo travels toward a site of potential extraterrestrial contact.

Peter is a complex protagonist—cynical, guarded, and deeply isolated. Jeffers' performance was noted for its vulnerability and intellectual sharpness, capturing the internal struggle of a man who feels alienated from the world around him. This role allowed Jeffers to explore themes of identity, belonging, and the human condition far beyond the constraints of typical supporting characters.

Critical Recognition and Production

For his performance as Peter, Matthew Jeffers received the "Best Leading Actor" award at Outfest 2022. Beyond his acting, Jeffers served as a producer on the project, demonstrating his commitment to bringing unique, character-driven narratives to the screen. The film's success on the festival circuit solidified his status as a formidable talent in the independent film community.

Notable Television and Guest Appearances

Beyond his long-term roles, Jeffers has appeared in some of the most prominent scripted series on television, often bringing a distinct energy to single-episode or multi-episode arcs.

The Marvelous Mrs. Maisel

Jeffers appeared in the critically acclaimed Amazon Prime series The Marvelous Mrs. Maisel as Russell. His presence in seasons 4 and 5 added to the rich tapestry of the 1950s and 60s New York comedy and theater scene that the show depicts so vividly. His episodes include "Interesting People on Christopher Street" and "How Do You Get to Carnegie Hall?", where he interacted with the high-energy world of Midge Maisel's expanding career.

Procedural Dramas: FBI and The Blacklist

The procedural crime genre has also utilized Jeffers' talents. In the CBS series FBI, he played Derek Morales in the Season 3 episode "Leverage." The role required a transition from the medical environment of New Amsterdam to the tense, high-stakes world of federal investigations.

Earlier in his career, in 2015, Jeffers appeared in The Blacklist as Mr. Figaro in the episode "Sir Crispin Crandall." Though a guest role, it marked an early entry into major network television, setting the stage for his future success in recurring roles.

Success in Theater and Stage Productions

Matthew Jeffers is a classically trained actor whose work in theater informs his on-screen presence. His stage credits are extensive and include collaborations with some of the most prestigious theater companies in the United States.

Shakespeare in the Park: Richard III

In 2022, Jeffers performed in the Public Theater’s production of Richard III at the Delacorte Theater in Central Park. He played the role of Earl Rivers, appearing alongside Danai Gurira (who played the title role). This production was notable not only for its artistic merit but for reuniting Jeffers and Gurira before they would later share the screen in The Walking Dead.

Broadway and Off-Broadway Credits

Jeffers was part of the cast for the Broadway production of An Enemy of the People. His Off-Broadway work is equally impressive, with credits in productions such as:

  • Moscow Moscow Moscow Moscow Moscow Moscow (MCC Theater)
  • Thunderbodies (Soho Rep)
  • Light Shining in Buckinghamshire (New York Theatre Workshop)

His experience in live theater, particularly in Shakespearean and experimental works, is evident in the precision and vocal control he brings to his film and television characters.

Comprehensive Filmography and Credits

The following table summarizes the film and television credits for Matthew Jeffers, based on released and documented productions.

Year Title Role Format
2024 The Walking Dead: The Ones Who Live Nat TV Mini-Series
2018–2023 New Amsterdam Dr. Mark Walsh TV Series (34 episodes)
2022–2023 The Marvelous Mrs. Maisel Russell TV Series (3 episodes)
2023 Great Performances: Richard III Earl Rivers TV Series (Theater Broadcast)
2022 Unidentified Objects Peter Film (Lead / Producer)
2021 FBI Derek Morales TV Series (1 episode)
2016 Exit Interview The Handler Short Film
2015 The Blacklist Mr. Figaro TV Series (1 episode)

Future Projects: What is Next for Matthew Jeffers?

As of 2024 and 2025, Matthew Jeffers continues to expand his portfolio with projects that lean into his skills as both a dramatic actor and a public figure.

Being Heumann

Jeffers is slated to appear in Being Heumann, a project based on the memoir of disability rights activist Judith Heumann. He is cast in the role of Gerald. This project aligns with the industry's shift toward authentic representation and stories centered on the history of civil rights.

The Tallest Dwarf

In addition to scripted work, Jeffers is involved in The Tallest Dwarf, a documentary project that explores his personal experiences and his unique position within the entertainment industry. This project highlights his role as an advocate and a keynote speaker who uses his platform to discuss overcoming systemic and physical obstacles.

Industry Impact and Representation

The career of Matthew Jeffers is often cited as a benchmark for the professionalization of roles for actors with dwarfism. Throughout his filmography, Jeffers has consistently sought roles where the character’s identity is multifaceted, rather than being defined solely by their physical appearance.

Whether playing a highly skilled engineer in a post-apocalyptic world or a dedicated emergency room doctor in a modern hospital, Jeffers brings a level of gravitas that challenges historical casting biases. His success in Unidentified Objects as both a lead actor and producer further demonstrates his agency in shaping the narratives he participates in.

Summary

Matthew Jeffers has built a diverse and impactful career across television, film, and theater. From his early guest spots on The Blacklist to his major recurring role as Dr. Mark Walsh in New Amsterdam, he has proven to be a versatile performer capable of handling complex medical jargon and intense dramatic arcs. His recent turn as Nat in The Walking Dead: The Ones Who Live has introduced him to a global audience, while his work in Unidentified Objects remains a testament to his artistic depth. As he moves into upcoming projects like Being Heumann, Jeffers continues to be a vital voice in contemporary media.

FAQ

What character did Matthew Jeffers play in The Walking Dead?

Matthew Jeffers played the character Nat in the 2024 mini-series The Walking Dead: The Ones Who Live. Nat was an ally to Michonne, known for his expertise in pyrotechnics and his resourceful nature.

How many episodes of New Amsterdam was Matthew Jeffers in?

Matthew Jeffers appeared in 34 episodes of New Amsterdam between 2018 and 2023. He played Dr. Mark Walsh, a recurring doctor in the Emergency Department.

Has Matthew Jeffers won any awards for his acting?

Yes, Matthew Jeffers won the Best Leading Actor award at Outfest 2022 for his performance as Peter in the independent film Unidentified Objects.

Was Matthew Jeffers in The Marvelous Mrs. Maisel?

Yes, Matthew Jeffers played the character Russell in The Marvelous Mrs. Maisel, appearing in three episodes during the show's fourth and fifth seasons (2022–2023).

What are Matthew Jeffers' upcoming movies?

Matthew Jeffers is cast in the upcoming project Being Heumann (playing the role of Gerald) and is involved in the documentary The Tallest Dwarf.

Did Matthew Jeffers perform in theater before TV?

Matthew Jeffers has a strong background in theater, including Shakespearean roles. He performed in Richard III at Shakespeare in the Park and has appeared in various Broadway and Off-Broadway productions.