O'Neil Hauser Mansfield, P.C.

Practice Areas

About O'Neil Hauser Mansfield, P.C.

From the firm’s website

Attorneys

• Joshua D. Mansfield — Attorney
• Elizabeth Doyle — Attorney
• Emmalyn F. Espinosa — Associate Attorney
• Océane L. Roux — Associate Attorney

Services listed

Immigration Law, Asylum, Individuals & Families, Family-Based Immigration, Business, Removal Of Conditions On Residence Status, Naturalization, Green Cards, Cancellation of Removal, Consular Processing, Family-based green cards, Nonimmigrant visas and labor certification (PERM)

Languages

Portuguese, Spanish, Cantonese, Mandarin, Greek, Italian, French, Arabic

Founded

1975

Fees

The firm offers flexible billing options.

Offices

• 105 Main St Charlestown, MA 02129

Source: oneilhauser.com · checked October 11, 2026. Lawyers Near Me hasn’t independently verified these details.

Hours of Operation

Monday

8:30 am–5 pm

Tuesday

8:30 am–5 pm

Wednesday

8:30 am–5 pm

Thursday

8:30 am–5 pm

Friday

8:30 am–5 pm

Saturday

Closed

Sunday

Closed

Photos

Details & Amenities

• Hans Robles· via Google

  After many years filled with uncertainty, stress, and countless obstacles, my mother case has been resolved and her legal status been approved — and it is all thanks to the incredible team at O'Neil Hauser Mansfield, P.C. From the very beginning, Joshua, Joan, and the entire team stood by us with compassion, understanding, and unwavering determination. They never treated this as just another case. They understood that this was about family, and they carried that responsibility with heart and care every step of the way. There were moments when hope felt distant, but they never gave up on us. They fought for every detail, guided us through every challenge, and gave us strength when we needed it most. Their motto, "Let Us Help You Achieve Your Immigration Goals," is not just a promise — it's exactly what they deliver. We are forever grateful. If you are searching for an immigration firm that will fight for you, stand with you, and truly care about your journey, I wholeheartedly recommend O'Neil Hauser Mansfield, P.C. They gave us back hope and a future together as a family.

  a year ago
• M Lima· via Google

  I hired O'Neil Hauser Mansfield, P.C. office, to help me with my husband's I-30 application, and I couldn't be happier with the outcome. From the start, they were very professional and explained everything in detail. They made sure we understood each step of the process and provided regular updates. Their expertise in immigration law was evident, and I felt confident that his case was in good hands. The process went smoothly, and his green card was approved. Their fees were reasonable; you get charged as the process moves, and there were no surprises. And they were always available to answer my questions. "I can't forget to mention Joan—she was incredibly helpful throughout the final process. She made sure I never felt left in the dark, and I truly appreciated how she was so attuned to my anxiety about the whole final process. Joan stayed in regular contact, reaching out every couple of days to answer my questions and assist with the final details. Her support made a huge difference, and I felt completely reassured with her by my side." I highly recommend O'Neil Hauser Mansfield, P.C., to anyone in need of immigration services." This is the place to go. Attorney Mansfield and Team, thank you for everything.

  a year ago
• Nayara Narimatsu· via Google

  We are so thankful to O'Neil Hauser Mansfield for everything they did for me and my husband. They did an amazing job with both of our cases and were always there for us whenever we had questions or needed advice. They're an honest, trustworthy firm that truly cares about their clients. We couldn't be happier with their help and highly recommend them!

  a year ago
• Shreya Stein· via Google

  I truly appreciate everything O'Neil Hauser Mansfield has done for me. Throughout the entire process, their communication was timely, consistent, and thorough. They took the time to explain everything clearly, answered every question, and made sure I always felt informed and supported. Their professionalism, attention to detail, and willingness to help made the entire experience smooth and straightforward. I'm truly grateful and would highly recommend this firm to anyone looking for reliable, attentive, and exceptional legal support.

  10 months ago
• Veronica Olivera· via Google

  I can't thank O'Neil Hauser Mansfield, P.C. enough for their outstanding support throughout my immigration process. They were professional, compassionate, and always there when I needed them. Attorney Joshua Mansfield and Paralegal Joan Hogan were especially wonderful, making sure I felt confident and cared for every step of the way. Whenever I had questions — by email or phone — they responded quickly and clearly, which gave me peace of mind. Thanks to their dedication and expertise, my process went smoothly and ended positively with the successful resolution of my legal status. I highly recommend their office to anyone seeking immigration solutions — you will truly be in the best hands!

  a year ago
• Aleksandra Sipic· via Google

  I had an outstanding experience working with Josh and everyone at O'Neil Hauser Mansfield office. From the beginning they showed their professionalism, knowledge and dedication. Highly responsive, always available to answer my questions and provide updates. They went above and beyond for my best interest. I'm truly grateful for Josh, Emma and Joan. I highly recommend O'Neil office to everyone who needs attentive, reliable and skilled attorney.

  10 months ago
• Mary Robles· via Google

  I want to share my deepest gratitude for the wonderful work you have done for me. Your dedication, compassion, and professionalism throughout my immigration process touched my heart more than words can say. Attorney Joshua Mansfield and Paralegal Joan Hogan were especially kind and attentive. You both guided me with such patience and care at every step. Whenever I had questions—whether by email or phone—you always answered promptly and clearly. That gave me great comfort and peace of mind. Because of your hard work and expertise, my case was resolved successfully. You made what could have been a very difficult journey so much easier, and I will always remember your support with thankfulness. I have already begun referring new clients to your firm because I trust your integrity and the quality of your work. Thank you again for everything you have done for me and my family. May God bless each of you and continue to guide your good work. With warm regards and heartfelt thanks,

  10 months ago
• Navi Hernandez· via Google

  I am very grateful for the team at O'Neil Hauser Mansfield, especially attorney Josh and paralegal Joan. From the very beginning everything felt smooth and well organized. They took the time to answer all of our questions and made sure we understood each step of the process. While legal matters can sometimes feel overwhelming, they made everything much more accessible and manageable for us. Communication was clear, and professional throughout. We always felt supported and informed. We truly appreciate their guidance and would confidently recommend their office to anyone looking for knowledgeable and attentive legal support.

  7 months ago