Compassionate care,
exceptional medicine

Walk-ins & Scheduled Appointments Welcome

We see scheduled appointments, walk-ins, urgent care, and emergencies!

We are here to service the cities of Milwaukee, WI, Wauwatosa, WI, Brookfield, WI, West Allis, WI, Menomonee Falls, WI, New Berlin, WI, Elm Grove, WI, Waukesha, WI, Greenfield, WI, Germantown, WI and more!

We are a unique animal hospital. Our main priority from 10am-10pm Monday – Sunday is to provide priority services to walk-ins and urgent care.  We accept scheduled wellness appointments 8am-4pm Mondays-Thursdays. Our office is open from 8am to 10pm Monday-Friday and 10am to 10pm Saturday and Sunday. At Mayfair Animal Hospital – ER our focus is to be available to provide exceptional wellness care and timely  emergency care for your pets. 

Hear what our clients are saying about us

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★★★★★ So grateful for the expertise and care we have received here. The responsiveness and ability to set our dog on track to live her best life has been wonderful. Really appreciate the excellent customer service and how Dr G has explained our dogs condition and progression so clearly.Tyra H.Tyra H. ★★★★★ They have taken very good care of our fur babiesLa Kesha L.La Kesha L. ★★★★★ I have been taking my dog here for years now. The staff is always so kind and helpful. They are super knowledgeable and understanding. They have helped me through many scenarios with my dogs. I recommend them to everyone.Aftan M.Aftan M. ★★★★★ Kind and gentle, the staff here always take good care of my sweet rescue kitty. We have been taking our cat here since we adopted him more than 10 years ago - at the recommendation of Elmbrook Humane Society. They are available 24 hours a day and ready for both emergencies and healthy pet care.Christine M.Christine M. ★★★★★ Highly recommend Mayfair Animal Wellness Clinic! The location is super convenient with ample parking. The staff is kind and courteous and genuinely cares for the health and well-being of my pet. They do such a good job making my dog - and me - feel comfortable and safe, providing plenty of treats and love, and thorough explanations and options for diagnoses and treatment. We’ve been patients since we rescued my dog over 5 years ago and have been so pleased with the level of service and support we’ve consistently received. If you are in need of medical care for your pet, consider Mayfair Animal Wellness Clinic!Monica R.Monica R. ★★★★★ I am so overwhelmingly thankful for this clinic. I have been bringing my dog, Loki, here and at the ER for numerous reasons over the last few years and he has always received outstanding care. I have always felt that his health and wellness is truly a top priority at Mayfair and I am so fortunate that I can look up to them for everything--from suspicious eye boogers to major surgeries. I trust every single vet and tech in that building and I know if my ole' boy could say "thank you" to each and every one of them, he absolutely would. Thanks to their swift action on Loki's surgery he may still have an opportunity to run around out in the sun before it gets cold again. Truly blessed to know I can count on them.Heather P.Heather P. ★★★★★ Wonderful facility and complete staff was excellent! From start to finish All were fabulous! My wife an d I ‘and’ our lil puppy were well taken care of! From the phone cal and front desk and all else including the wonderful Dr. Very accommodating, knowledgeable, compassionate can’t say enough!!! Way over and above the couple places we were previously!!! We were referred there by a wonderful nurse At Compassionate Veterinary Clinic in New Berlin!!! Thanx to her and Thank You ALL At Mayfair Animal Wellness Clinic and ER!!!🙏🏻👍🏻👌🏻😉🫶🏻 GREG n Suzie!😉👍🏻💞Greg Y.Greg Y. ★★★★★ The doctors and staff at the Mayfair Animal Wellness Clinic have been extremely helpful in caring for my pets. They are all very knowledgeable and seek out the best care for your furry loved ones.Pong M.Pong M. ★★★★★ Extremely helpful and knowledgeable clinic for rabies tests and export of cats to rabies-free areas. They went above and beyond to make sure our kitties were taken care of, even emergency mailing/overnighting documents to another country.Melissa Thorsson (Lawyer Nak M.Melissa Thorsson (Lawyer Nak M. ★★★★★ Dr. Greycarek is great! Her holistic approach and recommendations (like acupuncture) have really helped my dog! The staff is kind and always smiling too! I look forward to going back with my other pets!Ellie K.Ellie K. ★★★★★ Having a mini zoo, some with special needs; it's really important to find vets that care more about the time spent and not the money spent on the fur babies. I thank the wellness staff often and recommend them every chance we get!Bethany B.Bethany B.js_loader


10:00am - 10:00pm


10:00am - 10:00pm


10:00am - 10:00pm


10:00am - 10:00pm


10:00am - 10:00pm


10:00am - 10:00pm


10:00am - 10:00pm

* Please call ahead, as availability may vary

Our Services

We understand that a pet is part of the family. Our goal is to provide each one with a long, healthy and happy life. The day your pet enters our hospital it becomes part of our family too. From new puppy and kittens to graying seniors, we are there every step of the way. Our comprehensive suite of veterinary services ensures that every aspect of their wellbeing is given the excellent care they deserve.

What's Next

  • 1

    Call us or schedule an appointment online.

  • 2

    Meet with a doctor for an initial exam.

  • 3

    Put a plan together for your pet.

Friendly staff, friendly and knowledgeable doctor (Dr. Robin Johnson). We felt confident and comfortable having our precious family cat in their care. If and when we need vet care at an hour when our regular vet is unavailable, we will definitely go back to this facility.

Barry M.

We had a great experience at the hospital. All staff were very tentative to my cat’s needs and shared multiple options for treatment and preventative care. The procedure that was recommended was quick, and they provided details on care and medication. Thank you!

Sarah S.

Excellent experience! The staff was not only friendly but very welcoming. I will definitely return for any of my dogs needs. Thank you guys for your help!

Matthew H.

Great service at a reasonable price. I especially appreciate the 24/7 option for busy pet owners. I also was consulted each step of the way, which included cost considerations too. Thank You!

Sandy S.

This was the first time visiting the Animal ER. My husband and I were very impressed with their service! Everyone was super friendly, professional and helpful. I highly recommend this clinic! Marley is doing great since her surgery! I will be letting my friends and family to go here!

Kim M.