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International Board Certified Lactation  Consultant

"Kate was extremely knowledgable, professional, and helpful. She shared her wealth of information and experience with me when I needed it most. Her techniques and tactics were comprehensive and very helpful - I continue to use them. I highly recommend her expertise as an IBCLC."  LD

I can help.

"I wouldn’t be breastfeeding at all if it wasn’t for Kate’s careful guidance and support."  TT

"We are very grateful for how much she has helped our family and would happily recommend her to anyone who is having a child or interested in learning about breastfeeding. Thank you Kate!"  JW

Kate DiMarco Ruck IBCLC


Kate DiMarco Ruck, BA, IBCLC is an International Board Certified Lactation Consultant providing lactation support to families in the New York Metro Area and works with clients virtually, anywhere.

Kate is a warm, compassionate, and knowledgeable IBCLC trained in the Oral Habilitation of the Breastfeeding Dyad, and Rhythmic Movement and Reflexes in the Infant.  She has a holistic approach to care, teaches prenatal lactation classes, and has extensive experience working with parents struggling with: 

  • Low milk supply

  • Tongue tie, Tethered Oral Tissues, Torticollis, and other structural issues

  • Lactation after Breast/Chest Surgery/Reduction/Cancer

  • Pain/damage to nipples

  • Positioning

  • Twins/multiples

  • Latch issues

  • Slow weight gain

  • Oversupply

  • Gassy/fussy/colic

  • Food intolerances

  • Blocked ducts/mastitis/engorgement

  • IGT/hypoplasia

  • Older babies
  • Relactation

  • Parents with disabilities

  • Infants with disabilities

  • Bottle feeding, & 1x1 formula information 

  • Babies struggling to take bottles

  • Return-to-work

  • Baby Led Weaning & Transitioning to Solid Food
    ...and other lactation challenges

  • Personalized Pump Fitting and Planning



Kate works closely with parents to develop a comprehensive and supportive infant feeding plan.  She strives to provide care to clients without judgement, and helps target the unique goals of each family she works with. 


Kate has volunteered internationally within refugee communities, providing necessary breastfeeding support and aid during emergency situations.  She is an active participant in the local, national and international lactation community.  Kate formerly served on the board of NYLCA as Education/Events director.  Kate speaks and teaches in various IBCLC trainings and workshops.  She is continually attending professional conferences and trainings to keep up with the evolving field of human lactation in order to provide the best possible care for her clients.

Kate is committed to anti-racism and recognizes that explicit and implicit bias in society, especially in healthcare, causes extreme harm to communities of color and other oppressed people.  Kate humbly recognizes and acknowledges that where we are in New York City is a part of the unceded land of the Muncie Lenape people, along with other indigenous communities. She understands that the original stewards of this land had multi generational traditions of how to feed their infants, care for their children, raise their families, and gather their communities together. The intention of this recognition is part of the greater work that must be done to dismantle the ongoing legacies of settler colonialism. 


Kate is an inclusive practitioner and proudly serves all families looking for assistance with infant feeding.  She lives in Brooklyn, NY with her husband, 2 teenagers, and 2 dogs.

Speaker For Supplementing Babies Conference
Speaker For Supplementing Babies Conference

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Teaching Doulas about safe formula prep
Teaching Doulas about safe formula prep

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Speaker For Supplementing Babies Conference
Speaker For Supplementing Babies Conference

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Payment Info:

For Service Description and Pricing, please choose Home, Office or Virtual above

Payment by:
credit card
HSA FSA eligible


All online bookings require a credit card to book your visit.  You must complete your health history form and signed consents prior to our visit.

Please note:  Once you have booked your appointment, if you need to cancel or reschedule, you must do so with 24 hours notice of the appointment time, or the full fee will be charged.  No refunds for missed appointments or appointments cancelled with less than 24 hours notice.

Insurance Info:
I am an Out-Of-Network provider.  Payment is due at time of service.  I will provide a superbill for you to submit to your insurance company for reimbursement (minus travel fee for Out of Zone).  Lactation support is mandated by The Affordable Care Act.  Check with your insurance company to request pre-authorization to see an out-of-network provider.  Here's information on why most IBCLCs are out-of-network, and how to get reimbursed for your visit.


WIC. Medicaid, First Responders, Teachers, and families in need, please reach out via contact form below regarding sliding scale.

Services, Fees, and Booking



For Service Description, Pricing, Packages, and to Book Your Appointment, please choose the visit location below.  


Office and Virtual Visit PACKAGES Available!

Office Custom Pump Fitting- get personally sized for your pump to help maximize your milk supply.


If you have general questions about the services I offer, my fees and packages, and my 
availability please use the Schedule Consult Button as all of that information is available on this website and you will be able to book your appointment faster than waiting for an email response.

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