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From newborns to high schoolers —

Care tailored to every child

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Clinic HoursCLINIC HOURS

Mon Tue Wed Thu Fri
09:00–12:00
(Last reception 11:30)
open
open
open
open
open
14:00–15:00
checkup/vaccination
checkup/vaccination
checkup/vaccination
checkup/vaccination
checkup/vaccination
15:00–18:00
(Last reception 17:30)
open
open
open
open
open
Sat 1st, 3rd, 5th Sun 2nd, 4th Sun

09:00–13:00
(Last reception 12:30)

open
/
open
: General consultation
: Health checks & vaccinations only
Closed
: 1st, 3rd & 5th Sundays, and public holidays

※ Last reception: weekday mornings 11:30 / afternoons 17:30 / weekends 12:30.

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ServicesMEDICAL

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How to VisitFIRST VISIT

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What to Bring

  • Individual Number Card (health insurance card)

  • Child Medical Certificate (Shōni Iryōshō)

  • Mother & Child Health Handbook (Boshi Techō)

  • Medication record book (Okusuri Techō)

Please bring your insurance card and medical certificate on your first visit.

Without insurance verification, we cannot process your visit as covered care.

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How Your Visit Works

  1. STEP1

    Book an Appointment & Complete the Online Questionnaire

    Please book your appointment first. Once confirmed, you will be asked to fill in a short online medical questionnaire.

  2. STEP2

    Arrive & Check In

    Please arrive at least 5 minutes before your appointment time.

    ※ Please present your Individual Number Card and Child Medical Certificate at reception.

  3. STEP3

    Consultation & Payment

    After seeing the doctor, please proceed to reception for payment and any follow-up appointment if needed.

    Accepted payment methods

    Cash, credit cards, IC cards (Suica etc.), Rakuten Edy, and other cashless payments.

    Accepted cards Accepted IC cards
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From the DirectorGREETING

Dr. Masaaki Mochizuki

Care that stands
beside every child
and family

Director: Masaaki Mochizuki

Hamakkoko Children's Clinic opened in April 2023 and will soon celebrate its third year. I am Masaaki Mochizuki, the clinic director. Through my career at children's specialist hospitals — spanning advanced emergency pediatrics to neonatal medicine — I became convinced that a clinic's most important role is rapid detection of abnormalities and acting as a bridge to specialist care at the right moment.

Thanks to the trust so many families have placed in us, the clinic continues to grow. In 2025 we opened a dedicated waiting room ("Hanare") for non-infectious patients, making visits more comfortable for everyone. Beyond the environment, our core belief is not simply treating today's illness, but walking alongside each child's long-term healthy development.

We offer head-shape consultations (over 300 children seen since February 2025), a psychology clinic opened in summer 2025, and from January 2026 developmental assessments using the revised Kyoto Scale of Psychological Development (ages 18 months to under 5). Our concept — "from newborns to high schoolers" — is realized through this comprehensive, personalized care.

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  • Clinic
  • Medical care
  • Clinic interior
  • Clinic interior
  • Clinic interior
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AccessACCESS

Specialty
Pediatrics
Phone
045-915-8055
Address
  • 〒224-0003
  • HabiterNord 3F-A, 1-29-24 Nakagawa Chuo,
    Tsuzuki-ku, Yokohama, Kanagawa
Nearest Stn.
1 min. walk from Center-Kita Station exit
Mon Tue Wed Thu Fri
09:00–11:30
open
open
open
open
open
14:00–15:00
vaccination / health check only
vaccination / health check only
vaccination / health check only
vaccination / health check only
vaccination / health check only
15:00–17:30
open
open
open
open
open
Sat 1,3,5th Sun 2,4th Sun

09:00–12:30

open
/
open
open
: Consultations available
vaccination / health check only
: Vaccination & health checks only
Closed
: 1st, 3rd & 5th Sundays