New Patient Appointments

Welcome to Greenhouse Natural Medicine

Please consult the information and forms below to make an appointment with us. Our team of Naturopathic Doctors look forward to meeting with you! 

Get Started With Us

Online Registration

We strive to make the process of becoming a patient as streamlined as possible with a two-step process. Please see the New Patient Registration links below. Once we receive your information, a member of our team will reach out to book your first appointment.

Medical History

For an initial appointment please bring any documentation and past medical records (within the past 12 months or most pertinent to current medical complaints).

Appointment Schedule

An initial patient appointment is typically 60 minutes. Follow-ups are scheduled for 30 minutes. More specific acute conditions typically require 15-minute appointments. (examples would be tick-bites, respiratory infections, and urinary tract infections). Please try to arrive at least five minutes prior to appointment for a new patient visit. See below for cancellation policies.

Blood Work

We offer in-office lab services as a convenience for our patients. Labs are commonly done at the time of visit, but may be scheduled as a separate appointment. Lab take 1-4 weeks to return results.

Virtual Visits

We continue to offer virtual health visits with the platform due to COVID-19, but many insurance companies are not covering online visits. Please call your insurance company to verify their coverage of virtual appointments.


Masks are optional in our office. We can supply you with one should you choose to wear one and our staff is happy to accommodate. We have a powerful air filtration system running 24 hours per day in the office for the health of our patients and staff. We also offer telemedicine visits if you are feeling ill or not  comfortable coming into the office.


We are committed to providing the highest quality, cost effective medical care. We accept all major credit cards and Health Savings Accounts. We are in-network with the companies listed below, with the individual doctors.

Before coming to see us, it’s important to contact your insurance company to verify that “Naturopathic services” are covered specifically under your plan.

Cancellation Policy

We require 24-hour notice if you need to make changes to your appointment or cancel. If you cancel less then 24 hours before appointment or you do not come to the appointment, you will be charged the full fee for the visit.

If you need to call on the weekend to cancel for the following Monday this will be honored because we know that unexpected things can happen on the weekends. Surrendering your appointment in a reasonable time allows us to fill the appointment with someone waiting.

Insurance by Provider

Dr.Julia Greenspan

Medical Director

  • Aetna
  • Anthem
  • Harvard Pilgrim
  • United Health Care / Harvard Pilgrim
  • United Health Care / Optium

Dr. Miriam Mendelsohn

Naturopathic Doctor

  • Anthem
  • Harvard Pilgrim
  • United Health Care / Harvard Pilgrim
  • United Health Care / Optium

Dr. Cynthia Hall

Naturopathic Doctor

  • Anthem
  • Harvard Pilgrim
  • United Health Care / Harvard Pilgrim
  • United Health Care / Optium

Dr. Caitlin Walker

Naturopathic Doctor

  • Anthem

Additional Fees

There are additional fees for completion of forms or letters for use outside of the patient’s medical record. This includes disability forms, letter for employment/education, FMLA forms, and year-end statements for tax purposes. Completion of forms can take-up to two weeks depending on doctor’s workload, please plan accordingly to ensure paperwork is able to be completed by your required deadlines.

Completion of disability forms, letter for employment/education, and FMLA paperwork can only be completed for patients who are currently undergoing treatment and have a scheduled follow-up appointment appropriate for the condition being treated.

Communication with our Practitioners

We strive to promptly return calls and messages within one to two business days. Our staff answer phones and responds to emails Monday-Thursday from 8AM to 4PM. Due to high volume, phone calls, emails, and other communications take time to address throughout a business day so we gently ask the following:

  • Try to limit repeat messages in a single business day. It can delay response due to increasing call/email volume.
  • Limit emails to 1-2 simple and clear questions related to current medical plan.
  • Communications requiring higher level of complexity, beyond simple questions will be referred for visit with the doctor, billed at their usual rate. If the conversation is under 10 minutes, there will be no charge for the visit.

Prescription Refill Request

  • Please contact your pharmacy to send us a refill request.
  • Allow 72 hours for doctors to complete the request.
  • Please plan accordingly based on this timeline so you will not have a gap in your medical care.

Lab Results

With patient portals becoming the norm, patients can often see their labs before the doctors. The doctors strive to have a response for the patient with non-emergent labs within five business days. These are labs related to chronic conditions which are not new onset. This represents most of our patient population.

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Our Hours

Monday 8AM - 4PM
Tuesday 8AM - 4PM
Wednesday 8AM - 4PM
Thursday 8AM - 4PM
Friday by appointment only
Saturday Closed
Sunday Closed