East Side Clinical Laboratory

Patient billing and financial help

Find billing teams, financial-assistance programs and payment correspondence addresses. A bill-payment address is not a claims, records or specimen destination.

Location records

43 location records. Each record retains its published address and contact details.

Different source programs can refer to the same physical place. Counts describe location records and do not measure unique facilities.

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patient billing

Billing inquiries and mailed payments

Official page read
Phone888-403-6673Fax

888-403-6695

Published hours

Monday–Friday, 9:30 AM–6 PM EST (published wording).

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
East Side Clinical Laboratory, Billing Department, PO Box 411579, Boston, MA 02241-1579

Checks payable to East Side Clinical Laboratory, per Pay By Mail instructions.

Billing fax is confirmed in the expanded Contact Us billing section. Page says payments are not accepted at the corporate location; in-person payments are directed to patient service centers.

Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

patient assistance

Financial-assistance application and Patient Support

Official page read
Phone888-403-6673Fax

888-403-6695

Published hours

Not published in this record

Product, plan and location

Confirm the exact product or service
National contact — confirm product and location

Mailing address
East Side Clinical Laboratory, Accounts Receivable Department, Attention: Patient Support, PO Box 411579, Boston, MA 02241

Return completed financial-assistance application and required supporting documentation, per application page 1.

Current assistance page links application [43304]. It publishes phone, fax and application mail; no application email is printed. Copyright 2024 footer is not an issuance date. Eligibility requires laboratory review.

Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

Help the next office

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Call preparation · editorial guide

Make the call count.

Find billing teams, financial-assistance programs and payment correspondence addresses. A bill-payment address is not a claims, records or specimen destination.

Have ready in your secure workspace

  • Lab or provider bill and relevant insurance explanation, kept privately
  • Existing billing or assistance reference
  • Authorized representative information if required

Questions to resolve

  • Is this a bill, insurance explanation or assistance application?
  • Which department reviews the balance or assistance request?
  • What written confirmation will document the next step?

This is a general administrative checklist, not payer policy or advice about a particular patient. Confirm the current plan instructions.

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A request does not create an account or start a call. Use business contact information only. No patient information.

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