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Overview

Alto Health accepts referrals and medical documents in multiple formats. Our AI platform processes unstructured documents from any source channel—email, fax, scanned documents, or direct upload.

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Supported Formats

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Image Formats

  • PNG - Portable Network Graphics
  • JPEG/JPG - Joint Photographic Experts Group

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PDF Documents

  • PDF - Portable Document Format (including scanned PDFs)

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Spreadsheets

  • CSV - Comma-Separated Values

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Text Documents

  • DOCX - Microsoft Word (Office Open XML)
  • DOC - Microsoft Word (Legacy Format)
  • TXT - Plain Text Files

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Document Requirements

  • Maximum file size: 25MB per document
  • Minimum resolution: 300 DPI recommended for OCR accuracy
  • Supported: Scanned documents, photos of referral letters
  • Maximum file size: 25MB per document
  • Supports both native PDF and scanned PDF documents
  • Multi-page PDFs fully supported
  • Maximum file size: 10MB per file
  • CSV files with structured referral data
  • Maximum file size: 10MB per file
  • Supports Microsoft Word documents (.docx, .doc)
  • Plain text files (.txt) with UTF-8 encoding

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Upload Methods

Alto Health supports multiple ingestion channels:

API Upload

Upload documents programmatically via our REST API using the POST /api/v1/pub/records/document-upload endpoint.

Email Integration

Forward referrals directly to your clinic’s dedicated Alto Health email address for automatic processing.

Drag & Drop

Upload documents manually through the Alto Health web interface with drag-and-drop support.

Fax Integration

Receive faxed referrals automatically through integrated fax-to-digital conversion.

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Best Practices

1

Use High-Quality Scans

For scanned documents, use 300 DPI or higher to ensure optimal OCR accuracy and data extraction.
2

Ensure Legibility

Verify that handwritten notes, stamps, and signatures are clearly visible before uploading.
3

Include All Pages

Upload complete referral documents with all pages, including attachments and supporting clinical information.
4

Use Native Formats When Possible

Native PDF or DOCX files provide better extraction accuracy than scanned images.

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Need Support for Other Formats?

If your clinic uses document formats not listed here, contact our support team:

Request Format Support

Email: [email protected]We evaluate format support requests based on clinical workflow needs and technical feasibility.

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Next Steps

Upload Documents

Learn how to upload referrals via API

Integration Guide

Get started with your first integration

Error Handling

Handle upload errors and validation issues