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Greentree Health

Family Medicine Physician in Austin, TX · enumerated 2013 · authorized official Nathalie Blackstock, Director, Billing.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033457031

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Registry record

Entity type Organization (Type 2)
Legal business name Greentree Health
Practice address 8900 Shoal Creek Blvd Ste 200, Austin, TX, 78757
Phone (512) 323-6900
Fax (512) 524-2251
Enumeration date Jan 25, 2013
Last updated in NPPES Jan 25, 2013

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers · License 06485 (TX) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License L8125 (TX) Primary

Authorized official

Name Nathalie Blackstock
Title Director, Billing
Phone (512) 323-6900

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What type of organization is Greentree Health?
Greentree Health is registered in NPPES as a Family Medicine Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-25.