Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Milestones of Development, Inc.

Intellectual and/or Developmental Disabilities Residential Treatment Facility in Vallejo, CA · enumerated 2007 · authorized official Cynthia Mack, Administrator.

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

National Provider Identifier

1174731061

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Milestones of Development, Inc.

Practice address 132 Terrybrook Ln, Vallejo, CA, 94591

Phone (707) 644-0496

Enumeration date May 21, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

320600000X Intellectual and/or Developmental Disabilities Residential Treatment Facility Residential Treatment Facilities Primary

Authorized official

Name Cynthia Mack

Title Administrator

Phone (707) 644-0496

Other identifiers

Identifier	Type	State	Issuer
6025713	Other	CA	EDS PIN NUMBER
LTC60048G	Other	CA	PROVIDER NUMBER

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Milestones of Development, Inc.?

Milestones of Development, Inc. is registered in NPPES as a Intellectual and/or Developmental Disabilities Residential Treatment Facility (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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.