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Donald J Pratt, M.D.

Internal Medicine Physician in Mission Viejo, CA · enumerated 2005.

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

National Provider Identifier

1437136660

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Registry record

Entity type Individual (Type 1)
Name Donald J Pratt
Credential M.D.
Sex Male
Practice address 26800 Crown Valley Pkwy, Suite 325, Mission Viejo, CA, 92691
Phone (949) 364-6000
Fax (949) 364-9561
Enumeration date Dec 29, 2005
Last updated in NPPES Nov 9, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G48502 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
00G485020 Medicaid CA -

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 is the NPI number for Donald Pratt?
The National Provider Identifier (NPI) for Donald Pratt is 1437136660, a Type 1 (individual) record in the CMS NPPES registry.
Where does Donald Pratt practice?
The practice location on file with NPPES is in Mission Viejo, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-09.