Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joanna N. Dalton Ayoung, MD

Obstetrics & Gynecology Physician in Oviedo, FL · enumerated 2011 · practices at Orlando Physicians Network Inc.

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

National Provider Identifier

1639468531

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Registry record

Entity type Individual (Type 1)

Name Dr. Joanna N. Dalton Ayoung

Credential MD

Sex Female

Practice address 1890 W County Road 419 Ste 2010, Oviedo, FL, 32765

Phone (407) 635-3600

Fax (321) 842-3901

Enumeration date Mar 31, 2011

Last updated in NPPES Aug 18, 2023

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 271059 (NY) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License ME151383 (FL) 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
271059	Other	NY	NYS MEDICAL LICENSE
ME151383	Other	FL	FL MEDICAL LICENSE
04533900	Medicaid	NY	-
111608800	Medicaid	FL	-

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

Where does Joanna Dalton Ayoung practice?

The practice location on file with NPPES is in Oviedo, FL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Joanna Dalton Ayoung?

The National Provider Identifier (NPI) for Joanna Dalton Ayoung is 1639468531, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Stuart Janousky Pediatrics Physician · Oviedo, FL NPI 1477544385 Sari Stender Medical Physician Assistant · Oviedo, FL NPI 1841273406 Kirk Hutjens Internal Medicine Physician · Oviedo, FL NPI 1376650895 Orlando Physicians Network Inc Family Medicine Physician · Oviedo, FL NPI 1861165185

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-18.