Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sean A Chrystal, DO
Hospitalist Physician in Dyer, IN · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598968406
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Registry record
Entity type Individual (Type 1)
Name Sean A Chrystal
Credential DO
Sex Male
Practice address 24 Joliet St, Dyer, IN, 46311
Phone (219) 852-1524
Fax (219) 933-2288
Enumeration date Jun 7, 2007
Last updated in NPPES Apr 18, 2025
Taxonomy & licenses
207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License 02003500A (IN) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 02003500A (IN) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 02003500A (IN) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 02003500A | Other | IN | LICENSE |
| 036-117518 | Other | IL | LICENSE |
| 200944290 | Medicaid | IN | - |
| 036117518 - CODE 4 | Medicaid | IN | - |
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.
Frequently asked questions
How do I verify Sean Chrystal's NPI record?
Cross-check NPI 1598968406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1598968406 active?
Yes, as of the latest NPPES snapshot, NPI 1598968406 is active (record last updated 2025-04-18).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-18.