Daniel J Sak, DO
Daniel J Sak is a Pulmonary Disease Physician provider (Internal Medicine) practicing in Findlay, OH, registered in the NPPES registry with NPI 1568425494 since 2006. The credential DO stands for Doctor of Osteopathic Medicine. Practices at Jason S Chang MD Inc (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1568425494 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Daniel J Sak |
| Credential | DO |
| Sex | Male |
| Practice address | Findlay, OH, 45840 |
| Phone | 4194272604 |
| Fax | 4194272607 |
| Enumeration date | 2006-04-11 |
| Last updated in NPPES | 2017-02-02 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RP1001X | Pulmonary Disease Physician | Primary | 34011122 | OH |
| 207RS0012X | Sleep Medicine (Internal Medicine) Physician | Secondary | 34.011122 | OH |
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 |
|---|---|---|---|
| 112952293 | Medicaid | MI | — |
Copy-ready billing details
Provider: Daniel Sak, DO NPI: 1568425494 Taxonomy: 207RP1001X (Pulmonary Disease Physician) Address: Findlay, OH, 45840
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1083841340 | Jason S Chang MD Inc | Organization | Sleep Medicine (Psychiatry & Neurology) Physician | Findlay, OH |
Verify this record
Cross-check NPI 1568425494 against the authoritative CMS record: view Daniel J Sak on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-02-02.