Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Darren J Sommer, D.O
Hospitalist Physician in Logan, OH · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578512356
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Registry record
Entity type Individual (Type 1)
Name Dr. Darren J Sommer
Credential D.O
Sex Male
Practice address 601 State Route 664 N, Logan, OH, 43138
Phone (740) 380-8000
Enumeration date May 9, 2006
Last updated in NPPES Jul 31, 2023
Taxonomy & licenses
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 142507 (NC) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License OS09395 (FL) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 32.010253 (OH) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 34.010253 (OH) 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 |
|---|---|---|---|
| 0063903 | Medicaid | OH | - |
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
What specialty is Darren Sommer?
Darren Sommer is registered in NPPES with the primary taxonomy of Hospitalist Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-31.