Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Trayton B. Mains, D.O
Rheumatology Physician in Lima, OH · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720217383
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Registry record
Entity type Individual (Type 1)
Name Trayton B. Mains
Credential D.O
Sex Male
Practice address 825 W Market St Ste 260, Lima, OH, 45805
Phone (419) 996-4003
Fax (419) 996-5276
Enumeration date Jul 3, 2009
Last updated in NPPES May 17, 2022
Taxonomy & licenses
207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 34012761 (OH) Primary
207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 03663 (KY) Secondary
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 |
|---|---|---|---|
| 7100305420 | Medicaid | KY | - |
| 0106624 | 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
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.
What specialty is Trayton Mains?
Trayton Mains is registered in NPPES with the primary taxonomy of Rheumatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Joel Shanklin Plastic and Reconstructive Surgery Physician · Lima, OH NPI 1851398580 Amy Mestemaker Hospice and Palliative Medicine (Internal Medicine) Physician · Lima, OH NPI 1831180959 Deena Hassuna Rheumatology Physician · Lima, OH NPI 1023253077 Brittany Leininger Family Nurse Practitioner · Lima, OH NPI 1093168916 Ashley Lee Family Nurse Practitioner · Lima, OH NPI 1144730714
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-17.