Active NPI
John David Seng, OD
- Optometrist
- Findlay, OH
National Provider Identifier
1487630943
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Optometrist
- License
- 3635 T184
- Practice address
- 800 N Main St
Findlay, OH 45840-3550 - Phone
- (419) 424-2002
- Fax
- (419) 424-5600
- NPI assigned
- Dec 16, 2005
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Optometrist | 152W00000X | 3635 T184 | OH | Primary |
Addresses
Primary practice location
800 N Main St
Findlay, OH 45840-3550
Mailing address
800 N Main St
Findlay, OH 45840-3550
Phone (419) 424-2002
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0518541 | Medicaid | OH |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in OH
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: No
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20101028000283 | OH | Practitioner - Optometry | 7517151160 | Practice locations: Findlay, OH |
Care Compare profile
Medicare Care Compare- Specialty
- Optometry
- Education
- Ohio State University - College of Optometry, 1982
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
800 N Main St
Findlay, OH 45840-3550
Phone (419) 424-2002
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 3635 | OH | MD | Chiropractor |
| 3635 T184 | OH | MD | Optometrist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1134691200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1487630943",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "800 N MAIN ST",
"city": "FINDLAY",
"state": "OH",
"postal_code": "458403550",
"telephone_number": "419-424-2002",
"fax_number": "419-424-5600"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "800 N MAIN ST",
"city": "FINDLAY",
"state": "OH",
"postal_code": "458403550",
"telephone_number": "419-424-2002",
"fax_number": "419-424-5600"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SENG",
"first_name": "JOHN",
"middle_name": "DAVID",
"name_prefix": "Dr.",
"credential": "OD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-12-16",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "152W00000X",
"taxonomy_group": "",
"desc": "Optometrist",
"state": "OH",
"license": "3635 T184",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "0518541",
"state": "OH"
}
],
"endpoints": [],
"other_names": []
}Other providers in Findlay, OH
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.