Active NPI
Chien C. Ou, MD
- Ophthalmology Physician
- Lewisburg, PA
National Provider Identifier
1790916385
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Ophthalmology Physician
- License
- MD448876
- Practice address
- 137 JPM Rd
Lewisburg, PA 17837-9313 - Phone
- (866) 995-3937
- Fax
- (570) 966-5586
- NPI assigned
- Jul 31, 2009
- 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 |
|---|---|---|---|---|
| Ophthalmology Physician | 207W00000X | MD448876 | PA | Primary |
Addresses
Primary practice location
137 JPM Rd
Lewisburg, PA 17837-9313
Mailing address
88 Hardees Dr
Mifflinburg, PA 17844-7062
Phone (570) 538-6002
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 102854464 | Medicaid | PA |
Other names 1
- Jason Ou
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | ChienOu@eccpa.ecldirect.net | Direct | BERNSTEIN, HILLIKER, HARTZELL EYE CENTER, LLP |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in PA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Ophthalmology
- Education
- Ohio State University College of Medicine, 2009
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
137 JPM Rd
Lewisburg, PA 17837-9313
Phone (866) 995-3937
Hospital & facility affiliations
- Wellspan Evangelical Community Hospital
- Upmc Williamsport
Merit-based Incentive Payment System (MIPS)
- Final score
- 75 of 100
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Cataract surgery | 604 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD448876 | PA | MD | Ophthalmology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| George E. Fava MD PC | Ophthalmology | Current | Accepting new patients |
| Bernstein Hilliker Hartzell Eye Center, LLP | Past | Accepting new patients |
Locations
875 Norman Dr
Lebanon, PA 17042
Phone (717) 272-2010
Interoperability endpoints
- cou@eccpa.intellechartdirect.net
- chienou@eccpa.ecldirect.net
Organizations & group practices 3
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Ophthalmology Physician
- Lewisburg, PA
- NPI 1942390745
-
- Ophthalmology Physician
- Lebanon, PA
- NPI 1245291848
-
- Optometrist
- Lewisburg, PA
- NPI 1275553570
Hospital & facility affiliations 8
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Lewisburg, PA
- NPI 1124076039
-
- General Acute Care Hospital
- Williamsport, PA
- NPI 1609801976
-
- Psychiatric Hospital Unit
- Williamsport, PA
- NPI 1649746488
-
- General Acute Care Hospital
- Williamsport, PA
- NPI 1740365097
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1248998400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770681600000",
"number": "1790916385",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "88 HARDEES DR",
"city": "MIFFLINBURG",
"state": "PA",
"postal_code": "178447062",
"telephone_number": "570-538-6002",
"fax_number": "570-966-5586"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "137 JPM RD",
"city": "LEWISBURG",
"state": "PA",
"postal_code": "178379313",
"telephone_number": "866-995-3937",
"fax_number": "570-966-5586"
}
],
"practiceLocations": [],
"basic": {
"last_name": "OU",
"first_name": "CHIEN",
"middle_name": "C.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2009-07-31",
"last_updated": "2026-02-10",
"certification_date": "2026-02-10",
"status": "A"
},
"taxonomies": [
{
"code": "207W00000X",
"taxonomy_group": "",
"desc": "Ophthalmology",
"state": "PA",
"license": "MD448876",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "102854464",
"state": "PA"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "ChienOu@eccpa.ecldirect.net",
"affiliation": "Y",
"affiliationName": "BERNSTEIN, HILLIKER, HARTZELL EYE CENTER, LLP",
"use": "DIRECT",
"useDescription": "Direct",
"address_1": "137 Jpm Rd",
"city": "Lewisburg",
"state": "PA",
"country_code": "US",
"postal_code": "178379313",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"first_name": "JASON",
"last_name": "OU",
"credential": "MD",
"code": "5",
"type": "Other Name"
}
]
}Other providers in Lewisburg, PA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 10, 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.