Active NPI
Joseph H Oyer, M.D.
- Specialist
- Worcester, MA
National Provider Identifier
1700828639
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Specialist
- License
- M44106
- Practice address
- 48 Elm St
Worcester, MA 01609-2541 - Phone
- (508) 757-0330
- NPI assigned
- Jun 12, 2006
- 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 |
|---|---|---|---|---|
| Specialist | 174400000X | M44106 | MA | Primary |
Addresses
Primary practice location
48 Elm St
Worcester, MA 01609-2541
Mailing address
48 Elm St
Worcester, MA 01609-2541
Phone (508) 757-0330
Other identifiers 2
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0010298 | Medicaid | MA | |
| 997402 | Other | MA | NETWORK HEALTH |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| M44106 | MA | MD | Specialist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1150070400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1700828639",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "48 ELM ST",
"city": "WORCESTER",
"state": "MA",
"postal_code": "016092541",
"telephone_number": "508-757-0330"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "48 ELM ST",
"city": "WORCESTER",
"state": "MA",
"postal_code": "016092541",
"telephone_number": "508-757-0330"
}
],
"practiceLocations": [],
"basic": {
"last_name": "OYER",
"first_name": "JOSEPH",
"middle_name": "H",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-12",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "174400000X",
"taxonomy_group": "",
"desc": "Specialist",
"state": "MA",
"license": "M44106",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "0010298",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "NETWORK HEALTH",
"identifier": "997402",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}Other providers in Worcester, MA
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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.