Active NPI
Ernesto A Diaz-Ordaz, MD
- Otolaryngology Physician
- Williamsville, NY
National Provider Identifier
1114965738
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Otolaryngology Physician
- License
- 160661
- Practice address
- 180 Park Club LN
Suite 200
Williamsville, NY 14221-5263 - Phone
- (716) 634-7350
- Fax
- (716) 634-7656
- NPI assigned
- Jun 4, 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Otolaryngology Physician | 207Y00000X | 160661 | NY | Primary |
| Otology & Neurotology Physician | 207YX0901X | 160661 | NY |
Addresses
Primary practice location
180 Park Club LN
Suite 200
Williamsville, NY 14221-5263
Mailing address
199 Park Club LN Ste 500
Williamsville, NY 14221-5269
Phone (716) 845-1300
Other identifiers 4
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01442699 | Medicaid | NY | |
| 00020006003 | Other | NY | UNIVERA PROVIDER ID |
| 1008002 | Other | NY | IHA PROVIDER ID |
| 000511816002 | Other | NY | BCBS PROVIDER ID |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20071126000429 | NY | Practitioner - Otolaryngology | 1254311335 | Reassigns benefits to 1 organization |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 160661 | NY | MD | Otolaryngology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| University at Buffalo Pathologists, Inc | Current | Accepting new patients | |
| Rpci Oncology PC | Otolaryngology | Past | Accepting new patients |
Locations
100 High St
Buffalo, NY 14203
Phone (716) 632-3700
445 Tremont St
North Tonawanda, NY 14120
Phone (716) 690-2291
Organizations & group practices 2
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.
-
- Hematology & Oncology Physician
- Williamsville, NY
- NPI 1952703985
NY, Otolaryngology
-
- Anatomic Pathology & Clinical Pathology Physician
- Buffalo, NY
- NPI 1235155581
Hospital & facility affiliations 6
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
Care Compare profile
Medicare Care Compare- Specialty
- Otolaryngology
- Education
- Other, 1979
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
- Rpci Oncology, PC
Practice addresses (Care Compare)
199 Park Club LN
Williamsville, NY 14221-5269
Hospital & facility affiliations
- Kaleida Health
Merit-based Incentive Payment System (MIPS)
- Final score
- 99.06 of 100
- Quality
- 87.72
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 75.82
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149379200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1777248000000",
"number": "1114965738",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "199 PARK CLUB LN STE 500",
"city": "WILLIAMSVILLE",
"state": "NY",
"postal_code": "142215269",
"telephone_number": "716-845-1300",
"fax_number": "716-322-3372"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "180 PARK CLUB LN",
"address_2": "SUITE 200",
"city": "WILLIAMSVILLE",
"state": "NY",
"postal_code": "142215263",
"telephone_number": "716-634-7350",
"fax_number": "716-634-7656"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DIAZ-ORDAZ",
"first_name": "ERNESTO",
"middle_name": "A",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-04",
"last_updated": "2026-04-27",
"certification_date": "2026-04-27",
"status": "A"
},
"taxonomies": [
{
"code": "207Y00000X",
"taxonomy_group": "",
"desc": "Otolaryngology",
"state": "NY",
"license": "160661",
"primary": true
},
{
"code": "207YX0901X",
"taxonomy_group": "",
"desc": "Otolaryngology, Otology & Neurotology",
"state": "NY",
"license": "160661",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "01442699",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "UNIVERA PROVIDER ID",
"identifier": "00020006003",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "IHA PROVIDER ID",
"identifier": "1008002",
"state": "NY"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BCBS PROVIDER ID",
"identifier": "000511816002",
"state": "NY"
}
],
"endpoints": [],
"other_names": []
}Other providers in Williamsville, NY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 27, 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.