ERNESTO A DIAZ-ORDAZ MD
NPI 1114965738
Otolaryngology in Williamsville, NY

Q: What is Ernesto Diaz-ordaz's NPI number?

The NPI number for Ernesto Diaz-ordaz is 1114965738. It was assigned to this individual provider in the NPPES registry on June 4, 2006.

Q: What is Ernesto Diaz-ordaz's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Active since June 04, 2006PECOS EnrolledAccepts Medicare Assignment

94.31/100

CMS Quality Rating

180 PARK CLUB LN, SUITE 200, WILLIAMSVILLE, NY 14221(716) 634-7350(716) 634-7656 Get Directions Write a Review

NPPES record last updated: April 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Ernesto A Diaz-ordaz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ERNESTO A DIAZ-ORDAZ MD (NPI 1114965738) is an individual otolaryngology provider in Williamsville, New York, licensed in New York (160661) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Kaleida Health, and is a graduate of Other (1979).

NPPES Registry Identity

NPI1114965738

Entity TypeIndividualMale

Primary Taxonomy207Y00000X

Provider Legal NameERNESTO A DIAZ-ORDAZCredential: MD

Location Address180 PARK CLUB LN, SUITE 200Williamsville, NY 14221-5263

Mailing Address199 Park Club Ln Ste 500Williamsville, NY 14221-5269 · (716) 845-1300 · Fax (716) 322-3372

Phone(716) 634-7350

Fax(716) 634-7656

Sole ProprietorNo

Medical School CMSOtherGraduated 1979

Enumeration DateJune 4, 2006

Last NPPES UpdateApril 27, 2026

NPPES CertifiedApril 27, 2026

✔ NPI 1114965738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians

Taxonomy Code207Y00000X

License✔ Licensed in NY · 160661

Definition

An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.

Also ListedOtolaryngology · Otology & NeurotologyTaxonomy 207YX0901X · License 160661 (NY)

180 PARK CLUB LN, Williamsville, NY 14221

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Other Identifiers 4

Medicaid01442699NY

Other00020006003NY · Univera Provider Id

Other1008002NY · Iha Provider Id

Other000511816002NY · Bcbs Provider Id

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ernesto A Diaz-ordaz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1254311335

PECOS Enrollment IDI20071126000429

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

19 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Kaleida Health

Acute Care Hospitals · Buffalo, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330005

Location100 High StreetBuffalo, NY 14210 · Erie County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14221 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.40 typical visit price

range $54.87 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$68.57 typical visit price

range $17.54 – $136.14

Typical copayment $17.14 (range $4.38 – $34.03)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.31/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

78.84

Promoting Interoperability

100

Improvement Activities

Cost

68.86

Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRIAN JAMES MAY RPA C

Physician Assistant (Surgical)

180 PARK CLUB LN, STE 100
WILLIAMSVILLE, NY 14221

Erie County (716) 839-9402

LYNDSAY ANN GUTIERREZ-PANCHAL MD

Surgery

180 PARK CLUB LN
WILLIAMSVILLE, NY 14221

Erie County (716) 332-6834

EMILY A SARZYNIAK RPA-C

Physician Assistant

180 PARK CLUB LN, SUITE 100
WILLIAMSVILLE, NY 14221

Erie County (716) 839-9402

BUFFALO ENT SPECIALISTS, LLP

Otolaryngology

180 PARK CLUB LN, SUITE 200
WILLIAMSVILLE, NY 14221

Erie County (716) 634-7350

MS. ANNE E KLEIN RPA-C

Physician Assistant

180 PARK CLUB LN, SUITE 200
WILLIAMSVILLE, NY 14221

Erie County (716) 634-7350

DR. JOSEPH L MUSCARELLA JR. D.O.

Otolaryngology (Otolaryngology/Facial Plastic Surgery)

180 PARK CLUB LN, SUITE 200
WILLIAMSVILLE, NY 14221

Erie County (716) 634-7350

BUFFALO NEUROSURGERY P.C.

Durable Medical Equipment & Medical Supplies

180 PARK CLUB LN, SUITE 100
WILLIAMSVILLE, NY 14221

Erie County (716) 839-9402

GREGORY A CZAJKA RPA C

Physician Assistant

180 PARK CLUB LN, STE 100
WILLIAMSVILLE, NY 14221

Erie County (716) 839-9402

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ernesto Diaz-ordaz's NPI number?

The NPI number for Ernesto Diaz-ordaz is 1114965738. It was assigned to this individual provider in the NPPES registry on June 4, 2006.

Where is Ernesto Diaz-ordaz located?

Ernesto Diaz-ordaz practices at 180 Park Club Ln Suite 200, Williamsville, NY 14221. The listed phone number is (716) 634-7350.

What is Ernesto Diaz-ordaz's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Ernesto Diaz-ordaz enrolled in Medicare?

Yes. Ernesto Diaz-ordaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Ernesto Diaz-ordaz affiliated with any hospitals?

According to CMS data, Ernesto Diaz-ordaz is affiliated with Kaleida Health.

When was this NPI record last updated?

The NPPES record for Ernesto Diaz-ordaz was last updated on April 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.