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ANNA FRIEDLAND HAYS M.D.
NPI 1083904379
Hospitalist in Buffalo, NY

Active since April 08, 2011PECOS Enrolled
818 ELLICOTT ST, BUFFALO, NY 14203(716) 323-2000(716) 323-0292 Get Directions Write a Review

NPPES record last updated: April 7, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 7, 2025, Feb 8, 2021 (2 updates tracked since 2021).

About Anna Friedland Hays M.d. NPPES

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

ANNA FRIEDLAND HAYS M.D. (NPI 1083904379) is an individual hospitalist provider in Buffalo, New York, licensed in New York (268198) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and maintains a secondary practice location in Williamsville.

NPPES Registry Identity

NPI1083904379
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameANNA FRIEDLAND HAYSCredential: M.D.
Location Address818 ELLICOTT STBuffalo, NY 14203-1021
Mailing Address1001 Main St Fl 5Buffalo, NY 14203-1009 · (716) 323-0225 · Fax (716) 323-0293
Phone(716) 323-2000
Fax(716) 323-0292
Sole ProprietorNo
Enumeration DateApril 8, 2011
Last NPPES UpdateApril 7, 20252 updates tracked since enumeration
NPPES CertifiedApril 7, 2025
✔ NPI 1083904379 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in NY · 268198
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedPediatricsTaxonomy 208000000X · License 268198 (NY)
818 ELLICOTT ST, Buffalo, NY 14203
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Secondary Practice Location 1

Location 11540 Maple RdWilliamsville, NY 14221-3647 · Phone (716) 568-3800 · Fax (716) 323-0292

Other Identifiers 1

Medicaid04617598NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Anna Friedland Hays M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

2

Medicare enrollment records show Anna Hays reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University At Buffalo Pediatric Associates Inc
0.1 mi
Pediatrics
1001 MAIN ST FL 4
Buffalo, NY 14203
  • Reassigned Medicare billing, New York enrollment
  • 217 clinicians in this Medicare group
NPI 1912928599 (716) 323-0225
Kaleida Health
0.1 mi
General Acute Care Hospital
818 ELLICOTT ST
Buffalo, NY 14203
  • Reassigned Medicare billing, New York enrollment
  • 676 clinicians in this Medicare group
NPI 1245365196 (716) 323-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14203 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
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

KUNAL CHADHA MD
Pediatrics
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-0220
DR. N JA HPA M.D.
Pediatrics (Neonatal-Perinatal Medicine)
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-0260
DR. JESSICA ALIOTTA DONHAUSER M.D.
Hospitalist
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-2000
ROBERT ROSS WELLIVER MD
Student in an Organized Health Care Education/Training Program
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-2000
BRIAN EVANS
Nurse Anesthetist, Certified Registered
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-6570
KAITLYN HYERS
Speech-Language Pathologist
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-2000
ALANA KOEHLER
Pediatrics
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (716) 323-2000
SUSAN J WITTMAN M.D.
Anesthesiology (Pediatric Anesthesiology)
818 ELLICOTT ST
BUFFALO, NY 14203
Erie County (443) 895-1038

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 Anna Hays's NPI number?

The NPI number for Anna Hays is 1083904379. It was assigned to this individual provider in the NPPES registry on April 8, 2011.

Where is Anna Hays located?

Anna Hays practices at 818 Ellicott St, Buffalo, NY 14203. The listed phone number is (716) 323-2000.

What is Anna Hays's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Anna Hays enrolled in Medicare?

Yes. Anna Hays is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Anna Hays's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Hays reassigns Medicare benefits to 2 organizations: University At Buffalo Pediatric Associates Inc (Buffalo, NY) and Kaleida Health (Buffalo, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Anna Hays's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Anna Hays was last updated on April 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.