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STEPHEN MICHAEL CASTALDI
NPI 1982558680
Physician Assistant in Buffalo, NY

Active since February 21, 2026PECOS EnrolledAccepts Medicare Assignment
77 GOODELL ST STE 340, BUFFALO, NY 14203(716) 888-4703 Get Directions Write a Review

NPPES record last updated: February 21, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Stephen Michael Castaldi NPPES

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

STEPHEN MICHAEL CASTALDI (NPI 1982558680) is an individual physician assistant in Buffalo, New York, licensed in New York (035171) and active in the NPI registry since February 2026. The provider is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1982558680
Entity TypeIndividual
Primary Taxonomy363A00000X
Provider Legal NameSTEPHEN MICHAEL CASTALDI
Location Address77 GOODELL ST STE 340Buffalo, NY 14203-1243
Mailing Address77 Goodell St Ste 340Buffalo, NY 14203-1243
Phone(716) 888-4703
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateFebruary 21, 2026
NPPES CertifiedFebruary 21, 2026
✔ NPI 1982558680 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in NY · 035171
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
77 GOODELL ST STE 340, Buffalo, NY 14203
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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

Stephen Michael Castaldi 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 ID3577047745
PECOS Enrollment IDI20260325002761
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.

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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
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.

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.

DR. COURTNEY MCKIERNAN MD
Student in an Organized Health Care Education/Training Program
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707
DANIEL MONGEON
Emergency Medicine
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707
ELROY AN
Student in an Organized Health Care Education/Training Program
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707
MRS. FRANCESCA CIRULLI LINDE FNP-BC
Nurse Practitioner (Family)
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9715
MITCHELL FIORELLA-CRANDALL
Student in an Organized Health Care Education/Training Program
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707
ERIN ELIZABETH SCOTT MD
Emergency Medicine
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9700
DEVIN WILLIAM KOLMETZKY
Student in an Organized Health Care Education/Training Program
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707
MADISON LINDSEY MD
Student in an Organized Health Care Education/Training Program
77 GOODELL ST STE 340
BUFFALO, NY 14203
Erie County (716) 645-9707

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 Stephen Castaldi's NPI number?

The NPI number for Stephen Castaldi is 1982558680. It was assigned to this individual provider in the NPPES registry on February 21, 2026.

Where is Stephen Castaldi located?

Stephen Castaldi practices at 77 Goodell St Ste 340, Buffalo, NY 14203. The listed phone number is (716) 888-4703.

What is Stephen Castaldi's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Stephen Castaldi enrolled in Medicare?

Yes. Stephen Castaldi 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.

When was this NPI record last updated?

The NPPES record for Stephen Castaldi was last updated on February 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.