1. Home
  2. Directory
  3. Washington
  4. Mount Vernon
  5. Pathology
  6. NPI Profile

ALEXANDER CASTIELLO MD
NPI 1780628313
Pathology - Anatomic Pathology & Clinical Pathology in Mount Vernon, WA

Active since June 15, 2006PECOS Enrolled
111 S 12TH ST STE D, MOUNT VERNON, WA 98274(360) 734-2800(360) 734-3818 Get Directions Write a Review

NPPES record last updated: June 14, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Alexander Castiello Md NPPES

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

ALEXANDER CASTIELLO MD (NPI 1780628313) is an individual anatomic pathology & clinical pathology provider in Mount Vernon, Washington, licensed in Washington (IMLC.MD.61277913) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1780628313
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameALEXANDER CASTIELLOCredential: MD
Location Address111 S 12TH ST STE DMount Vernon, WA 98274-4000
Mailing Address3560 Meridian St Ste 101Bellingham, WA 98225-1731 · (360) 527-4507 · Fax (360) 527-9965
Phone(360) 734-2800
Fax(360) 734-3818
Sole ProprietorNo
Enumeration DateJune 15, 2006
Last NPPES UpdateJune 14, 2022
NPPES CertifiedJune 14, 2022
✔ NPI 1780628313 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Licenses✔ Licensed in WA · IMLC.MD.61277913✔ Licensed in AK · 192330✔ Licensed in KY · 46633✔ Licensed in TN · MD40440
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
111 S 12TH ST STE D, Mount Vernon, WA 98274
Open in Google Maps ↗

Secondary Practice Locations 2

Location 13614 Meridian St Ste 100Bellingham, WA 98225-1748 · Phone (360) 734-2800 · Fax (360) 734-3818
Location 23548 Meridian St Ste 101Bellingham, WA 98225-1710 · Phone (360) 734-2800 · Fax (360) 734-3818

Other Identifiers 1

Medicaid7100158300KY

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexander Castiello Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98274 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
$130.99 typical visit price
range $57.27 – $172.80
Typical copayment $32.74 (range $14.31 – $43.20)
Most-billed visit code 99204
Established Patient
$100.78 typical visit price
range $18.56 – $141.11
Typical copayment $25.19 (range $4.64 – $35.27)
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

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

NORTHWEST PATHOLOGY PLLC
Clinical Medical Laboratory
111 S 12TH ST STE D
MOUNT VERNON, WA 98274
Skagit County (877) 232-9924

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 Alexander Castiello's NPI number?

The NPI number for Alexander Castiello is 1780628313. It was assigned to this individual provider in the NPPES registry on June 15, 2006.

Where is Alexander Castiello located?

Alexander Castiello practices at 111 S 12th St Ste D, Mount Vernon, WA 98274. The listed phone number is (360) 734-2800.

What is Alexander Castiello's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Alexander Castiello enrolled in Medicare?

Yes. Alexander Castiello is registered in the Medicare PECOS enrollment system.

What insurance does Alexander Castiello accept?

Health plans from Oscar Insurance Company list Alexander Castiello as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alexander Castiello was last updated on June 14, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.