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DR. IAN BLAIKIE MATHIES MD
NPI 1477256758
Emergency Medicine in Stony Brook, NY

Active since March 24, 2023PECOS Enrolled
101 NICOLLS ROAD, HSC LEVEL 4 ROOM 050, STONY BROOK, NY 11794(631) 444-3880(631) 444-3919 Get Directions Write a Review

NPPES record last updated: September 5, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 5, 2026, Mar 24, 2023 (2 updates tracked since 2023).

About Dr. Ian Blaikie Mathies Md NPPES

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

DR. IAN BLAIKIE MATHIES MD (NPI 1477256758) is an individual emergency medicine provider in Stony Brook, New York, licensed in New York (346732) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS, is affiliated with Samaritan Medical Center, and maintains a secondary practice location in Stony Brook.

NPPES Registry Identity

NPI1477256758
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. IAN BLAIKIE MATHIESCredential: MD
Location Address101 NICOLLS ROAD, HSC LEVEL 4 ROOM 050Stony Brook, NY 11794
Mailing Address60 Woodsome RdBabylon, NY 11702-3318 · (631) 943-9051
Phone(631) 444-3880
Fax(631) 444-3919
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateMarch 24, 2023
Last NPPES UpdateSeptember 5, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 5, 2026
✔ NPI 1477256758 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in NY · 346732
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
101 NICOLLS ROAD, Stony Brook, NY 11794
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Secondary Practice Location 1

Location 1101 Nicolls Road, HSC Level 4 Room 050Stony Brook, NY 11794 · Phone (631) 444-3880 · Fax (631) 444-3919

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ian Blaikie Mathies Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8921564832
PECOS Enrollment IDI20260730005764
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 Reassignment

Medicare enrollment records show Ian Mathies reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Oldham County Emergency Physicians, LLC
676 mi
Emergency Medicine
1025 NEW MOODY LN
La Grange, KY 40031
  • Reassigned Medicare billing, Kentucky enrollment
  • 77 clinicians in this Medicare group
NPI 1508726035 (502) 222-5388

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

Hospital Affiliations CMS Care Compare

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

Samaritan Medical Center

Acute Care Hospitals · Watertown, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330157
Location830 Washington StreetWatertown, NY 13601 · Jefferson County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11794 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

MUZAMMIL KHAN MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
101 NICOLLS ROAD, HSC T16-020
STONY BROOK, NY 11794
Suffolk County (631) 444-8478
JUSTIN ALEXANDER BELL MD
Anesthesiology
101 NICOLLS ROAD, DEPARTMENT OF ANESTHESIOLOGY, HSC LEVEL 4, ROOM 060
STONY BROOK, NY 11794
Suffolk County (631) 444-2975
PHILLIP YEUN
Student in an Organized Health Care Education/Training Program
101 NICOLLS ROAD, HEALTH SCIENCE CENTER T16, ROOM 020
STONY BROOK, NY 11794
Suffolk County (631) 444-7411
PRIYANKA RAMACHANDRA MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS ROAD, DEPARTMENT OF SURGERY, HSC T-19, 030
STONY BROOK, NY 11794
Suffolk County (631) 444-1791
DR. GABRIELLA NICOLE PINHO M.D.
Obstetrics & Gynecology
101 NICOLLS ROAD, HSC 9, ROOM 020
MOUNT SINDAI, NY 11794
Suffolk County (631) 444-3987
DR. BAHAA E DAOUD MD
Anesthesiology
101 NICOLLS ROAD, HSC LEVEL 4 ROOM 60
STONY BROOK, NY 11794
Suffolk County (631) 444-2078
DR. ALLISON PERNICE MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS ROAD, DEPARTMENT OF SURGERY, HSC T-19, 030
STONY BROOK, NY 11794
Suffolk County (631) 444-1791
DR. DAWEI WU DO
Student in an Organized Health Care Education/Training Program
101 NICOLLS ROAD, HEALTH SCIENCES CENTER LEVEL 4, ROOM 176
STONY BROOK, NY 11794
Suffolk County (631) 638-8517

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 Ian Mathies's NPI number?

The NPI number for Ian Mathies is 1477256758. It was assigned to this individual provider in the NPPES registry on March 24, 2023.

Where is Ian Mathies located?

Ian Mathies practices at 101 Nicolls Road Hsc Level 4 Room 050, Stony Brook, NY 11794. The listed phone number is (631) 444-3880.

What is Ian Mathies's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Ian Mathies enrolled in Medicare?

Yes. Ian Mathies is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Ian Mathies's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ian Mathies reassigns Medicare benefits to Oldham County Emergency Physicians, LLC (La Grange, KY). The 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 Ian Mathies's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ian Mathies affiliated with any hospitals?

According to CMS data, Ian Mathies is affiliated with Samaritan Medical Center.

When was this NPI record last updated?

The NPPES record for Ian Mathies was last updated on September 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.