MARK ALEXANDER CALDERWOOD MD
NPI 1447353024
Ophthalmology in Hamilton, MT

Q: What is Mark Calderwood's NPI number?

The NPI number for Mark Calderwood is 1447353024. It was assigned to this individual provider in the NPPES registry on September 7, 2006.

Q: What is Mark Calderwood's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Calderwood was last updated on November 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.

Active since September 07, 2006PECOS Enrolled

300 N 10TH ST STE A, HAMILTON, MT 59840(406) 363-5434(406) 363-5210 Get Directions Write a Review

NPPES record last updated: November 12, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 12, 2024, May 12, 2021 (2 updates tracked since 2021).

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About Mark Alexander Calderwood Md NPPES

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

MARK ALEXANDER CALDERWOOD MD (NPI 1447353024) is an individual ophthalmology provider in Hamilton, Montana, licensed in Montana (MED-PHYS-LIC-7129) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1447353024

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameMARK ALEXANDER CALDERWOODCredential: MD

Location Address300 N 10TH ST STE AHamilton, MT 59840-5322

Mailing Address1200 Westwood DrHamilton, MT 59840-2345

Phone(406) 363-5434

Fax(406) 363-5210

Sole ProprietorYes

Enumeration DateSeptember 7, 2006

Last NPPES UpdateNovember 12, 20242 updates tracked since enumeration

NPPES CertifiedNovember 12, 2024

✔ NPI 1447353024 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in MT · MED-PHYS-LIC-7129

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

300 N 10TH ST STE A, Hamilton, MT 59840

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Other Identifiers 2

Medicaid100029272MT

Medicaid1447353024ID

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and more.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)

Mark Alexander Calderwood 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 59840 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

$130.52 typical visit price

range $56.81 – $172.26

Typical copayment $32.63 (range $14.20 – $43.06)

Most-billed visit code 99204

Established Patient

$70.82 typical visit price

range $18.24 – $140.32

Typical copayment $17.70 (range $4.56 – $35.08)

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

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

BROCK ALONZO M.D.

Ophthalmology (Glaucoma Specialist)

300 N 10TH ST STE A
HAMILTON, MT 59840

Ravalli County (406) 363-5434

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 Mark Calderwood's NPI number?

The NPI number for Mark Calderwood is 1447353024. It was assigned to this individual provider in the NPPES registry on September 7, 2006.

Where is Mark Calderwood located?

Mark Calderwood practices at 300 N 10th St Ste A, Hamilton, MT 59840. The listed phone number is (406) 363-5434.

What is Mark Calderwood's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Mark Calderwood enrolled in Medicare?

Yes. Mark Calderwood is registered in the Medicare PECOS enrollment system.

What insurance does Mark Calderwood accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Mark Calderwood 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 Mark Calderwood was last updated on November 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.