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ROBERT D MARKS MD
NPI 1598711673
Family Medicine in Ennis, MT

Active since May 26, 2006PECOS Enrolled
305 E MAIN ST, ENNIS, MT 59729(406) 682-4223(406) 682-3874 Get Directions Write a Review

NPPES record last updated: May 29, 2013. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Robert D Marks Md NPPES

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

ROBERT D MARKS MD (NPI 1598711673) is an individual family medicine provider in Ennis, Montana, licensed in Montana (5291) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1598711673
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameROBERT D MARKSCredential: MD
Location Address305 E MAIN STEnnis, MT 59729-9043
Mailing Address305 N. MainEnnis, MT 59729 · (406) 682-4223 · Fax (406) 682-3874
Phone(406) 682-4223
Fax(406) 682-3874
Sole ProprietorYes
Enumeration DateMay 26, 2006
Last NPPES UpdateMay 29, 2013
✔ NPI 1598711673 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in MT · 5291
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
305 E MAIN ST, Ennis, MT 59729
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Other Identifiers 3

Medicaid0013858MT
Medicare ID-Type Unspecified000080067MT
Medicare UPIND96330

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Robert D Marks 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 59729 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
$87.97 typical visit price
range $56.81 – $172.26
Typical copayment $21.99 (range $14.20 – $43.06)
Most-billed visit code 99203
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
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.

Referred Medical Equipment & Supplies CMS DME claims 7

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
2 suppliers14 claims33 services$6.81 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
3 suppliers11 claims11 services$74.76 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers11 claims66 services$2.93 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier24 claims24 services$17.98 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier36 claims36 services$101.72 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers13 claims13 services$185.08 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Robert Marks's NPI number?

The NPI number for Robert Marks is 1598711673. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Where is Robert Marks located?

Robert Marks practices at 305 E Main St, Ennis, MT 59729. The listed phone number is (406) 682-4223.

What is Robert Marks's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Robert Marks enrolled in Medicare?

Yes. Robert Marks is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Robert Marks was last updated on May 29, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.