DR. THOMAS GRAHAM TROOP (M.D.) – Family Medicine Physician, NPI 1104893403

DR. THOMAS GRAHAM TROOP (M.D.) is a healthcare provider. based in Billings, Montana. specializing in FAMILY PRACTICE. They hold the professional credentials M.D.. They hold a License No. 6457 (MT). The NPI Number for DR. THOMAS GRAHAM TROOP (M.D.) is 1104893403

Main info

Male
40 Years Of Experience
Accepts Medicare Assignment
Name
DR. THOMAS GRAHAM TROOP (M.D.)
NPI
1104893403
Phone
(406) 237-3850
Address
1233 N 30TH ST
Enumeration Date
6 March 2006
Last Update Date
6 February 2019

Doctor Profile

Medical School Name
SOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
4066577000
Graduation Year
1986 (40 years ago)
PAC ID
8123011053
Group Practice PAC ID
4486712833
Professional Enrollment ID
I20040406001607
Address ID
MT591010127BI1233XSTXX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

5,041 FAMILY PRACTICE in IL

Provider Addresses for DR. THOMAS GRAHAM TROOP (M.D.)

  • Saint Vincent Healthcare, 1233, North 30th Street, Highland, Billings, Yellowstone County, Montana, 59101, United States

    BILLINGS, MT 591010127

    Phone: (406) 237-3850

    Fax: (406) 237-3855

    Type: Mailing

  • 372 230TH ST

    ALEDO, IL 612318628

    Phone: (406) 366-0148

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2004-04-06

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20040406001607IFamily PracticeMTTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99233Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes522259$0
99239Hospital discharge day management, more than 30 minutes203203$0
99232Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes11256$0
99223Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes4040$0
99497Advance care planning, first 30 minutes2318$0
View full utilization report →

Insurance plans in this area (ZIP 59101)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 4486712833View full group profile
NameSpecialtyState
-MT
Family PracticeKY
Family PracticeMT
Internal MedicineCO
Family PracticeME
Hospitalist, Internal Medicine, Internal MedicineNV
Internal MedicineMT
Physician AssistantPA
Family PracticeMI
Physician AssistantCA

Reviews

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Frequently asked questions

What is the registry number for DR. THOMAS GRAHAM TROOP (M.D.)?
The registry entry for DR. THOMAS GRAHAM TROOP (M.D.) shows NPI 1104893403.
Does the public listing show DR. THOMAS GRAHAM TROOP (M.D.) as active?
DR. THOMAS GRAHAM TROOP (M.D.)'s NPI record reflects an active status in NPPES.
What services align with DR. THOMAS GRAHAM TROOP (M.D.)'s listing?
DR. THOMAS GRAHAM TROOP (M.D.)'s public classification highlights Family Medicine Physician. Clinical services aligned with this taxonomy classification.
Can patients visit DR. THOMAS GRAHAM TROOP (M.D.) in Billings, Montana?
For routing, start with Billings, Montana for DR. THOMAS GRAHAM TROOP (M.D.), then verify phone and hours locally.
Can I export DR. THOMAS GRAHAM TROOP (M.D.)'s record?
You can download the official NPPES record; we summarize key fields for readability.

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