DR. GRANT MICHAEL WARMOUTH (MD) – Clinical Neurophysiology Physician, NPI 1376757344

DR. GRANT MICHAEL WARMOUTH (MD) is a healthcare provider. based in Longmont, Colorado. specializing in NEUROLOGY. They hold the professional credentials MD. They hold a License No. 2007011386 (MO). The NPI Number for DR. GRANT MICHAEL WARMOUTH (MD) is 1376757344

Main info

Male
23 Years Of Experience
Accepts Medicare Assignment
Name
DR. GRANT MICHAEL WARMOUTH (MD)
NPI
1376757344
Phone
(303) 776-5298
Address
1511 ONYX CIR
Enumeration Date
9 May 2007
Last Update Date
20 October 2025

Doctor Profile

Medical School Name
INDIANA UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
3037765298
Graduation Year
2003 (23 years ago)
PAC ID
3476687658
Group Practice PAC ID
2860734597
Professional Enrollment ID
I20180112000221
Address ID
CO805047805LO1511XCIRX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience85
Completeness85
Years active:19State licenses:3Digital endpointsOther names

505 NEUROLOGY in CO

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Provider Addresses for DR. GRANT MICHAEL WARMOUTH (MD)

  • 1511, Onyx Circle, Longmont, Boulder County, Colorado, 80504, United States

    LONGMONT, CO 805047805

    Phone: (303) 776-5298

    Fax: (303) 682-2785

    Type: Mailing

  • 13377 TRAVERTINE LN

    RENO, NV 895115946

    Phone: (303) 776-5298

    Type: Location

  • 1908 THOMES AVE STE 12550

    CHEYENNE, WY 820013527

    Phone: (303) 776-5298

    Fax: (303) 682-2785

    Type: Mailing

  • 1511 Onyx Cir

    Longmont, CO 805047805

    Phone: (303) 776-5298

    Type: Location

  • 1908 Thomes Ave Ste 12550

    Cheyenne, WY 820013527

    Phone: (303) 776-5298

    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: 2024-02-07

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking 2 Medicare enrollment records; no due dates published yet.

Enrollment records

2

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
I20180112000221INeurologyCOTBD
I20240207002208INeurologyNVTBD

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
G0453Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)1,036398$0
95870Needle measurement of electrical activity in arm, leg, trunk or head muscles, limited study440199$0
95938Placement of skin electrodes and measurement of stimulated sites on arms and legs401399$0
95861Needle measurement of electrical activity in arm or leg muscles, 2 extremities234234$0
95939Placement of skin electrodes and measurement of central motor stimulation in arms and legs149147$0
View full utilization report →

Insurance plans in this area (ZIP 80504)

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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: 2860734597View full group profile
NameSpecialtyState
N E U R O L O G YCA
N E U R O L O G YIN
N E U R O L O G YCA
N E U R O L O G YCO
N E U R O L O G YWY
N E U R O L O G YWY
N E U R O L O G YFL

Reviews

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Frequently asked questions

What NPI should I save for DR. GRANT MICHAEL WARMOUTH (MD)?
Save NPI 1376757344 if you need a stable reference for DR. GRANT MICHAEL WARMOUTH (MD).
Is DR. GRANT MICHAEL WARMOUTH (MD)'s enrollment marked active?
An active flag here means the NPI record is not in a deactivated state.
What does DR. GRANT MICHAEL WARMOUTH (MD) treat or focus on?
Patients typically see DR. GRANT MICHAEL WARMOUTH (MD) under the specialty Clinical Neurophysiology Physician. Clinical services aligned with this taxonomy classification.
Where is DR. GRANT MICHAEL WARMOUTH (MD)'s primary listing?
We display Longmont, Colorado because that is what the record indicates for DR. GRANT MICHAEL WARMOUTH (MD).
Does Medicare enrollment show here?
Medicare enrollment screens are separate from the basic NPI extract shown here.

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