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DR. KIRK ERNEST MITCHELL MD
NPI 1811149685
Internal Medicine - Geriatric Medicine in Longmont, CO

Active since October 10, 2008PECOS EnrolledAccepts Medicare Assignment
5390 SAINT VRAIN RD, LONGMONT, CO 80503(303) 859-9722(303) 484-3578 Get Directions Write a Review

NPPES record last updated: December 2, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 2, 2021, Nov 4, 2021, Jun 7, 2021 and 5 more (8 updates tracked since 2016).

About Dr. Kirk Ernest Mitchell Md NPPES

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

DR. KIRK ERNEST MITCHELL MD (NPI 1811149685) is an individual geriatric medicine provider in Longmont, Colorado, licensed in Colorado (DR.0049886) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of George Washington University School Of Medicine (2006).

NPPES Registry Identity

NPI1811149685
Entity TypeIndividualMale
Primary Taxonomy207RG0300X
Provider Legal NameDR. KIRK ERNEST MITCHELLCredential: MD
Location Address5390 SAINT VRAIN RDLongmont, CO 80503-8764
Mailing Address5390 Saint Vrain RdLongmont, CO 80503-8764 · (303) 859-9722 · Fax (303) 484-3578
Phone(303) 859-9722
Fax(303) 484-3578
Sole ProprietorYes
Medical School CMSGeorge Washington University School Of MedicineGraduated 2006
Enumeration DateOctober 10, 2008
Last NPPES UpdateDecember 2, 20218 updates tracked since enumeration
NPPES CertifiedDecember 2, 2021
✔ NPI 1811149685 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in CO · DR.0049886
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedFamily MedicineTaxonomy 207Q00000X · License DR.0049886 (CO), 8019A (WY)
Also ListedInternal MedicineTaxonomy 207R00000X · License DR.0049886 (CO)
5390 SAINT VRAIN RD, Longmont, CO 80503
Open in Google Maps ↗

Secondary Practice Locations 4

Location 11230 Tenderfoot Hill Rd Ste 255Colorado Springs, CO 80906-7393 · Phone (720) 678-9868 · Fax (720) 678-9860
Location 29195 Grant St Ste 305Thornton, CO 80229-4386 · Phone (720) 678-9868 · Fax (720) 678-9860
Location 3400 Indiana St Ste 280Golden, CO 80401-5069 · Phone (720) 678-9868 · Fax (720) 678-9860
Location 41421 S Potomac St Ste 330Aurora, CO 80012-4512 · Phone (720) 678-9868 · Fax (720) 678-9860

Other Identifiers 1

Medicaid08227519CO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Kirk Ernest Mitchell Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7517016264
PECOS Enrollment IDI20250331002124
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 Reassignments

3

Medicare enrollment records show Kirk Mitchell reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Compassionate Concierge Physicians, LLC
Same address
Family Medicine
5390 SAINT VRAIN RD
Longmont, CO 80503
  • Reassigned Medicare billing, Colorado, Idaho and Wyoming enrollments
  • 4 clinicians in this Medicare group
NPI 1003452301 (720) 986-0850
Harmony Medical Group, LLC
27 mi
Family Medicine
2244 E HARMONY RD STE 110
Fort Collins, CO 80528
  • Reassigned Medicare billing, Colorado enrollment
  • 12 clinicians in this Medicare group
NPI 1902517626 (970) 226-1117
Rural Physicians Group-Pannu PLLC
42 mi
Hospitalist
5575 DTC PKWY STE 225
Greenwood Village, CO 80111
  • Reassigned Medicare billing, Colorado and Wyoming enrollments
  • Also billed through NPI 1891236584 (Wyoming)
  • 76 clinicians in this Medicare group
NPI 1861808719 (303) 390-1924

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80503 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
$174.82 typical visit price
range $58.06 – $174.82
Typical copayment $43.70 (range $14.51 – $43.70)
Most-billed visit code 99205
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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.

Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) A4314
DME-Orthotic Devices · category DF000N
3 suppliers28 claims32 services$23.44 avg. paid by Medicare
Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each A4357
DME-Orthotic Devices · category DF000N
3 suppliers31 claims38 services$9.32 avg. paid by Medicare
Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, 4 x 4 inches or smaller, each A4414
DME-Orthotic Devices · category DF010N
1 supplier13 claims260 services$4.65 avg. paid by Medicare
Ostomy pouch, closed; for use on barrier with non-locking flange, with filter (2 piece), each A4419
DME-Orthotic Devices · category DF010N
1 supplier13 claims780 services$1.54 avg. paid by Medicare
Manual wheelchair accessory, anti-tipping device, each E0971
DME-Wheelchairs · category DD021N
1 supplier12 claims24 services$2.54 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
3 suppliers16 claims16 services$91.04 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

COMPASSIONATE CONCIERGE PHYSICIANS, LLC
Family Medicine
5390 SAINT VRAIN RD
LONGMONT, CO 80503
Boulder County (720) 986-0850
ASHLEY ZAMORA LPN
Licensed Practical Nurse
5390 SAINT VRAIN RD
LONGMONT, CO 80503
Boulder County (970) 518-8781

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 Kirk Mitchell's NPI number?

The NPI number for Kirk Mitchell is 1811149685. It was assigned to this individual provider in the NPPES registry on October 10, 2008.

Where is Kirk Mitchell located?

Kirk Mitchell practices at 5390 Saint Vrain Rd, Longmont, CO 80503. The listed phone number is (303) 859-9722.

What is Kirk Mitchell's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Kirk Mitchell enrolled in Medicare?

Yes. Kirk Mitchell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Kirk Mitchell's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kirk Mitchell reassigns Medicare benefits to 3 organizations: Compassionate Concierge Physicians, LLC (Longmont, CO), Harmony Medical Group, LLC (Fort Collins, CO) and Rural Physicians Group-Pannu PLLC (Greenwood Village, CO). Each 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 Kirk Mitchell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Kirk Mitchell was last updated on December 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.