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FOR REFERRING PROVIDERS

Partner With Us in Limb Salvage and Vascular Care

An outpatient cardiovascular and vascular lab built for the cases other centers turn away. When you refer, your patient gets fast access, a minimally invasive option, and a team that communicates back to you. We treat a referral as a responsibility you've trusted us with — we do the intervention you send us, then return your patient to your care, not absorb them.

Why our numbers read differently

In BEST-CLI, the landmark randomized trial comparing bypass with endovascular therapy for chronic limb-threatening ischemia, an endovascular procedure counted as successful when the lesion was crossed, the residual narrowing was under 50%, and in-line flow reached the foot through at least one tibial artery. One open road to the foot satisfies that definition; the arteries of the foot itself did not have to be treated.

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No randomized trial has tested treating the arteries of the foot. Understand what that gap is and what it is not. It is not evidence against treating the foot — observational series that restored flow below the ankle report roughly nine limbs in ten preserved at one year. It is a gap in what has been measured.

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Our registry grades every artery we attempt, including the arteries of the foot, on the day of the procedure, with every attempt in the denominator whether or not it succeeded. When we tell you what we can do for your patient, it is a claim you can check. Registry results → · The below-the-ankle evidence →

Why refer to OCC?

Below-the-knee & pedal expertise

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Dr. Comstock and Dr. Evans are fellowship-trained interventional cardiologists whose practice is centered on below-the-knee and below-the-ankle (BTK/BTA) revascularization.

Urgent patients seen quickly

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Open wounds, sores, gangrene, a clotting or failing dialysis access, or anginal symptoms are treated as time-sensitive. Any condition is seen the same day if possible or within two business days, based on the patient's availability.

Outpatient & minimally invasive

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Most procedures performed with a minimally invasive technique and same day discharge.

We close the loop

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You receive timely communication on findings and outcomes so care stays coordinated.

When to refer?

Refer whenever a limb, an access, or a rhythm problem needs more than primary care can offer. When in doubt, call (918) 943-5303 — we would rather evaluate early than late.

Refer urgently — call same-day

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  • Ischemic rest pain — foot or toe pain at rest, often worse at night

  • Nonhealing wound or ulcer, gangrene, or any tissue loss

  • Clotted or failing dialysis access (declot / salvage)

  • Infected or rapidly worsening diabetic foot

  • TIA, amaurosis fugax, or new neuro symptoms with a carotid bruit or known stenosis

  • Syncope with suspected bradycardia, or new AF with hemodynamic instability

Refer routinely

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  • Claudication limiting function despite risk-factor and exercise therapy

  • ABI ≤ 0.90, or noncompressible ABI > 1.40 in a diabetic patient

  • Known or suspected PAD with vascular risk factors and leg symptoms

  • Chronic one-sided leg swelling / suspected iliac vein compression (May-Thurner)

  • Venous ulcer — check ABI before compression; refer if not improving

  • Resistant hypertension, FMD, or progressive CKD with suspected renal artery disease

  • Paroxysmal AF for rhythm management, cryptogenic stroke for loop-recorder evaluation, or symptomatic bradycardia for pacemaker evaluation

What we offer

Diagnosis and treatment under one roof — and when a case calls for surgery or an electrophysiology procedure, we direct it: we select the specialist, coordinate the referral, and co-manage. Your patient stays your patient.

In-house diagnostics

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  • Arterial & venous duplex ultrasound

  • Carotid duplex ultrasound

  • Pedal (foot-level) ultrasound with pedal acceleration time (PAT)

  • Echocardiography; ABI / TBI

  • Patch telemetry & ambulatory ECG monitoring

  • On-site labs (CBC, CMP, TSH)

In-house interventions

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  • Below-the-knee & pedal revascularization (angioplasty, DCB, vessel preparation, selective stenting)

  • Aortoiliac, femoropopliteal, renal & subclavian intervention 
     

  • Dialysis access: fistulogram, angioplasty, stenting, and declot.

  • Venous (iliac / May-Thurner) stenting, IVC filter placement & retrieval

  • Cardiac catheterization & PCI; carotid angiography (diagnostic)
     

  • Devices: pacemaker, ICD, CRT-D / CRT-P; TEE-guided cardioversion 
     

  • Implantable loop recorder 

HOSPITAL OUTPATIENT

HOSPITAL OUTPATIENT

OFFICE LAB

OFFICE LAB OR HOSPITAL OUTPATIENT

We direct & coordinate (referred out)
 

  • Carotid revascularization — CEA, TCAR, transfemoral CAS

  • Catheter ablation for arrhythmia

  • Structural heart — TAVR, percutaneous valve repair, and left atrial appendage occlusion

  • Common femoral artery endarterectomy

  • Surgical leg bypass — femoral-popliteal and femoral-tibial

  • Aortic aneurysm repair — EVAR and TEVAR

  • CABG and valvular surgery

We select the specialist, coordinate, and co-manage — never a bare hand-off.

OFFICE LAB

our outpatient lab ·

HOSPITAL OUTPATIENT

 hospital outpatient department  ·

OFFICE LAB OR HOSPITAL OUTPATIENT

 either, chosen by your other medical conditions  ·

OFFICE LAB, HOSPITAL OUTPATIENT, OR INPATIENT

any of the three, chosen case by case  · 

HOSPITAL — OVERNIGHT

requires an overnight stay 

How to refer?

Choose whatever is easiest for your office: Phone (918) 943-5303 · Fax (855) 312-3594 · Email info@okcvc.com · or the downloadable referral form.

What to send with the Referral?

A complete referral lets us schedule and plan the right procedure faster:
 

  • Patient demographics and insurance

  • Reason for referral and urgency

  • Current medication list — especially antiplatelet / anticoagulant therapy

  • Recent labs as applicable: CBC, CMP/BMP, HbA1c, lipid panel, TSH; eGFR / creatinine for contrast planning; BNP if heart failure

  • Prior vascular imaging: ABI/TBI, duplex ultrasound, CTA or MRA

  • Relevant procedural / surgical history (prior stents, bypass, access history)

  • Wound photos for limb-salvage, diabetic-foot, and venous-ulcer referrals

  • Preferred contact for results

What happens after you refer?

  • We schedule quickly — urgent limb and access cases are prioritized.

  • We evaluate and treat — often in the same outpatient setting, minimally invasively.

  • We report back to you — findings, what we did, and the follow-up plan.

When another center says "no", we take a closer look.

Refer your most complex limb and access cases with confidence. We'll give your patient everything we'd give our own — and keep you in the loop from referral to follow-up.

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