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PROVIDER PROFILE · NPI 1033117981

Claiborne CallahanM.D.

PRACTICEFLINTON CALLAHAN II M.D. & ASSOCIATES INCSee all providers at this practice →
OphthalmologyLeesburg, VAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$353
Payment records
12
By payment type
Food and Beverage$353
PRESCRIBING · PART D · 2024
Total Rx claims
866
Beneficiaries
—
Total drug cost
$234K
Distinct drugs
18
Brand share
42.4%
Top prescribed drugs
Timolol Maleate179 claims
Bimatoprost83 claims
Dorzolamide Hcl/Timolol Maleat77 claims
Latanoprost67 claims
Travoprost66 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,837
Unique beneficiaries
—
Total services
2,170
Distinct HCPCS
12
Medicare payment
$167K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 445 Ophthalmology providers in VA — below median (cohort median 2,782).
REFERRAL NETWORK

Where Claiborne Callahan's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 14 inbound referrers · 22 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
INOVA HEALTH CARE SERVICES110178
Sunrise Medical Laboratories, Inc.
Clinical Laboratory · Hicksville, NY
84137
Quest Diagnostics Incorporated Md
Clinical Laboratory · Baltimore, MD
70129
Inova Loudoun Ambulatory Surgery
Ambulatory Surgical Center · Leesburg, VA
4273
William Knudson
Podiatry · Leesburg, VA
3852
BELOTE, ROBERT2369
SOLSTAS LAB PARTNERS GROUP LLC1956
Michael Wenzel
Family Practice · Purcellville, VA
1633
Tariq Aziz
Cardiology · Leesburg, VA
1422
MARSH, NICHOLAS1425
Annette Hudler
Internal Medicine · Purcellville, VA
1227
Quest Diagnostics Nichols Institute, Inc.
Clinical Laboratory · Chantilly, VA
1112
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
INOVA HEALTH CARE SERVICES110173
Quest Diagnostics Incorporated Md
Clinical Laboratory · Baltimore, MD
75135
Sunrise Medical Laboratories, Inc.
Clinical Laboratory · Hicksville, NY
73114
Inova Loudoun Ambulatory Surgery
Ambulatory Surgical Center · Leesburg, VA
72249
William Knudson
Podiatry · Leesburg, VA
4455
Laboratory Corporation Of America Holdings
Clinical Laboratory · Burlington, NC
4458
Angelica Matney
Certified Registered Nurse Anesthetist (CRNA) · Leesburg, VA
41159
BELOTE, ROBERT3063
MARSH, NICHOLAS2677
Anil Patel
Internal Medicine · Leesburg, VA
1742
Neven Ujevic
Internal Medicine · Leesburg, VA
1639
Scott Nagell
Family Practice · Leesburg, VA
1522
Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.