NPPES file of Aug 9, 2026

Claiborne Moore Callahan, M.D.

Ophthalmology Physician · Leesburg, VA

Claiborne Moore Callahan, M.D. is an ophthalmology physician with a practice address in Leesburg, Virginia, and NPI 1033117981, issued on Jul 13, 2005. Check the license (Virginia 0101250311, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033117981
Name
Claiborne Moore Callahan
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
0101250311 VA
Self-reported in NPPES; status is on the state search
Practice location
20 Davis Ave SW, Leesburg, VA 20175
Phone
(703) 777-1244
Enumerated
Jul 13, 2005
Record last updated
Jan 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(540) 338-9137
Medicare enrollment
Enrolled (PECOS I20230508000775); accepts Medicare assignment
Medical or professional school
University Of Virginia School Of Medicine, 2000
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 20 Davis Ave SW

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Flinton Callahan, M.D.Ophthalmology Physician1063411817

Verify Claiborne Moore Callahan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersVirginia Department of Health Professions
    Search for license 0101250311
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Virginia license search

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36% fewer Medicare Part D claims than the average ophthalmology physician in 2024

965 Medicare Part D claims for 276 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.

  1. Claiborne Callahan965
  2. Specialty average1,518

Most prescribed

  1. Timolol Maleate179 claims
  2. Lumigan83 claims
  3. Dorzolamide-Timolol77 claims
  4. Latanoprost67 claims
  5. Travoprost66 claims
  6. Neomycin-Polymyxin-Dexameth48 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 87.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costout of 100 · 30%58.0
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $353.00

12 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Claiborne Callahan$353.00
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Jacqueline D Griffiths MD PCReston, VA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ophthalmology Physician providers in Virginia

There are 592 ophthalmology physician records in Virginia.

Other ophthalmology physician records in Virginia

  1. Benjamin Abramowitz, MDManassas, VA1376800078
  2. Eric Adams, MDNorfolk, VA1164417077
  3. Rohit Adyanthaya, MDNorfolk, VA1710023411
  4. George Agritellis, M.D.Winchester, VA1790728202
  5. Sameer Ahmad, M.D.Herndon, VA1326003401
  6. Ahmed Ahmed, MDCharlottesville, VA1003443680
  7. Osama Ahmed, MDFairfax, VA1629646203
  8. Shazia Ahmed, MDArlington, VA1306012950
  9. Haresh Ailani, M.D.Springfield, VA1992964837
  10. Alaa Al-Dabbagh, MDNorfolk, VA1154993905

Common questions

What is Claiborne Moore Callahan, M.D.'s NPI number?

Claiborne Moore Callahan, M.D.'s National Provider Identifier (NPI) is 1033117981, issued on Jul 13, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Claiborne Moore Callahan, M.D. located?

The NPPES record lists a practice address at 20 Davis Ave SW, Leesburg, VA, 20175. Phone: (703) 777-1244. Providers update this record themselves, so call before visiting.

How can I verify Claiborne Moore Callahan, M.D.'s license?

NPPES lists Virginia license number 0101250311, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Claiborne Moore Callahan, M.D. prescribe under Medicare Part D?

In 2024, Claiborne Moore Callahan, M.D. had 965 Medicare Part D claims for 276 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Claiborne Moore Callahan, M.D.'s MIPS final score?

The 2023 MIPS final score is 87.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.