NPPES file of Aug 9, 2026

Kathryn Elizabeth O'Reilly, MD, PHD

MOHS-Micrographic Surgery Physician · Lewes, DE

Kathryn Elizabeth O'Reilly, MD, PHD is a mohs-micrographic surgery physician with a practice address in Lewes, Delaware, and NPI 1033370408, issued on Jun 18, 2008. Check the license (Delaware C1-0010044, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; 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
1033370408
Name
Kathryn Elizabeth O'Reilly
Credential
MD, PHD
Primary taxonomy
MOHS-Micrographic Surgery Physician 207ND0101X
License number
C1-0010044 DE
Self-reported in NPPES; status is on the state search
Practice location
750 Kings Hwy, Lewes, DE 19958
Phone
(302) 644-6400
Enumerated
Jun 18, 2008
Record last updated
Aug 12, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20120806000572); accepts Medicare assignment
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 750 Kings Hwy

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

  1. Michael Cahoon, DMDOral and Maxillofacial Surgery (Dentist)1043202039
  2. Erik Stancofski, MDSurgery Physician1104828094
  3. Ramakrishna Tatineni, MDSurgery Physician1457353252

Verify Kathryn Elizabeth O'Reilly in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
    Search for license C1-0010044
    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 Delaware license search

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16% fewer Medicare Part D claims than the average mohs-micrographic surgery physician in 2024

478 Medicare Part D claims for 211 beneficiaries, against an average of 570 among the 1,396 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.

  1. Kathryn O'Reilly478
  2. Specialty average570

Most prescribed

  1. Ketoconazole73 claims
  2. Clobetasol Propionate61 claims
  3. Triamcinolone Acetonide42 claims
  4. Hydrocortisone35 claims
  5. Metronidazole35 claims
  6. Fluorouracil33 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): 98 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 score95.0
  2. Costout of 100 · 30%98.4
  3. Promoting interoperabilityout of 100 · 25%100.0
  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: $117.38

2 payments; by number, the most common kind was education; the largest payer was Janssen Biotech, Inc. The 1,074 providers of this specialty with any payment received $4,075.23 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kathryn O'Reilly$117.38
  2. Specialty average$4,075.23

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. Cape Henlopen Dermatology PALewes, DE

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

MOHS-Micrographic Surgery Physician providers in Delaware

There are 6 mohs-micrographic surgery physician records in Delaware.

The 5 mohs-micrographic surgery physician records with the nearest ZIP codes

  1. Mitchell Stickler, M.D.Lewes, DE 199581275597114
  2. Stephanie Jackson CullisonWilmington, DE 198101457705956
  3. Christopher Conti, MDNewark, DE 197131801890397
  4. Aton Holzer, MDNewark, DE 197131083828180
  5. Alexander Valiga, MDNewark, DE 197131730640780

Common questions

What is Kathryn Elizabeth O'Reilly, MD, PHD's NPI number?

Kathryn Elizabeth O'Reilly, MD, PHD's National Provider Identifier (NPI) is 1033370408, issued on Jun 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn Elizabeth O'Reilly, MD, PHD located?

The NPPES record lists a practice address at 750 Kings Hwy, Lewes, DE, 19958. Phone: (302) 644-6400. Providers update this record themselves, so call before visiting.

How can I verify Kathryn Elizabeth O'Reilly, MD, PHD's license?

NPPES lists Delaware license number C1-0010044, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kathryn Elizabeth O'Reilly, MD, PHD prescribe under Medicare Part D?

In 2024, Kathryn Elizabeth O'Reilly, MD, PHD had 478 Medicare Part D claims for 211 beneficiaries; the average among mohs-micrographic surgery physician prescribers was 570. Part D covers Medicare prescriptions only.

What is Kathryn Elizabeth O'Reilly, MD, PHD's MIPS final score?

The 2023 MIPS final score is 98 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.