Dr. Elizabeth Callahan, NURSE PRACTITIONER
What this data tells you about Dr. Callahan
Dr. Elizabeth Callahan is a physician assistant in Princeton, NJ, with 4 years of NPI registration. Based on federal Medicare data, Dr. Callahan performed 1,905 Medicare services across 1,232 unique beneficiaries.
Between the years covered by Open Payments, Dr. Callahan received a total of $50 from 1 pharmaceutical and/or device company across 3 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in physician assistant. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Callahan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
510 | $52 | $191 |
| Fluorescence wound imaging for bacteria, first anatomic site This procedure uses fluorescence imaging technology to detect bacteria within a wound at the first anatomical site examined. |
311 | $123 | $468 |
| Therapy procedure using ultrasound A therapeutic treatment that utilizes ultrasound technology. The specific clinical purpose or condition treated is not defined in the provided description. |
267 | $355 | $1,400 |
| Skin and tissue removal, 20 sq cm or less This procedure involves the surgical excision of skin and underlying tissue from an area measuring 20 square centimeters or smaller. |
177 | $93 | $385 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
119 | $76 | $251 |
| Fluorescence wound imaging for bacteria, each additional site This procedure uses fluorescence imaging to detect bacteria in a wound. It is billed for each additional anatomical site examined beyond the first. |
91 | $83 | $310 |
| Home visit, established patient, low complexity A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes. |
88 | $56 | $230 |
| Nursing facility visit, established patient, straightforward A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves straightforward medical decision making and lasts at least 10 minutes. |
79 | $27 | $121 |
| Additional tissue removal, per 20 sq cm This code covers the removal of extra muscle or tissue in increments of 20 square centimeters or less. It is used to bill for additional areas treated beyond the initial procedure. |
67 | $40 | $210 |
| Muscle or tissue removal, 20 sq cm or less This procedure involves the surgical removal of muscle or other tissue from the body. The total area of the removed tissue is 20.0 square centimeters or less. |
52 | $173 | $678 |
| Additional skin and tissue removal, per 20 sq cm This code covers the removal of skin and tissue for each additional 20 square centimeters or less beyond the initial procedure. |
48 | $18 | $120 |
| Initial nursing facility care, moderate complexity Initial care provided to a patient in a nursing facility with moderate medical decision making, taking at least 35 minutes. |
23 | $87 | $355 |
| Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 21 | $56 | $250 |
| Chemical application to prevent wound tissue regrowth A chemical agent is applied to a wound to inhibit the regrowth of tissue. This procedure focuses on the application of the substance to manage the wound bed. |
19 | $65 | $270 |
| Nursing facility visit, high complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves a high level of medical decision making and takes at least 45 minutes. |
19 | $113 | $371 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
14 | $134 | $455 |
Industry Payment Transparency
Open Payments through 2023 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2023)
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
4.3 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2023 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Callahan is a mixed practice specialist, with above-average Medicare volume (top 6% in NJ), with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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