Dr. Katherine Szema, M.D.
What this data tells you about Dr. Szema
Dr. Katherine Szema is an allergy physician in Shrewsbury, NJ, with 19 years of NPI registration. Based on federal Medicare data, Dr. Szema performed 12,888 Medicare services across 703 unique beneficiaries.
Between the years covered by Open Payments, Dr. Szema received a total of $10,394 from 42 pharmaceutical and/or device companies across 412 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in allergy physician. 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. Szema 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 |
|---|---|---|---|
| Allergy skin test A diagnostic test performed to identify specific allergies by applying or introducing allergenic extracts to the body. The procedure measures the patient's immune response to various potential allergens. |
10,295 | $4 | $15 |
| Skin allergy test A test where small amounts of potential allergens are injected into the skin to check for allergic reactions. |
1,482 | $7 | $18 |
| Allergy injection therapy, multiple injections A professional service involving the administration of multiple allergen injections. |
656 | $10 | $60 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
156 | $99 | $225 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
91 | $87 | $200 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
88 | $138 | $360 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
70 | $75 | $217 |
| Health risk assessment administration and interpretation This procedure involves administering a health risk assessment to a patient and interpreting the results. |
21 | $2 | $9 |
| Allergy test using ingested items, initial 2 hours This procedure involves testing for allergies by having the patient ingest specific items over an initial two-hour period. |
18 | $97 | $310 |
| Nitric oxide gas level test A test that measures the level of nitric oxide gas in the body. |
11 | $17 | $50 |
Industry Payment Transparency
Open Payments through 2024 ↗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 (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (75%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
2.6 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 2024 |
| 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. Szema is a mixed practice specialist, with above-average Medicare volume (top 8% in NJ), with low-engagement industry engagement, with 19 years of NPI registration.
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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