Mary Gerstein, NP
What this data tells you about Gerstein
Mary Gerstein is a physician assistant in Gastonia, NC, with 19 years of NPI registration. Based on federal Medicare data, Gerstein performed 7,668 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Gerstein received a total of $1,610 from 15 pharmaceutical and/or device companies across 32 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Gerstein 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 — 2023
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 |
|---|---|---|---|
| BCG treatment for bladder cancer | 2,950 | $2 | $7 |
| Denosumab injection (Prolia/Xgeva) | 1,620 | $17 | $34 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
870 | $3 | $7 |
| 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. |
579 | $71 | $244 |
| Bladder ultrasound after voiding An ultrasound scan performed after urination to measure the amount of urine remaining in the bladder. |
464 | $7 | $46 |
| 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. |
292 | $55 | $188 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
273 | $8 | $8 |
| Simple change of bladder tube | 105 | $56 | $278 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
81 | $105 | $350 |
| Bladder irrigation and/or instillation This procedure involves flushing the bladder with fluid to clear it or introducing medication directly into the bladder. |
55 | $47 | $214 |
| Hormone pellet insertion under the skin A small hormone pellet is placed just beneath the skin to release medication slowly over time. |
53 | $59 | $244 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
53 | $523 | $721 |
| Simple insertion of temporary bladder tube A procedure to place a temporary tube into the bladder. This allows for the drainage of urine from the bladder. |
46 | $37 | $188 |
| Abdominal X-ray, 1 view An X-ray image of the abdomen taken from a single angle to visualize internal structures. |
35 | $18 | $69 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
33 | $2 | $6 |
| Subcutaneous or intramuscular chemotherapy injection This procedure involves administering anti-cancer hormonal medication through an injection into the tissue under the skin or into a muscle. |
31 | $20 | $70 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
30 | $15 | $47 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
27 | $8 | $42 |
| Limited abdominal ultrasound A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures. |
26 | $54 | $250 |
| Bladder instillation of anti-cancer drug A procedure where an anti-cancer medication is introduced directly into the bladder. This method delivers the treatment locally to the bladder tissue. |
23 | $49 | $286 |
| CT scan of abdomen and pelvis, without contrast A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye. |
22 | $73 | $900 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2021-2024) ›
Associated products mentioned in payments ›
Geographic Context
5.1 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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
Gerstein is a mixed practice specialist, with above-average Medicare volume (top 1% in NC), 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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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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