Dr. Hannah Machemehl, MD
What this data tells you about Dr. Machemehl
Dr. Hannah Machemehl is a neuromuscular medicine physician in Arden, NC, with 10 years of NPI registration. Based on federal Medicare data, Dr. Machemehl performed 808 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Machemehl received a total of $94,969 from 16 pharmaceutical and/or device companies across 147 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 Dr. Machemehl 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 |
|---|---|---|---|
| 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. |
201 | $137 | $593 |
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
123 | $25 | $110 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of the arm or leg using a needle electrode. It helps evaluate the health of muscles and the nerve cells that control them. |
108 | $78 | $215 |
| 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. |
73 | $127 | $557 |
| 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. |
46 | $87 | $373 |
| Limited needle EMG of arm or leg muscles A test that measures the electrical activity in specific muscles of the arm or leg using a needle electrode. This limited study evaluates muscle function in a targeted area. |
41 | $51 | $136 |
| Expiratory airflow and volume test A test that measures the amount of air you can exhale and the speed at which you can breathe it out. It evaluates lung function by assessing expiratory airflow and volume. |
39 | $22 | $98 |
| New patient office visit, complex (60-74 min) | 39 | $158 | $726 |
| Nerve conduction studies, 7-8 tests A series of 7 to 8 nerve conduction tests to evaluate how well nerves are sending signals to muscles. |
29 | $138 | $630 |
| 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. |
27 | $102 | $422 |
| Nerve conduction studies, 5-6 tests A series of 5 to 6 tests that measure how well nerves send electrical signals. The procedure evaluates nerve function and helps identify damage or dysfunction. |
24 | $109 | $478 |
| Nerve conduction study, 9-10 studies A diagnostic test that measures how well nerves send electrical signals. It involves performing 9 to 10 separate nerve conduction studies to evaluate nerve function. |
17 | $163 | $756 |
| Autonomic nervous system function test This test evaluates how well the sympathetic nervous system is functioning. It assesses the automatic control of bodily processes such as heart rate and blood pressure. |
14 | $101 | $438 |
| Autonomic nervous system testing with tilt This test evaluates the function of the sympathetic and parasympathetic nervous systems. It involves monitoring the patient for at least five minutes while they are tilted. |
14 | $123 | $505 |
| Nerve conduction studies, 11-12 A diagnostic test that measures how well nerves send electrical signals. It involves performing 11 to 12 separate nerve conduction studies. |
13 | $201 | $875 |
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
8.1 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
Dr. Machemehl is a clinical cardiology specialist, with above-average Medicare volume (top 14% in NC).
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Machemehl experienced with office visit, established patient, complex (40-54 min)?
Does Dr. Machemehl receive payments from pharmaceutical companies?
How do Dr. Machemehl's costs compare to other neuromuscular medicine physicians in Arden?
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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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