Holly McPherson, M. D.
What this data tells you about McPherson
Holly McPherson is an allergy & immunology specialist in Winston Salem, NC, with 20 years of NPI registration. Based on federal Medicare data, McPherson performed 9,550 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, McPherson received a total of $147,476 from 43 pharmaceutical and/or device companies across 969 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 McPherson 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 |
|---|---|---|---|
| Omalizumab injection (Xolair) for asthma/allergy | 4,270 | $30 | $68 |
| 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. |
2,097 | $3 | $14 |
| Allergy immunotherapy preparation A professional service involving the preparation and administration of one or more antigens. |
1,145 | $10 | $29 |
| Allergy injection therapy, multiple injections A professional service involving the administration of multiple allergen injections. |
703 | $8 | $39 |
| Allergen injection administration Professional service for the administration of a single allergen injection. |
467 | $6 | $30 |
| 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. |
306 | $10 | $54 |
| Skin allergy test A test where small amounts of potential allergens are injected into the skin to check for allergic reactions. |
220 | $6 | $17 |
| Health risk assessment administration and interpretation This procedure involves administering a health risk assessment to a patient and interpreting the results. |
116 | $2 | $16 |
| 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. |
96 | $60 | $146 |
| 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. |
50 | $77 | $207 |
| 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. |
23 | $19 | $87 |
| Nitric oxide gas level test A test that measures the level of nitric oxide gas in the body. |
22 | $14 | $38 |
| 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. |
19 | $92 | $307 |
| 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. |
16 | $83 | $237 |
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 (2018-2024) ›
Associated products mentioned in payments ›
Geographic Context
0.0 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
McPherson is a mixed practice specialist, with above-average Medicare volume (top 20% in NC), with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is McPherson experienced with omalizumab injection (xolair) for asthma/allergy?
Does McPherson receive payments from pharmaceutical companies?
How do McPherson's costs compare to other allergy & immunologists in Winston Salem?
What does Data Coverage mean?
Is this data up to date?
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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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