Total Payments
$1,597
2024 Payments
$326.60
Companies
10
Transactions
70
Medicare Patients
107
Medicare Billing
$21,044
Payment Breakdown by Category
Food & Beverage$1,597 (100.0%)
Payments by Nature
| Nature of Payment | Amount | Transactions | Share |
|---|---|---|---|
| Food and Beverage | $1,597 | 70 | 100.0% |
Top Paying Companies
| Company | Total | Records | Latest Year |
|---|---|---|---|
| Optinose US, Inc. | $529.75 | 23 | $0 (2024) |
| GlaxoSmithKline, LLC. | $401.98 | 18 | $0 (2024) |
| Regeneron Healthcare Solutions, Inc. | $219.09 | 10 | $0 (2023) |
| GENZYME CORPORATION | $159.79 | 7 | $0 (2023) |
| ALK-Abello, Inc | $93.99 | 5 | $0 (2023) |
| Stryker Corporation | $89.97 | 2 | $0 (2021) |
| Phadia US Inc. | $33.04 | 2 | $0 (2023) |
| USWM, LLC | $26.00 | 1 | $0 (2021) |
| Merck Sharp & Dohme LLC | $23.36 | 1 | $0 (2023) |
| WATERMARK MEDICAL, INC. | $20.43 | 1 | $0 (2024) |
Payment History by Year
| Year | Amount | Transactions | Top Company |
|---|---|---|---|
| 2024 | $326.60 | 9 | Optinose US, Inc. ($178.57) |
| 2023 | $427.94 | 20 | Regeneron Healthcare Solutions, Inc. ($131.51) |
| 2022 | $436.61 | 23 | OptiNose US, Inc. ($149.56) |
| 2021 | $406.25 | 18 | Optinose US, Inc. ($129.45) |
All Payment Transactions
70 individual payment records from CMS Open Payments — Page 1 of 3
| Date | Company | Product | Nature | Form | Amount | Type |
|---|---|---|---|---|---|---|
| 12/16/2024 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $7.00 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 11/26/2024 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $27.90 | General |
| Category: IMMUNOLOGY | ||||||
| 10/14/2024 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $32.23 | General |
| Category: IMMUNOLOGY | ||||||
| 09/28/2024 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $137.61 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 06/18/2024 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $32.72 | General |
| Category: IMMUNOLOGY | ||||||
| 05/23/2024 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $5.45 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 03/01/2024 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $34.75 | General |
| Category: IMMUNOLOGY | ||||||
| 02/16/2024 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $28.51 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 01/18/2024 | WATERMARK MEDICAL, INC. | ARES 620 UNICORDER (Device) | Food and Beverage | In-kind items and services | $20.43 | General |
| Category: VENTILATORY EFFORT RECORDER | ||||||
| 11/29/2023 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $33.47 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 10/26/2023 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $23.78 | General |
| Category: IMMUNOLOGY | ||||||
| 10/25/2023 | ALK-Abello, Inc | TIMOTHY, STANDARDIZED (Biological), STANDARDIZED MITE D. FARINAE, ALTERNARIA TENUIS | Food and Beverage | In-kind items and services | $19.99 | General |
| 10/18/2023 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $22.71 | General |
| Category: IMMUNOLOGY | ||||||
| 10/10/2023 | Merck Sharp & Dohme LLC | — | Food and Beverage | In-kind items and services | $23.36 | General |
| 09/05/2023 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $22.18 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
| 07/14/2023 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $17.81 | General |
| Category: IMMUNOLOGY | ||||||
| 06/14/2023 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $22.23 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
| 04/27/2023 | ALK-Abello, Inc | Odactra (Drug), Grastek, Ragwitek | Food and Beverage | In-kind items and services | $21.27 | General |
| Category: Allergy and Immunology | ||||||
| 04/18/2023 | Optinose US, Inc. | Xhance (Drug) | Food and Beverage | In-kind items and services | $18.31 | General |
| Category: Otolaryngology (Ear, Nose, Throat) | ||||||
| 04/13/2023 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $23.36 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
| 03/24/2023 | Phadia US Inc. | ImmunoCAP (Device) | Food and Beverage | Cash or cash equivalent | $17.33 | General |
| Category: Allergy/Immunology | ||||||
| 03/22/2023 | GENZYME CORPORATION | DUPIXENT (Biological), DUPIXENT | Food and Beverage | In-kind items and services | $21.74 | General |
| Category: Immunology | ||||||
| 02/28/2023 | GlaxoSmithKline, LLC. | NUCALA (Biological) | Food and Beverage | In-kind items and services | $19.22 | General |
| Category: IMMUNOLOGY | ||||||
| 02/24/2023 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $20.27 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
| 02/01/2023 | Regeneron Healthcare Solutions, Inc. | DUPIXENT (Biological) | Food and Beverage | In-kind items and services | $22.29 | General |
| Category: INFLAMMATION AND IMMUNOLOGY | ||||||
Medicare Billing by Year
| Year | Procedures | Beneficiaries | Services | Submitted | Medicare Paid |
|---|---|---|---|---|---|
| 2023 | 2 | 34 | 37 | $23,084 | $3,548 |
| 2022 | 2 | 38 | 40 | $24,217 | $3,999 |
| 2021 | 1 | 22 | 22 | $145,488 | $8,457 |
| 2020 | 1 | 13 | 13 | $85,970 | $5,039 |
Total Patients
107
Total Services
112
Medicare Billing
$21,044
Procedure Codes
6
All Medicare Procedures & Services
6 procedure records from CMS Medicare Utilization
| HCPCS | Description | Setting | Year | Patients | Services | Charges | Medicare Paid | Ratio |
|---|---|---|---|---|---|---|---|---|
| 31231 | Diagnostic exam of nasal passages using an endoscope | Office | 2023 | 16 | 18 | $15,909 | $2,544 | 16.0% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2023 | 18 | 19 | $7,175 | $1,004 | 14.0% |
| 31231 | Diagnostic exam of nasal passages using an endoscope | Office | 2022 | 17 | 18 | $15,909 | $2,714 | 17.1% |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | Office | 2022 | 21 | 22 | $8,308 | $1,286 | 15.5% |
| 31295 | Dilation of maxillary sinus in the nose using an endoscope | Office | 2021 | 22 | 22 | $145,488 | $8,457 | 5.8% |
| 31295 | Dilation of opening from sinus above teeth (maxillary sinus) into cavity of nose using endoscope | Office | 2020 | 13 | 13 | $85,970 | $5,039 | 5.9% |
About Melissa Walker, PA-C
Melissa Walker, PA-C is a Physician Assistant healthcare provider based in Ashburn, Virginia. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 01/26/2016. The National Provider Identifier (NPI) number assigned to this provider is 1578920211.
According to the Centers for Medicare & Medicaid Services (CMS) Open Payments database, Melissa Walker, PA-C has received a total of $1,597 in payments from pharmaceutical and medical device companies, with $326.60 received in 2024. These payments were reported across 70 transactions from 10 companies. The most common payment nature is "Food and Beverage" ($1,597).
As a Medicare-enrolled provider, Walker has provided services to 107 Medicare beneficiaries, totaling 112 services with total Medicare billing of $21,044. Data is available for 4 years (2020–2023), covering 6 distinct procedure/service records.
Ad
Practice Information
- Specialty Physician Assistant
- Location Ashburn, VA
- Active Since 01/26/2016
- Last Updated 01/26/2016
- Taxonomy Code 363A00000X
- Entity Type Individual
- NPI Number 1578920211
Products in Payments
- Xhance (Drug) $529.75
- NUCALA (Biological) $401.98
- DUPIXENT (Biological) $378.88
- FOCESS HD WIRELESS CAMERA (Device) $74.40
- Odactra (Drug) $39.10
- TIMOTHY, STANDARDIZED (Biological) $38.16
- ImmunoCAP (Device) $33.04
- SYMJEPI (Drug) $26.00
- ARES 620 UNICORDER (Device) $20.43
- PRE-PEN (Drug) $16.73
- SCOPIS ENT (Device) $15.57
Explore
Data Sources
Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.
Physician Assistant Doctors in Ashburn
Ms. Julie Johnson, Pa-C, PA-C
Physician Assistant — Payments: $14,845
Physician Assistant $14,845
Taylor Rehfuss, Pa-C, PA-C
Physician Assistant — Payments: $12,531
Physician Assistant $12,531
Mrs. Garry Jelen, P.a.-C, P.A.-C
Physician Assistant — Payments: $4,450
Physician Assistant $4,450
Annie Pratt, Pa-C, PA-C
Physician Assistant — Payments: $4,170
Physician Assistant $4,170
Meredith West, Pa-C, PA-C
Physician Assistant — Payments: $1,233
Physician Assistant $1,233
Jessica Myslikowski
Physician Assistant — Payments: $826.16
Physician Assistant $826.16