NPPES file of Aug 9, 2026

Melissa McCool Senn

Physician Assistant · Columbia, SC

Melissa McCool Senn is a physician assistant with a practice address in Columbia, South Carolina, and NPI 1033735204, issued on Jun 23, 2020. Check the license (South Carolina PA3575, as entered in NPPES) with the South Carolina board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033735204
Name
Melissa McCool Senn
Primary taxonomy
Physician Assistant 363A00000X
License number
PA3575 SC
Self-reported in NPPES; status is on the state search
Practice location
1706 Saint Julian PL, Columbia, SC 29204
Phone
(803) 771-7506
Enumerated
Jun 23, 2020
Record last updated
Nov 7, 2023
Medicare enrollment
Enrolled (PECOS I20200902002743); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1706 Saint Julian PL

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mark Blaskis, MDDermatology Physician1841259124
  2. Annette Lynn, M.D.Dermatology Physician1194792010
  3. Lori Mauldin, PA-CDermatology Physician1649221854
  4. Kaitlyn Powell, M.D.Dermatology Physician1356753461
  5. Long Quan, M.D., PH.D.Dermatology Physician1194784058
  6. Lauren Vargo, PA-CDermatology Physician1689625808

Verify Melissa McCool Senn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
    Search for license PA3575
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the South Carolina license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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66% fewer Medicare Part D claims than the average physician assistant in 2024

280 Medicare Part D claims for 113 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Melissa Senn280
  2. Specialty average830

Most prescribed

  1. Clobetasol Propionate42 claims
  2. Triamcinolone Acetonide42 claims
  3. Ketoconazole36 claims
  4. Doxycycline Hyclate17 claims
  5. Dupixent Pen17 claims
  6. Tacrolimus14 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 83 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.5
  2. Costout of 100 · 30%72.2
  3. Promoting interoperabilityout of 100 · 25%89.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $2,632.14

135 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Melissa Senn$2,632.14
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Carolina Dermatology GrpColumbia, SC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Melissa McCool Senn among 2,294 physician assistant records in South Carolina

Melissa McCool Senn is one of 2,294 physician assistant records with a practice address in South Carolina. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 57% of them.

  • NPI issued2020 · 57% of these records are older, 38% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2020 · median 2019 among the 1,516 with a school on file
  • Record last updated2023 · 31% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

247 physician assistant records list a practice address in Columbia

They are 247 of the 11,200 NPPES records with a practice address in Columbia, and 2,294 physician assistant records in South Carolina.

The 8 physician assistant records with the nearest ZIP codes

  1. Chelsea Baker, PAColumbia, SC 292041073982195
  2. Matthew Beauregard, PA-CColumbia, SC 292041881265460
  3. Troy Blanks, PAColumbia, SC 292041457389363
  4. Mark Davis, PA-CColumbia, SC 292041073586186
  5. Ashley Dyson, PA-CColumbia, SC 292041346498185
  6. Mariana Jeong, PA-CColumbia, SC 292041295481356
  7. Kathleen Keiner, PAColumbia, SC 292041285239426
  8. April McNeill, PHYSICIAN'S ASSISTANColumbia, SC 292041952375347

Common questions

What is Melissa McCool Senn's NPI number?

Melissa McCool Senn's National Provider Identifier (NPI) is 1033735204, issued on Jun 23, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Melissa McCool Senn located?

The NPPES record lists a practice address at 1706 Saint Julian PL, Columbia, SC, 29204. Phone: (803) 771-7506. Providers update this record themselves, so call before visiting.

How can I verify Melissa McCool Senn's license?

NPPES lists South Carolina license number PA3575, as entered by the provider. Search the South Carolina board that licenses this profession; the NPPES record confirms identity only.

How much does Melissa McCool Senn prescribe under Medicare Part D?

In 2024, Melissa McCool Senn had 280 Medicare Part D claims for 113 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

What is Melissa McCool Senn's MIPS final score?

The 2023 MIPS final score is 83 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.