NPPES file of Aug 9, 2026

Catherine S. Hwang, MD

Radiation Oncology Physician · Orlando, FL

Catherine S. Hwang, MD is a radiation oncology physician with a practice address in Orlando, Florida, and NPI 1043496193, issued on Jan 18, 2008. Check the license (Florida ME121276, as entered in NPPES) on the Florida health license search; 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
1043496193
Name
Catherine S. Hwang
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
ME121276 FL
125045563 IL
51430 WI
Self-reported in NPPES; status is on the state search
Practice location
601 E Rollins St, Orlando, FL 32803
Phone
(407) 303-2030
Enumerated
Jan 18, 2008
Record last updated
Sep 28, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid ID
1043496193 WI
Medicare enrollment
Enrolled (PECOS I20141104001952); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2003
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 601 E Rollins St

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

  1. Abdel Kader Abdel Jaber, M.D.Pediatrics Physician1013229988
  2. Basima Abdul-Razak, MDPediatrics Physician1346279460
  3. Syed Abid, MDHospice and Palliative Medicine (Internal Medicine) Physician1578948261
  4. Alonso Abugattas, DOPediatrics Physician1023705084
  5. Miguel Acevedo Segui, MDEmergency Medical Services (Emergency Medicine) Physician1639166531
  6. Jeanne Ackerman, M.D.Anatomic Pathology & Clinical Pathology Physician1841272853

Verify Catherine S. Hwang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersFlorida health license search
    Search for license ME121276
    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
Open the Florida license search

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51% fewer Medicare Part D claims than the average radiation oncology physician in 2024

66 Medicare Part D claims for 50 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Catherine Hwang66
  2. Specialty average134

Most prescribed

  1. Triamcinolone Acetonide19 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): 78 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 score57.5
  2. Costout of 100 · 30%69.2
  3. Promoting interoperabilityout of 100 · 25%100.0
  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: $29.38

1 payment: food and beverage; the largest payer was TerSera Therapeutics LLC. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Catherine Hwang$29.38
  2. Specialty average$1,897.85

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

Bills Medicare through 2 group practices

  1. Florida Hospital Medical Group IncOrlando, FL
  2. Florida Hospital Medical Group IncAltamonte Spg, FL

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

Radiation Oncology Physician providers in Florida

There are 520 radiation oncology physician records in Florida.

Other radiation oncology physician records in Florida

  1. Andre Abitbol, M.D.Miami, FL1417944745
  2. Matthew Abramowitz, MDMiami, FL1295993699
  3. Scot Ackerman, MDJacksonville, FL1942205364
  4. James Adams, MDPensacola, FL1518981380
  5. Paul Adams, MDOxford, FL1770578619
  6. Anurag Agarwal, MDBoca Raton, FL1962482836
  7. Anesa Ahamad, M.D.Aventura, FL1710083506
  8. Kamran Ahmed, MDTampa, FL1659633915
  9. Clayton Alonso, MDTampa, FL1730508599
  10. Taghrid Altoos, MDClearwater, FL1124255005

Common questions

What is Catherine S. Hwang, MD's NPI number?

Catherine S. Hwang, MD's National Provider Identifier (NPI) is 1043496193, issued on Jan 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Catherine S. Hwang, MD located?

The NPPES record lists a practice address at 601 E Rollins St, Orlando, FL, 32803. Phone: (407) 303-2030. Providers update this record themselves, so call before visiting.

How can I verify Catherine S. Hwang, MD's license?

NPPES lists Florida license number ME121276, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Catherine S. Hwang, MD prescribe under Medicare Part D?

In 2024, Catherine S. Hwang, MD had 66 Medicare Part D claims for 50 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

What is Catherine S. Hwang, MD's MIPS final score?

The 2023 MIPS final score is 78 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.