Marissa J. Defreitas, M.D.
Pediatric Nephrology Physician · Miami, FL
Marissa J. Defreitas, M.D. is a pediatric nephrology physician with a practice address in Miami, Florida, and NPI 1861635674, issued on Apr 8, 2009. Check the license (Florida ME123124, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Marissa J. Defreitas
- Credential
- M.D.
- Primary taxonomy
- Pediatric Nephrology Physician 2080P0210X
- License number
- ME123124 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1611 NW 12TH Ave, Miami, FL 33136
- Phone
- (305) 585-6726
- Enumerated
- Apr 8, 2009
- Record last updated
- Feb 8, 2023
- Medicare enrollment
- Enrolled (PECOS I20150915001282); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest pediatric nephrology physician records → All 61 in Florida → Look up another NPI →
Also registered at 1611 NW 12TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Morgan AaronStudent in an Organized Health Care Education/Training Program1003676636
- Tonya Aaron, MDPHDStudent in an Organized Health Care Education/Training Program1407640071
- Joel AbadStudent in an Organized Health Care Education/Training Program1609570688
- Miguel Abalo, MDAnesthesiology Physician1700248457
- Nadia AbbassStudent in an Organized Health Care Education/Training Program1366249815
- Ahmed Abdelkader, MD, MSC.Student in an Organized Health Care Education/Training Program1225973712
Verify Marissa J. Defreitas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME123124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average pediatric nephrology physician in 2024
39 Medicare Part D claims for 12 beneficiaries, against an average of 67 among the 387 providers of this specialty who prescribed in Part D.
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): 81.3 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $65.73
1 payment: food and beverage; the largest payer was Calliditas Therapeutics US Inc. The 297 providers of this specialty with any payment received $3,704.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- University OF MiamiMiami, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa J. Defreitas among 61 pediatric nephrology physician records in Florida
Marissa J. Defreitas, M.D. is one of 61 pediatric nephrology physician records with a practice address in Florida. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 62% of them.
- NPI issued2009 · 62% of these records are older, 34% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2009 · median 2001 among the 45 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0210X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Nephrology Physician providers in Florida
There are 61 pediatric nephrology physician records in Florida.
All 61 in Florida → Every provider in Miami → Pediatric Nephrology Physician nationwide →
The 8 pediatric nephrology physician records with the nearest ZIP codes
- Tara Gavcovich, MDMiami, FL 331361568966521
- Wendy Glaberson, M.D.Miami, FL 331361891038121
- Chryso Katsoufis, M.D.Miami, FL 331361154523348
- Wacharee Seeherunvong, MDMiami, FL 331361770664054
- Vaka Sigurjonsdottir, M.D.Miami, FL 331361538501937
- Anselmo Cepero-Akselrad, M.D.South Miami, FL 331431063421352
- Fanny Gonzalez, M.D.South Miami, FL 331431265642581
- Ana Paredes, M.D.South Miami, FL 331431922055615
Common questions
What is Marissa J. Defreitas, M.D.'s NPI number?
Marissa J. Defreitas, M.D.'s National Provider Identifier (NPI) is 1861635674, issued on Apr 8, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Marissa J. Defreitas, M.D. located?
The NPPES record lists a practice address at 1611 NW 12TH Ave, Miami, FL, 33136. Phone: (305) 585-6726. Providers update this record themselves, so call before visiting.
How can I verify Marissa J. Defreitas, M.D.'s license?
NPPES lists Florida license number ME123124, 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 Marissa J. Defreitas, M.D. prescribe under Medicare Part D?
In 2024, Marissa J. Defreitas, M.D. had 39 Medicare Part D claims for 12 beneficiaries; the average among pediatric nephrology physician prescribers was 67. Part D covers Medicare prescriptions only.
What is Marissa J. Defreitas, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.3 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.