Tresa Reena Mascarenhas, MBBS
Infectious Disease Physician · Newark, DE
Tresa Reena Mascarenhas, MBBS is an infectious disease physician with a practice address in Newark, Delaware, and NPI 1477846079, issued on May 16, 2011. Check the license (Delaware C10011090, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Tresa Reena Mascarenhas
- Credential
- MBBS
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- C10011090 DE
Self-reported in NPPES; status is on the state search - Practice location
- 537 Stanton Christiana RD Ste 202, Newark, DE 19713
- Phone
- (302) 994-9692
- Enumerated
- May 16, 2011
- Record last updated
- Feb 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (302) 994-9803
- Medicare enrollment
- Enrolled (PECOS I20180402001325); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 32 in Delaware → Look up another NPI →
Verify Tresa Reena Mascarenhas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C10011090Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average infectious disease physician in 2024
603 Medicare Part D claims for 96 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Biktarvy49 claims
- Genvoya43 claims
- Cefadroxil40 claims
- Sulfamethoxazole-Trimethoprim37 claims
- Ceftriaxone32 claims
- Triumeq27 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.
Industry payments in 2024: $232.41
9 payments; by number, the most common kind was food and beverage; the largest payer was Insmed, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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
- Infectious Disease Consultants PAElkton, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tresa Reena Mascarenhas among 32 infectious disease physician records in Delaware
Tresa Reena Mascarenhas, MBBS is one of 32 infectious disease physician records with a practice address in Delaware. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 28% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated2008 · median 2002 among the 28 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Delaware
There are 32 infectious disease physician records in Delaware.
All 32 in Delaware → Every provider in Newark → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Alfred Bacon, MDNewark, DE 197131902967508
- David Cohen, M.D.Newark, DE 197131306907902
- Chad Duffalo, M.D.Newark, DE 197131639339484
- Wesley Emmons, M.D.Newark, DE 197131770692782
- Maya Gupta, M.D.Newark, DE 197131811011646
- Stephanie Lee, MDNewark, DE 197131912068529
- James Ley, M.D.Newark, DE 197131376652396
- Angela Oates, M.D,Newark, DE 197131447437868
Common questions
What is Tresa Reena Mascarenhas, MBBS's NPI number?
Tresa Reena Mascarenhas, MBBS's National Provider Identifier (NPI) is 1477846079, issued on May 16, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Tresa Reena Mascarenhas, MBBS located?
The NPPES record lists a practice address at 537 Stanton Christiana RD Ste 202, Newark, DE, 19713. Phone: (302) 994-9692. Providers update this record themselves, so call before visiting.
How can I verify Tresa Reena Mascarenhas, MBBS's license?
NPPES lists Delaware license number C10011090, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tresa Reena Mascarenhas, MBBS prescribe under Medicare Part D?
In 2024, Tresa Reena Mascarenhas, MBBS had 603 Medicare Part D claims for 96 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
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.