Tresa Reena Mascarenhas, MBBS
- Medicare services, 2024
- 1,070
- Medicare patients, 2024
- 324
- Part D claims, 2024
- 603
- Publications
- 1
- Hospital affiliations
- 4
- Practice address
- 501 W 14th St, Wilmington, DE 19801
- Practice phone
- Call (302) 733-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ChristianaCare Wilmington Hospital
Wilmington, Delaware
Find Tresa Mascarenhas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Tresa Reena Mascarenhas is an infectious disease specialist in Wilmington, Delaware
Tresa Mascarenhas practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware.
Tresa Mascarenhas' NPI, 1477846079, was assigned on May 16, 2011. Tresa Mascarenhas holds Delaware license C10011090.
- NPI
- 1477846079NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143468736
- NPI enumeration date
- May 16, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (302) 733-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Tresa Reena Mascarenhas practices at ChristianaCare Wilmington Hospital in Wilmington, Delaware
Tresa Mascarenhas' primary practice is ChristianaCare Wilmington Hospital, at 501 W 14th St, Wilmington, DE 19801 in New Castle County. The practice phone is (302) 733-1000.
- ChristianaCare Wilmington Hospital501 W 14th St, Wilmington, DE 19801 · New Castle CountyPhone(302) 733-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Tresa Reena Mascarenhas is affiliated with 6 sites of care and 1 medical group
Tresa Mascarenhas' primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Tresa Mascarenhas is also affiliated with Saint Francis Hospital. The medical group on file is Infectious Disease Consultants. Dmand AI also links Tresa Mascarenhas to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Tresa Reena Mascarenhas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Tresa Mascarenhas practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ChristianaCare Wilmington Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Tresa Reena Mascarenhas is one of 28 infectious disease specialists in Delaware
Infectious disease is Tresa Mascarenhas' primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Tresa Mascarenhas is licensed in Delaware.
Specialties and state licenses
- Infectious disease, DelawarePrimary
Infectious disease specialists near Tresa Mascarenhas
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Tresa Reena Mascarenhas billed Medicare for 1,070 services in 2024
CMS data shows 1,070 Medicare services from Tresa Mascarenhas across 6 procedure codes in 2024, for 324 Medicare patients. Medicare paid $96,353 for them.
Tresa Mascarenhas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3862024: 1,07023%
Where Tresa Mascarenhas' Medicare services took place, 2024
- In an office10510%
- In a facility96590%
Tresa Mascarenhas compared with the Delaware median for infectious disease specialists, 2024
- Tresa Mascarenhas
- Delaware median
- Medicare services
- 1,070vs 70153% above
- Medicare patients
- 324vs 28613% above
- Part D claims
- 455vs 40113% above
Medians across 26 infectious disease specialists in Delaware with Dmand AI profiles that report each measure.
Tresa Mascarenhas' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Tresa Mascarenhas?
Medicare shows one payer. Book a meeting to get commercial claims data for Tresa Mascarenhas and other infectious disease specialists in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Tresa Reena Mascarenhas treated 324 Medicare patients in 2024, average age 74
CMS counts 324 Medicare patients who saw Tresa Mascarenhas in 2024. The largest group is 65 to 74, with 128 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 3.17, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Tresa Mascarenhas' median patient age at 69, with 47% women.
Tresa Mascarenhas' Medicare patients by age, 2024
Tresa Mascarenhas' Medicare patients by sex, 2024
- Women17855%
- Men14645%
Chronic conditions among Tresa Mascarenhas' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes51%
- Mood disorders51%
- Chronic kidney disease50%
- Ischemic heart disease50%
- Anxiety47%
Share of Medicare patients with each condition. A patient can have several.
Tresa Mascarenhas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women47%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Tresa Reena Mascarenhas wrote 603 Medicare Part D claims in 2024
In 2024, Tresa Mascarenhas wrote 603 Medicare Part D claims for 96 patients. 67% of them were for generic drugs. CMS names the drug for 455 of them, across 21 drugs with 11 or more claims each, at $715,877 in total drug cost. In 2023, CMS named 410 claims across 23 drugs.
Tresa Mascarenhas' Part D claims by kind of drug, 2024
- Generic406 claims67%
- Brand-name197 claims33%
Tresa Mascarenhas' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Tresa Mascarenhas' Part D claims, 2024
- Antibiotics50%304 of 603 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4102024: 45511%
Drugs named by CMS: 21 in 2024, 23 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Tresa Reena Mascarenhas offers telehealth to Medicare patients
Tresa Mascarenhas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Tresa Mascarenhas as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Tresa Reena Mascarenhas has 1 publication on record
Dmand AI links 1 paper to Tresa Mascarenhas in 2018. Tresa Mascarenhas' most frequent co-authors are Katherine A. Belden, MD and Randi S. Silibovsky, MD.
Tresa Mascarenhas' most frequent co-authors
Recent publications by Tresa Mascarenhas
See who Tresa Mascarenhas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Tresa Mascarenhas works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Tresa Reena Mascarenhas received $813 in industry payments from 2016 to 2025
CMS Open Payments shows 27 general payments to Tresa Mascarenhas from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 77% of the total. Merck Sharp & Dohme Corporation paid the most, $159.
General payments to Tresa Mascarenhas by program year, 2016 to 2025
General payments to Tresa Mascarenhas by kind, 2016 to 2025
- Food and beverage$62277%
- Education$19023%
Companies that paid Tresa Mascarenhas the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Tresa Reena Mascarenhas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Tresa Reena Mascarenhas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Tresa Reena Mascarenhas' NPI number?
Tresa Reena Mascarenhas' NPI number is 1477846079. It was assigned on May 16, 2011, and it is active in the NPI Registry.
What does Tresa Reena Mascarenhas specialize in?
Tresa Reena Mascarenhas is an infectious disease specialist in Wilmington, Delaware. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Tresa Reena Mascarenhas practice?
Tresa Mascarenhas practices at 501 W 14th St, Wilmington, DE 19801. Tresa Mascarenhas' primary practice is ChristianaCare Wilmington Hospital in Wilmington, Delaware. Dmand AI also links Tresa Mascarenhas to 3 hospitals and 1 group practice or clinic.
What is Tresa Reena Mascarenhas' office phone number?
The practice phone on file for Tresa Mascarenhas is (302) 733-1000.
What is Tresa Reena Mascarenhas' medical license number?
Tresa Mascarenhas holds Delaware license C10011090.
Which hospitals is Tresa Reena Mascarenhas affiliated with?
Tresa Mascarenhas is affiliated with Saint Francis Hospital. Dmand AI links Tresa Mascarenhas to 3 more hospitals.
What medical group is Tresa Reena Mascarenhas part of?
Tresa Mascarenhas is linked to Infectious Disease Consultants.
Does Tresa Reena Mascarenhas accept Medicare?
Yes. CMS data shows Tresa Mascarenhas billed Medicare for 1,070 services in 2024, and Tresa Mascarenhas accepts Medicare assignment.
Does Tresa Reena Mascarenhas offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Tresa Mascarenhas as offering telehealth services.
How many Medicare patients does Tresa Reena Mascarenhas see?
CMS counts 324 Medicare patients who saw Tresa Mascarenhas in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Tresa Reena Mascarenhas bill to Medicare?
In 2024, Tresa Mascarenhas' most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99223).
What drugs does Tresa Reena Mascarenhas prescribe most?
In 2024 Medicare Part D data, Tresa Mascarenhas' most prescribed drugs by claims were Biktarvy, Genvoya and Cefadroxil.
Has Tresa Reena Mascarenhas received payments from drug or device companies?
CMS Open Payments shows $813 in general payments to Tresa Mascarenhas from 10 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Tresa Reena Mascarenhas been practicing?
Tresa Mascarenhas graduated from medical school in 2008, 18 years ago.
Does Tresa Reena Mascarenhas do research?
Dmand AI links 1 publication to Tresa Mascarenhas.
Who does Tresa Reena Mascarenhas publish with?
Tresa Mascarenhas' most frequent co-authors are Katherine A. Belden, MD (1 shared paper) and Randi S. Silibovsky, MD (1 shared paper).
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