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DR. TRESA REENA MASCARENHAS MBBS
NPI 1477846079
Internal Medicine - Infectious Disease in Newark, DE

Active since May 16, 2011PECOS EnrolledAccepts Medicare Assignment
537 STANTON CHRISTIANA RD STE 202, NEWARK, DE 19713(302) 994-9692(302) 994-9803 Get Directions Write a Review

NPPES record last updated: February 25, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Tresa Reena Mascarenhas Mbbs NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. TRESA REENA MASCARENHAS MBBS (NPI 1477846079) is an individual infectious disease provider in Newark, Delaware, licensed in Delaware (C10011090) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1477846079
Entity TypeIndividualFemale
Primary Taxonomy207RI0200X
Provider Legal NameDR. TRESA REENA MASCARENHASCredential: MBBS
Location Address537 STANTON CHRISTIANA RD STE 202Newark, DE 19713-2148
Mailing Address537 Stanton Christiana Rd Ste 202Newark, DE 19713-2148 · (302) 994-9692 · Fax (302) 994-9803
Phone(302) 994-9692
Fax(302) 994-9803
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateMay 16, 2011
Last NPPES UpdateFebruary 25, 2021
NPPES CertifiedFebruary 25, 2021
✔ NPI 1477846079 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in DE · C10011090
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
537 STANTON CHRISTIANA RD STE 202, Newark, DE 19713
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, Highmark Blue Cross Blue Shield Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Tresa Reena Mascarenhas Mbbs is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID143468736
PECOS Enrollment IDI20150122002574, I20180402001325
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
398 services143 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
328 services121 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
179 services166 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
91 services55 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
60 services56 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Union Hospital Of Cecil County

Acute Care Hospitals · Elkton, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210032
Location106 Bow StreetElkton, MD 21921 · Cecil County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19713 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.15 typical visit price
range $57.12 – $173.08
Typical copayment $32.78 (range $14.28 – $43.27)
Most-billed visit code 99204
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tresa Mascarenhas's NPI number?

The NPI number for Tresa Mascarenhas is 1477846079. It was assigned to this individual provider in the NPPES registry on May 16, 2011.

Where is Tresa Mascarenhas located?

Tresa Mascarenhas practices at 537 Stanton Christiana Rd Ste 202, Newark, DE 19713. The listed phone number is (302) 994-9692.

What is Tresa Mascarenhas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Tresa Mascarenhas enrolled in Medicare?

Yes. Tresa Mascarenhas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Tresa Mascarenhas accept?

Health plans from AmeriHealth Caritas Next and Highmark Blue Cross Blue Shield Delaware list Tresa Mascarenhas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Tresa Mascarenhas affiliated with any hospitals?

According to CMS data, Tresa Mascarenhas is affiliated with Union Hospital Of Cecil County.

When was this NPI record last updated?

The NPPES record for Tresa Mascarenhas was last updated on February 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.