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DR. STEPHANIE JOHANNA MASCIA M.D., M.P.H
NPI 1922413582
Internal Medicine in Cambridge, MA

Active since June 23, 2014PECOS EnrolledAccepts Medicare Assignment
625 MOUNT AUBURN ST STE 104, CAMBRIDGE, MA 02138(617) 491-5586(617) 661-5995 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 21, 2022, Mar 7, 2019 (2 updates tracked since 2019).

About Dr. Stephanie Johanna Mascia M.d., M.p.h NPPES

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

DR. STEPHANIE JOHANNA MASCIA M.D., M.P.H (NPI 1922413582) is an individual internal medicine provider in Cambridge, Massachusetts and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1922413582
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. STEPHANIE JOHANNA MASCIACredential: M.D., M.P.H
Location Address625 MOUNT AUBURN ST STE 104Cambridge, MA 02138-4518
Mailing Address625 Mount Auburn St Ste 104Cambridge, MA 02138-4518 · (617) 491-5586 · Fax (617) 349-3923
Phone(617) 491-5586
Fax(617) 661-5995
Sole ProprietorYes
Medical School CMSOtherGraduated 2014
Enumeration DateJune 23, 2014
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1922413582 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
625 MOUNT AUBURN ST STE 104, Cambridge, MA 02138
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Other Names 1

Former Name (1)Dr. Stephanie Johanna Antoine

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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. Stephanie Johanna Mascia M.d., M.p.h 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 ID5294014791
PECOS Enrollment IDI20180830001065
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 4

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.

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.
185 services138 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
34 services32 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
20 services20 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
19 services19 patients

Hospital Affiliations CMS Care Compare 5

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

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Faulkner Hospital-Brigham And Women's

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220119
Location1153 Centre StreetBoston, MA 02130 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02138 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers18 claims38 services$6.13 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

OLIVIA O'SHEA AGNP-C
Nurse Practitioner (Adult Health)
625 MOUNT AUBURN ST STE 104
CAMBRIDGE, MA 02138
Middlesex County (617) 491-5586
NAGMA KC FNP-C
Nurse Practitioner (Family)
625 MOUNT AUBURN ST STE 104
CAMBRIDGE, MA 02138
Middlesex County (617) 491-5586
HAMNA UMAR MD
Internal Medicine
625 MOUNT AUBURN ST STE 104
CAMBRIDGE, MA 02138
Middlesex County (617) 491-5586
DR. ROBERT C SCAFFIDI M.D.
Internal Medicine
625 MOUNT AUBURN ST STE 104
CAMBRIDGE, MA 02138
Middlesex County (617) 491-5586
NAIRA ALEKSANYAN FNP-BC
Nurse Practitioner (Family)
625 MOUNT AUBURN ST STE 104
CAMBRIDGE, MA 02138
Middlesex County (617) 491-5586

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 Stephanie Mascia's NPI number?

The NPI number for Stephanie Mascia is 1922413582. It was assigned to this individual provider in the NPPES registry on June 23, 2014. The provider is also known as Dr. Stephanie Johanna Antoine.

Where is Stephanie Mascia located?

Stephanie Mascia practices at 625 Mount Auburn St Ste 104, Cambridge, MA 02138. The listed phone number is (617) 491-5586.

What is Stephanie Mascia's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Stephanie Mascia enrolled in Medicare?

Yes. Stephanie Mascia 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 Stephanie Mascia accept?

Health plans from Anthem Blue Cross and Blue Shield list Stephanie Mascia 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 Stephanie Mascia affiliated with any hospitals?

According to CMS data, Stephanie Mascia is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Newton-Wellesley Hospital, Brigham And Women's Hospital and Faulkner Hospital-Brigham And Women's.

When was this NPI record last updated?

The NPPES record for Stephanie Mascia was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.