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MARY WING SUM TAM MD
NPI 1053802454
Ophthalmology in Danbury, CT

Active since May 22, 2018PECOS Enrolled
93.58/100
CMS Quality Rating
57 NORTH ST STE 415, DANBURY, CT 06810(203) 628-4995 Get Directions Write a Review

NPPES record last updated: July 23, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 9, 2025, Feb 6, 2025, Jun 19, 2024 and 5 more (8 updates tracked since 2018).

About Mary Wing Sum Tam Md NPPES

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

MARY WING SUM TAM MD (NPI 1053802454) is an individual ophthalmology provider in Danbury, Connecticut, licensed in Connecticut (80895) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2018).

NPPES Registry Identity

NPI1053802454
Entity TypeIndividualFemale
Primary Taxonomy207W00000X
Provider Legal NameMARY WING SUM TAMCredential: MD
Location Address57 NORTH ST STE 415Danbury, CT 06810-5629
Mailing Address57 North St Ste 415Danbury, CT 06810-5629 · Fax (203) 628-4995
Phone(203) 628-4995
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2018
Enumeration DateMay 22, 2018
Last NPPES UpdateJuly 23, 20258 updates tracked since enumeration
NPPES CertifiedJuly 23, 2025
✔ NPI 1053802454 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
Licenses✔ Licensed in CT · 80895✔ Licensed in TX · T6053✔ Licensed in FL · ME163116✔ Licensed in NY · 960492
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Also ListedInternal MedicineTaxonomy 207R00000X · License 275696 (MA)
57 NORTH ST STE 415, Danbury, CT 06810
Open in Google Maps ↗

Other Identifiers 2

Medicaid119673400FL
Medicaid1053802454CT

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Ambetter of Alabama and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Wing Sum Tam Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9133475668
PECOS Enrollment IDI20231016002533, I20250527000735
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.
43 services41 patients
Exam of visual field with extended testing 92083
An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.
21 services19 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
17 services17 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06810 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality96.41
Promoting Interoperability78
Improvement Activities40
Cost67.21

Other Providers at the Same Location NPPES 2

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

THUYLINH N ROSCHANGAR O.D.
Optometrist
57 NORTH ST STE 415
DANBURY, CT 06810
Western Connecticut Planning Region (203) 794-0117
AMANDA DINSMORE MD
Ophthalmology
57 NORTH ST STE 415
DANBURY, CT 06810
Western Connecticut Planning Region (203) 794-0117

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 Mary Tam's NPI number?

The NPI number for Mary Tam is 1053802454. It was assigned to this individual provider in the NPPES registry on May 22, 2018.

Where is Mary Tam located?

Mary Tam practices at 57 North St Ste 415, Danbury, CT 06810. The listed phone number is (203) 628-4995.

What is Mary Tam's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Mary Tam enrolled in Medicare?

Yes. Mary Tam is registered in the Medicare PECOS enrollment system.

What insurance does Mary Tam accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AvMed and Blue Cross and Blue Shield of Louisiana and 3 other insurers list Mary Tam 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.

When was this NPI record last updated?

The NPPES record for Mary Tam was last updated on July 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.