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DR. ARCHADHAA SIVAKANTHAN-ADHIKARI MBBS
NPI 1477039311
Psychiatry & Neurology - Psychiatry in Stamford, CT

Active since July 13, 2018PECOS EnrolledAccepts Medicare Assignment
79.07/100
CMS Quality Rating
1 HOSPITAL PLZ, STAMFORD, CT 06902(203) 276-7111 Get Directions Write a Review

NPPES record last updated: September 14, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 13, 2023, Jan 13, 2023, Jul 13, 2018 (3 updates tracked since 2018).

About Dr. Archadhaa Sivakanthan-adhikari Mbbs NPPES

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

DR. ARCHADHAA SIVAKANTHAN-ADHIKARI MBBS (NPI 1477039311) is an individual psychiatry provider in Stamford, Connecticut, licensed in New York (316272) and active in the NPI registry since July 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1477039311
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameDR. ARCHADHAA SIVAKANTHAN-ADHIKARICredential: MBBS
Location Address1 HOSPITAL PLZStamford, CT 06902-3602
Mailing Address1 Hospital PlzStamford, CT 06902-3602
Phone(203) 276-7111
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateJuly 13, 2018
Last NPPES UpdateSeptember 14, 20233 updates tracked since enumeration
NPPES CertifiedSeptember 14, 2023
✔ NPI 1477039311 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in NY · 316272
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1 HOSPITAL PLZ, Stamford, CT 06902
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.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. Archadhaa Sivakanthan-adhikari 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 ID4880930411
PECOS Enrollment IDI20230914001263
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 2

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.

Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
37 services35 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
31 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06902 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
$183.10 typical visit price
range $60.82 – $183.10
Typical copayment $45.77 (range $15.20 – $45.77)
Most-billed visit code 99205
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.

79.07/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality73.19
Promoting Interoperability99
Improvement Activities40
Cost57.89

Other Providers at the Same Location NPPES 20

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

MR. MATHIAS AIHIOKHAI PA-C
Physician Assistant
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-1000
KRISTA ANN ULRICH PHYSICIAN ASSISTANT
Physician Assistant (Surgical)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7022
JEFFREY HAMRLICEK PA-C
Physician Assistant (Surgical)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7022
DR. SCOTT A. COLE M.D.
Obstetrics & Gynecology
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-2030
JOAN MORTAROTTI FNP-C
Nurse Practitioner (Family)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-2695
DR. ANDREAS BUB MD
Hospitalist
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7147
FAHMIDA BEGUM PA
Physician Assistant
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 276-7298
MARYANA GERMAN APRN
Nurse Practitioner (Family)
1 HOSPITAL PLZ
STAMFORD, CT 06902
Western Connecticut Planning Region (203) 348-7410

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 Archadhaa Sivakanthan-adhikari's NPI number?

The NPI number for Archadhaa Sivakanthan-adhikari is 1477039311. It was assigned to this individual provider in the NPPES registry on July 13, 2018.

Where is Archadhaa Sivakanthan-adhikari located?

Archadhaa Sivakanthan-adhikari practices at 1 Hospital Plz, Stamford, CT 06902. The listed phone number is (203) 276-7111.

What is Archadhaa Sivakanthan-adhikari's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Archadhaa Sivakanthan-adhikari enrolled in Medicare?

Yes. Archadhaa Sivakanthan-adhikari 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 Archadhaa Sivakanthan-adhikari accept?

Health plans from Providence Health Plan list Archadhaa Sivakanthan-adhikari 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 Archadhaa Sivakanthan-adhikari was last updated on September 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.