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KARTIK K VISWANATHAN MD
NPI 1629150974
Internal Medicine in Norwich, CT

Active since October 19, 2006PECOS EnrolledAccepts Medicare Assignment
326 WASHINGTON ST, NORWICH, CT 06360(860) 889-8331(860) 892-6926 Get Directions Write a Review

NPPES record last updated: December 21, 2018. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Kartik K Viswanathan Md NPPES

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

KARTIK K VISWANATHAN MD (NPI 1629150974) is an individual internal medicine provider in Norwich, Connecticut, licensed in Connecticut (035789) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Holyoke Medical Center, and is a graduate of Other (1991).

NPPES Registry Identity

NPI1629150974
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameKARTIK K VISWANATHANCredential: MD
Location Address326 WASHINGTON STNorwich, CT 06360-2740
Mailing Address606 West Main StreetNorwich, CT 06360 · (860) 889-1400 · Fax (860) 889-3163
Phone(860) 889-8331
Fax(860) 892-6926
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateOctober 19, 2006
Last NPPES UpdateDecember 21, 2018
✔ NPI 1629150974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 035789
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.
326 WASHINGTON ST, Norwich, CT 06360
Open in Google Maps ↗

Other Identifiers 1

Medicaid001357898CT

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

Kartik K Viswanathan Md 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 ID7113902461
PECOS Enrollment IDI20180926001066
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 7

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.
233 services160 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.
124 services114 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.
73 services67 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
58 services33 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.
27 services24 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
15 services15 patients

Hospital Affiliations CMS Care Compare 2

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

Holyoke Medical Center

Acute Care Hospitals · Holyoke, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220024
Location575 Beech StreetHolyoke, MA 01040 · Hampden County
Emergency services

Baystate Medical Center

Acute Care Hospitals · Springfield, MA
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220077
Location759 Chestnut StreetSpringfield, MA 01199 · Hampden County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06360 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
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
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 3

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
11 suppliers41 claims104 services$6.49 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
8 suppliers17 claims25 services$1.09 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier11 claims11 services$183.93 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 20

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

NATALIE GLYBIN
Nurse Anesthetist, Certified Registered
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 889-8331
ROBERT V SCIALABBA LCSW
Social Worker (Clinical)
326 WASHINGTON ST, WILLIAM W BACKUS HOSPITAL
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 889-8331
PARUL PAHAL
Family Medicine
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 942-2565
DR. MOHAMMED A QURESHI MD
Internal Medicine (Geriatric Medicine)
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 889-8331
TATIANA E BICKNELL LCSW
Social Worker (Clinical)
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 823-6321
DR. DANIEL FAGNANT DO
Emergency Medicine
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 889-8331
CHERYL YUDKIN MSW
Social Worker
326 WASHINGTON ST, WILLIAM W BACKUS HOSPITAL
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 889-8331
NICOLE LOUISE ROBITAILLE
Physician Assistant (Surgical)
326 WASHINGTON ST
NORWICH, CT 06360
Southeastern Connecticut Planning Region (860) 326-8661

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 Kartik Viswanathan's NPI number?

The NPI number for Kartik Viswanathan is 1629150974. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Kartik Viswanathan located?

Kartik Viswanathan practices at 326 Washington St, Norwich, CT 06360. The listed phone number is (860) 889-8331.

What is Kartik Viswanathan's specialty?

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

Is Kartik Viswanathan enrolled in Medicare?

Yes. Kartik Viswanathan 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 Kartik Viswanathan accept?

Health plans from Anthem Blue Cross and Blue Shield list Kartik Viswanathan 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 Kartik Viswanathan affiliated with any hospitals?

According to CMS data, Kartik Viswanathan is affiliated with Holyoke Medical Center and Baystate Medical Center.

When was this NPI record last updated?

The NPPES record for Kartik Viswanathan was last updated on December 21, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.