TAO-NAN CHI M.D.
NPI 1538279583
Internal Medicine in Norwalk, CT

Q: What is Tao-nan Chi's NPI number?

The NPI number for Tao-nan Chi is 1538279583. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Q: What is Tao-nan Chi's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Tao-nan Chi was last updated on May 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment

84.47/100

CMS Quality Rating

761 MAIN AVE, SUITE 201, NORWALK, CT 06851(203) 838-4000(203) 845-9535 Get Directions Write a Review

NPPES record last updated: May 21, 2013. Verified against the NPPES registry weekly; last sync: November 08, 2026.

On this page

About Tao-nan Chi M.d. NPPES

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

TAO-NAN CHI M.D. (NPI 1538279583) is an individual internal medicine provider in Norwalk, Connecticut, licensed in Connecticut (019430) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1970).

NPPES Registry Identity

NPI1538279583

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameTAO-NAN CHICredential: M.D.

Location Address761 MAIN AVE, SUITE 201Norwalk, CT 06851-1080

Mailing Address761 Main Ave, Suite 201Norwalk, CT 06851-1080 · (203) 838-4000 · Fax (203) 845-9535

Phone(203) 838-4000

Fax(203) 845-9535

Sole ProprietorNo

Medical School CMSOtherGraduated 1970

Enumeration DateAugust 30, 2006

Last NPPES UpdateMay 21, 2013

✔ NPI 1538279583 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CT · 019430

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.

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 019430 (CT)

761 MAIN AVE, Norwalk, CT 06851

Open in Google Maps ↗

Other Identifiers 3

Medicaid004187466CT

Medicare UPINC59630CT

Medicare ID-Type Unspecified060001215CT

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tao-nan Chi M.d. 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 ID9234130642

PECOS Enrollment IDI20070129000255

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.

Medicare Billing Reassignment

Medicare enrollment records show Tao-nan Chi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hartford Healthcare Medical Group Specialists, PLLC

56 mi

Surgery

85 SEYMOUR ST STE 415
Hartford, CT 06106

Reassigned Medicare billing, Connecticut enrollment
1,921 clinicians in this Medicare group

NPI 1023584216 (860) 246-2071

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

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.

561 services257 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.

394 services202 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.

159 services159 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.

106 services55 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

65 services63 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

58 services58 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

48 services39 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

48 services48 patients

Influenza vaccine split virus, preservative free 90662

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

39 services39 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

27 services24 patients

Administration of pneumococcal vaccine G0009

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

25 services25 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

22 services22 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

19 services17 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

18 services18 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

18 services17 patients

Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment G0402

An Initial Preventive Physical Examination, also known as a "Welcome to Medicare" visit, is a one-time, face-to-face visit during your first 12 months of Medicare enrollment. It includes a review of your health, as well as education and counseling about preventive services and further screenings.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06851 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.

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.

84.47/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

79.28

Promoting Interoperability

100

Improvement Activities

Cost

59.59

Reported Quality Measures

Cervical Cancer Screening

Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…

77%508 patients

Closing the Referral Loop: Receipt of Specialist Report

Percentage of patients with referrals, regardless of age, for which the referring provider receives a report from the provider to whom the patient was referred

3%155 patients1/55-star benchmark: 95%

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

97%1,294 patients5/55-star benchmark: 85%

Diabetes: Medical Attention for Nephropathy

The percentage of patients 18-75 years of age with diabetes who had a nephropathy screening test or evidence of nephropathy during the measurement period

100%317 patients5/55-star benchmark: 99%

Documentation of Current Medications in the Medical Record

Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.

88%5,546 patients3/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

96%9,039 patients4/55-star benchmark: 99%

Falls: Screening for Future Fall Risk

Percentage of patients 65 years of age and older who were screened for future fall risk during the measurement period

32%998 patients2/55-star benchmark: 99%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

72%497 patients1/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

29%2,296 patients2/55-star benchmark: 97%

Pneumococcal Vaccination Status for Older Adults

Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine

73%999 patients4/55-star benchmark: 90%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

23%2,296 patients1/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

35%2,296 patients2/55-star benchmark: 89%

Use of High-Risk Medications in the Elderly

Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.

Lower rates are better for this measure.

Patients 2+: 0% · 999 patients

1%999 patients5/55-star benchmark: 100%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

25%2,296 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 9

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

15 suppliers46 claims115 services$4.78 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

8 suppliers18 claims20 services$0.92 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

2 suppliers26 claims26 services$13.64 avg. paid by Medicare

Wheelchair accessory, headrest, cushioned, any type, including fixed mounting hardware, each E0955

DME-Wheelchairs · category DD021N

2 suppliers21 claims21 services$14.05 avg. paid by Medicare

Wheelchair accessory, manual swingaway, retractable or removable mounting hardware for joystick, other control interface or positioning accessory E1028

DME-Wheelchairs · category DD021N

2 suppliers22 claims27 services$14.96 avg. paid by Medicare

Manual adult size wheelchair, includes tilt in space E1161

DME-Wheelchairs · category DD000N

2 suppliers21 claims21 services$190.83 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.

CHRISTINA CHAO P.A.

Physician Assistant

761 MAIN AVE, SUITE 102
NORWALK, CT 06851

Western Connecticut Planning Region (203) 810-4151

ILLUME FERTILITY, PLLC

Obstetrics & Gynecology (Reproductive Endocrinology)

761 MAIN AVE, SUITE 200
NORWALK, CT 06851

Western Connecticut Planning Region (203) 750-7400

ILLUME FERTILITY, PLLC

Clinic/Center (Ambulatory Fertility Facility)

761 MAIN AVE, SUITE 200
NORWALK, CT 06851

Western Connecticut Planning Region (203) 750-7400

PAULINE ANNE SHARMA PA-C

Physician Assistant

761 MAIN AVE, SUITE 101
NORWALK, CT 06851

Western Connecticut Planning Region (203) 845-2244

SPENCER S. RICHLIN MD

Obstetrics & Gynecology (Reproductive Endocrinology)

761 MAIN AVE, SUITE 200
NORWALK, CT 06851

Western Connecticut Planning Region (203) 750-7400

MARIA A MARTIN M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

761 MAIN AVE, SUITE 201
NORWALK, CT 06851

Western Connecticut Planning Region (203) 838-4000

DR. FRANK JOHN PINTO JR. MD

Dermatology

761 MAIN AVE, SUITE 102
NORWALK, CT 06851

Western Connecticut Planning Region (203) 810-4151

DR. MANDY SHER GREENBERG M.D.

Surgery (Surgical Oncology)

761 MAIN AVE, SUITE 203
NORWALK, CT 06851

Western Connecticut Planning Region (203) 846-6012

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 Tao-nan Chi's NPI number?

The NPI number for Tao-nan Chi is 1538279583. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Tao-nan Chi located?

Tao-nan Chi practices at 761 Main Ave Suite 201, Norwalk, CT 06851. The listed phone number is (203) 838-4000.

What is Tao-nan Chi's specialty?

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

Is Tao-nan Chi enrolled in Medicare?

Yes. Tao-nan Chi 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.

Which organization bills Medicare for Tao-nan Chi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tao-nan Chi reassigns Medicare benefits to Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tao-nan Chi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tao-nan Chi accept?

Health plans from Anthem Blue Cross and Blue Shield list Tao-nan Chi 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 Tao-nan Chi was last updated on May 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.