1. Home
  2. Directory
  3. Missouri
  4. Saint Louis
  5. Internal Medicine
  6. NPI Profile

SONIA CHACKO M.D.
NPI 1497951008
Internal Medicine in Saint Louis, MO

Active since June 22, 2007PECOS EnrolledAccepts Medicare Assignment
3635 VISTA AVE, SAINT LOUIS, MO 63110(314) 577-8000 Get Directions Write a Review

NPPES record last updated: March 29, 2011. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Sonia Chacko M.d. NPPES

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

SONIA CHACKO M.D. (NPI 1497951008) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (2010031163) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1497951008
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameSONIA CHACKOCredential: M.D.
Location Address3635 VISTA AVESaint Louis, MO 63110-2539
Mailing Address3660 Vista AveSaint Louis, MO 63110-2540 · (314) 977-6100 · Fax (314) 977-6164
Phone(314) 577-8000
Sole ProprietorYes
Medical School CMSOtherGraduated 1999
Enumeration DateJune 22, 2007
Last NPPES UpdateMarch 29, 2011
✔ NPI 1497951008 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2010031163
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.
3635 VISTA AVE, Saint Louis, MO 63110
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan 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 and accepts Medicare assignment

Sonia Chacko 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 ID1153447917
PECOS Enrollment IDI20100929000846
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 10

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.
325 services232 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.
166 services166 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.
59 services58 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.
56 services55 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.
48 services42 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.
29 services25 patients

Hospital Affiliations CMS Care Compare 5

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Mercy Hospital Jefferson

Acute Care Hospitals · Festus, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260023
Location1400 Us Highway 61Festus, MO 63028 · Jefferson County
Emergency services

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63110 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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 4

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
10 suppliers21 claims42 services$6.29 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
2 suppliers14 claims84 services$13.47 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
2 suppliers14 claims14 services$47.60 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
2 suppliers14 claims84 services$1.69 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.

DR. CHRIS C.W. CHAN M.D.
Internal Medicine
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8000
STEVEN NGUYEN M.D.
Internal Medicine
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8000
DR. PUJAN H PATEL M.D. BS
Internal Medicine
3635 VISTA AVE, 7TH FLOOR DESLOGE TOWER
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8856
MICHAEL RYAN CAVALIER
Registered Nurse (Emergency)
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8777
JANET LAQUET PHARMD
Pharmacist (Oncology)
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 257-8516
TENET HEALTHSYSTEM SL, INC.
General Acute Care Hospital
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8000
NECAT HAVLIOGLU MD
Pathology (Anatomic Pathology & Clinical Pathology)
3635 VISTA AVE, SAINT LOUIS UNIVERSITY PATHOLOGY SERVICES
SAINT LOUIS, MO 63110
St. Louis City (314) 577-8475
DR. DANIEL KEVIN HOLT MD
Radiology (Diagnostic Radiology)
3635 VISTA AVE
SAINT LOUIS, MO 63110
St. Louis City (314) 268-5783

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 Sonia Chacko's NPI number?

The NPI number for Sonia Chacko is 1497951008. It was assigned to this individual provider in the NPPES registry on June 22, 2007.

Where is Sonia Chacko located?

Sonia Chacko practices at 3635 Vista Ave, Saint Louis, MO 63110. The listed phone number is (314) 577-8000.

What is Sonia Chacko's specialty?

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

Is Sonia Chacko enrolled in Medicare?

Yes. Sonia Chacko 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 Sonia Chacko accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 4 other insurers list Sonia Chacko 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 Sonia Chacko affiliated with any hospitals?

According to CMS data, Sonia Chacko is affiliated with Mercy Hospital St Louis, Mercy Hospital Jefferson, Barnes Jewish Hospital, Mercy Hospital South and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Sonia Chacko was last updated on March 29, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.