1. Home
  2. Directory
  3. Missouri
  4. Ste Genevieve
  5. Internal Medicine
  6. NPI Profile

ZAKI HOSSAIN CHOWDHURY M.D.
NPI 1366456022
Internal Medicine in Ste Genevieve, MO

Active since July 28, 2006PECOS EnrolledAccepts Medicare Assignment
575 PINE DR, STE GENEVIEVE, MO 63670(573) 883-7474 Get Directions Write a Review

NPPES record last updated: February 13, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Zaki Hossain Chowdhury M.d. NPPES

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

ZAKI HOSSAIN CHOWDHURY M.D. (NPI 1366456022) is an individual internal medicine provider in Ste Genevieve, Missouri, licensed in Illinois (036109297) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Touchette Regional Hospital Inc, and maintains a secondary practice location in Oak Brook.

NPPES Registry Identity

NPI1366456022
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameZAKI HOSSAIN CHOWDHURYCredential: M.D.
Location Address575 PINE DRSte Genevieve, MO 63670-1446
Mailing AddressPo Box 366Ste Genevieve, MO 63670-0366 · (573) 883-2751
Phone(573) 883-7474
Sole ProprietorNo
Medical School CMSOtherGraduated 1993
Enumeration DateJuly 28, 2006
Last NPPES UpdateFebruary 13, 2026
NPPES CertifiedFebruary 13, 2026
✔ NPI 1366456022 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036109297
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.
575 PINE DR, Ste Genevieve, MO 63670
Open in Google Maps ↗

Other Names 1

Former Name (1)Md Zoglu Hossain Chowdhury

Secondary Practice Location 1

Location 13020 35th StOak Brook, IL 60523-2638 · Phone (618) 731-0188 · Fax (630) 541-7534

Other Identifiers 1

Medicaid036109297IL

Accepted Insurance

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

Zaki Hossain Chowdhury 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 ID1456345669
PECOS Enrollment IDI20040412000753, I20161216000111
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 Reassignments

5

Medicare enrollment records show Zaki Chowdhury reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ste Genevieve County Memorial Hospital
Same address
Rural Health
575 PINE DRIVE
Sainte Genevieve, MO 63670
NPI 1770504557 (573) 883-7424
Touchette Regional Hospital Inc
42 mi
Emergency Medicine
5900 BOND AVE
Cahokia Heights, IL 62207
  • Reassigned Medicare billing, Illinois enrollment
  • 68 clinicians in this Medicare group
NPI 1922019926 (618) 332-3060
Statera Health Care, LLC
83 mi
Emergency Medicine
100 DR WARREN TUTTLE DR
Harrisburg, IL 62946
  • Reassigned Medicare billing, Illinois enrollment
  • 169 clinicians in this Medicare group
NPI 1043874449 (618) 833-1691
Sarah Bush Lincoln Health Center
86 mi
Skilled Nursing Facility
650 W TAYLOR ST
Vandalia, IL 62471
  • Reassigned Medicare billing, Illinois enrollment
  • 652 clinicians in this Medicare group
NPI 1306959689 (618) 283-1232
Integritas Emergency Physician Services LLC
  • Reassigned Medicare billing, Illinois enrollment
  • 208 clinicians in this Medicare group
No phone listed

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 3

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.

Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
24 services24 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
24 services21 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
18 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Touchette Regional Hospital Inc

Acute Care Hospitals · Centreville, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number140077
Location5900 Bond AvenueCentreville, IL 62207 · St. Clair County
Emergency services

Mercy Hospital Perry

Critical Access Hospitals · Perryville, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number261311
Location434 North West StreetPerryville, MO 63775 · Perry County
Emergency services

Ste Genevieve County Memorial Hospital

Critical Access Hospitals · Sainte Genevieve, MO
OwnershipGovernment - Hospital District or Authority
CMS Certification Number261330
Location800 Ste Genevieve Drive, PO Box 468Sainte Genevieve, MO 63670 · Ste. Genevieve County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63670 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
$121.96 typical visit price
range $52.28 – $161.24
Typical copayment $30.49 (range $13.07 – $40.31)
Most-billed visit code 99204
Established Patient
$93.24 typical visit price
range $16.30 – $131.05
Typical copayment $23.31 (range $4.07 – $32.76)
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.

Other Providers at the Same Location NPPES 5

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

STE GENEVIEVE COUNTY MEMORIAL HOSPITAL
Pharmacy (Community/Retail Pharmacy)
575 PINE DR
STE GENEVIEVE, MO 63670
Ste. Genevieve County (573) 883-4415
DR. ERIKA LEUNG M.D.
Internal Medicine
575 PINE DR
STE GENEVIEVE, MO 63670
Ste. Genevieve County (573) 883-7474
MRS. KELLY RENEE GREIN APRN-FNP-C
Nurse Practitioner (Family)
575 PINE DR
STE GENEVIEVE, MO 63670
Ste. Genevieve County (573) 883-7474
MRS. MELISSA ANN NAEGER
Nurse Practitioner (Family)
575 PINE DR
STE GENEVIEVE, MO 63670
Ste. Genevieve County (573) 883-7474
KIMBERLY L BROWNE ANP
Nurse Practitioner (Adult Health)
575 PINE DR
STE GENEVIEVE, MO 63670
Ste. Genevieve County (573) 883-7474

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 Zaki Chowdhury's NPI number?

The NPI number for Zaki Chowdhury is 1366456022. It was assigned to this individual provider in the NPPES registry on July 28, 2006. The provider is also known as MD Zoglu Hossain Chowdhury.

Where is Zaki Chowdhury located?

Zaki Chowdhury practices at 575 Pine Dr, Ste Genevieve, MO 63670. The listed phone number is (573) 883-7474.

What is Zaki Chowdhury's specialty?

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

Is Zaki Chowdhury enrolled in Medicare?

Yes. Zaki Chowdhury 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 organizations bill Medicare for Zaki Chowdhury's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Zaki Chowdhury reassigns Medicare benefits to 5 organizations: Ste Genevieve County Memorial Hospital (Sainte Genevieve, MO), Touchette Regional Hospital Inc (Cahokia Heights, IL), Statera Health Care, LLC (Harrisburg, IL), Sarah Bush Lincoln Health Center (Vandalia, IL) and Integritas Emergency Physician Services LLC (IL). Each 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 Zaki Chowdhury's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Zaki Chowdhury accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 2 other insurers list Zaki Chowdhury 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 Zaki Chowdhury affiliated with any hospitals?

According to CMS data, Zaki Chowdhury is affiliated with Touchette Regional Hospital Inc, Mercy Hospital Perry and Ste Genevieve County Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Zaki Chowdhury was last updated on February 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.