ZARIR AHMED
NPI 1770937492
Internal Medicine - Gastroenterology in Saint Louis, MO
About Zarir Ahmed NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ZARIR AHMED (NPI 1770937492) is an individual gastroenterology provider in Saint Louis, Missouri, licensed in Missouri (2019024503) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses 4
Secondary Practice Location 1
Accepted 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
Zarir Ahmed 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.
Medicare Billing Reassignments
4Medicare enrollment records show Zarir Ahmed reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fenton, MO 63026
- Reassigned Medicare billing, Missouri enrollment
- 93 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 69 clinicians in this Medicare group
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 194 clinicians in this Medicare group
Saint Louis, MO 63104
- Reassigned Medicare billing, Missouri enrollment
- 1,294 clinicians in this Medicare group
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 5
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.
Hospital Affiliations CMS Care Compare 4
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, MOMercy Hospital Jefferson
Acute Care Hospitals · Festus, MOMercy Hospital Washington
Acute Care Hospitals · Washington, MOMercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63128
SAINT LOUIS, MO 63128
SAINT LOUIS, MO 63128
SAINT LOUIS, MO 63128
SAINT LOUIS, MO 63128
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 Zarir Ahmed's NPI number?
The NPI number for Zarir Ahmed is 1770937492. It was assigned to this individual provider in the NPPES registry on April 19, 2016.
Where is Zarir Ahmed located?
Zarir Ahmed practices at 10012 Kennerly Rd Ste 102, Saint Louis, MO 63128. The listed phone number is (314) 543-5911.
What is Zarir Ahmed's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Zarir Ahmed enrolled in Medicare?
Yes. Zarir Ahmed 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 Zarir Ahmed's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zarir Ahmed reassigns Medicare benefits to 4 organizations: Galen Inpatient Physicians PC. (Fenton, MO), Mercy Clinic Gastroenterology, LLC (Saint Louis, MO), Slh Physicians LLC (Saint Louis, MO) and Ssm Health Care Group (Saint Louis, MO). 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 Zarir Ahmed's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Zarir Ahmed 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 4 other insurers list Zarir Ahmed 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 Zarir Ahmed affiliated with any hospitals?
According to CMS data, Zarir Ahmed is affiliated with Mercy Hospital St Louis, Mercy Hospital Jefferson, Mercy Hospital Washington and Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Zarir Ahmed was last updated on August 15, 2024. 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.
# Zarir Ahmed · NPI 1770937492
Gastroenterology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 19, 2016.
## Identity
- **NPI:** 1770937492 (Entity type: Individual)
- **Enumerated:** April 19, 2016
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 2019024503 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 10012 KENNERLY RD STE 102, Saint Louis, MO 63128-2197
- **Phone:** (314) 543-5911 · **Fax:** (314) 543-5914
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Galen Inpatient Physicians PC. (NPI 1538714688, Fenton, MO); Mercy Clinic Gastroenterology, LLC (NPI 1528295334, Saint Louis, MO); Slh Physicians LLC (NPI 1881668051, Saint Louis, MO); Ssm Health Care Group (NPI 1306589544, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** August 15, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1770937492) · Data from the CMS NPPES public registry.