DR. AYAZ AHMAD MD
NPI 1629573142
Internal Medicine in Saint Louis, MO
About Dr. Ayaz Ahmad Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AYAZ AHMAD MD (NPI 1629573142) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (2021031235) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Columbus Regional Hospital, and maintains a secondary practice location in Saint Louis.
NPPES Registry Identity
Specialties & Licenses
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
Dr. Ayaz Ahmad 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.
Medicare Billing Reassignments
4Medicare enrollment records show Ayaz Ahmad reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 611 clinicians in this Medicare group
Indianapolis, IN 46240
- Reassigned Medicare billing, Indiana enrollment
- 20 clinicians in this Medicare group
Columbia, MD 21045
- Reassigned Medicare billing, Indiana enrollment
- 51 clinicians in this Medicare group
- Reassigned Medicare billing, Indiana enrollment
- 20 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 14
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Columbus Regional Hospital
Acute Care Hospitals · Columbus, INCommunity Hospital Of Anderson And Madison County
Acute Care Hospitals · Anderson, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63131 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SAINT LOUIS, MO 63131
SAINT LOUIS, MO 63131
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 Ayaz Ahmad's NPI number?
The NPI number for Ayaz Ahmad is 1629573142. It was assigned to this individual provider in the NPPES registry on March 27, 2018.
Where is Ayaz Ahmad located?
Ayaz Ahmad practices at 3015 N Ballas Rd, Saint Louis, MO 63131. The listed phone number is (314) 996-5772.
What is Ayaz Ahmad's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Ayaz Ahmad enrolled in Medicare?
Yes. Ayaz Ahmad 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 Ayaz Ahmad's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ayaz Ahmad reassigns Medicare benefits to 4 organizations: Physician Groups Lc (Saint Louis, MO), Proactive Clinical Partners - Aco (Indianapolis, IN), Provider Partners Care Management LP (Columbia, MD) and Proactive Clinical Partners (IN). 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 Ayaz Ahmad's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ayaz Ahmad accept?
Health plans from Anthem Blue Cross and Blue Shield and UnitedHealthcare list Ayaz Ahmad 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 Ayaz Ahmad affiliated with any hospitals?
According to CMS data, Ayaz Ahmad is affiliated with Columbus Regional Hospital and Community Hospital Of Anderson And Madison County.
When was this NPI record last updated?
The NPPES record for Ayaz Ahmad was last updated on May 16, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Ayaz Ahmad, MD · NPI 1629573142
Internal Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 27, 2018.
## Identity
- **NPI:** 1629573142 (Entity type: Individual)
- **Enumerated:** March 27, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2021031235 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3015 N BALLAS RD, Saint Louis, MO 63131-2329
- **Phone:** (314) 996-5772
## 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): Physician Groups Lc (NPI 1285664268, Saint Louis, MO); Proactive Clinical Partners - Aco (NPI 1821709031, Indianapolis, IN); Provider Partners Care Management LP (NPI 1013348028, Columbia, MD); Proactive Clinical Partners (IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** May 16, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1629573142) · Data from the CMS NPPES public registry.