Ajay Chapa, MD
NPI 1689896441 · Diagnostic Radiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ajay Chapa, MD is a Diagnostic Radiology Physician provider in Chicago, IL (NPI 1689896441).
Provider details
- NPI number
- 1689896441
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2013025004 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,764 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Blood Creatinine Level82565 | 356 | $5 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 322 | $9 |
| X-Ray of Abdomen, 1 View74018 | 145 | $9 |
| X-Ray of Hip, 2-3 Views73502 | 138 | $11 |
| X-Ray of Foot, Minimum of 3 Views73630 | 109 | $8 |
| Mri Scan of Leg Joint Without Contrast73721 | 98 | $67 |
| X-Ray of Knee, 1-2 Views73560 |
Practice location
Mailing address
Additional practice locations (1)
- 510 S Kingshighway BlvdSaint Louis, MO 63110-1016Phone: (314) 362-7200Fax: (314) 747-4189
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2020-09-24
- Certified
- 2020-09-24
Frequently asked questions
- What is Ajay Chapa's NPI number?
- Ajay Chapa's National Provider Identifier (NPI) is 1689896441, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ajay Chapa's specialty?
- Ajay Chapa is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ajay Chapa located?
- Ajay Chapa's practice location on file with NPPES is 676 N Saint Clair St Ste 800, Chicago, IL 60611-2978.
- What is Ajay Chapa's phone number?
- The practice phone number listed in the NPPES registry for Ajay Chapa is (312) 695-5103.
- Does Ajay Chapa accept Medicare?
- Ajay Chapa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ajay Chapa's NPI active?
- Yes — Ajay Chapa's NPI (1689896441) is active in the NPPES registry as of the last update on 2020-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.