Nirmal Singh
NPI 1831757921 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nirmal Singh is a Internal Medicine Physician provider in Chicago, IL (NPI 1831757921).
Provider details
- NPI number
- 1831757921
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 125.074370 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
256 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 256 | $169 |
Typical Medicare-allowed amounts for these services range $169–$169 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-03
- Last updated
- 2019-06-03
Frequently asked questions
- What is Nirmal Singh's NPI number?
- Nirmal Singh's National Provider Identifier (NPI) is 1831757921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nirmal Singh's specialty?
- Nirmal Singh is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nirmal Singh located?
- Nirmal Singh's practice location on file with NPPES is 1500 S Fairfield Ave, Chicago, IL 60608-1782.
- What is Nirmal Singh's phone number?
- The practice phone number listed in the NPPES registry for Nirmal Singh is (559) 577-4180.
- Does Nirmal Singh accept Medicare?
- Nirmal Singh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nirmal Singh's NPI active?
- Yes — Nirmal Singh's NPI (1831757921) is active in the NPPES registry as of the last update on 2019-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.