Sanjay Joag, M.D.
NPI 1174543615 · Hospitalist Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sanjay Joag, M.D. is a Hospitalist Physician provider in Chicago, IL (NPI 1174543615).
Provider details
- NPI number
- 1174543615
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-107309 (IL)
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
219 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 Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 95 | $131 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 94 | $173 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 19 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 11 | $114 |
Typical Medicare-allowed amounts for these services range $114–$173 (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
Additional practice locations (2)
- 875 S Route 31Crystal Lake, IL 60014-8190Phone: (779) 220-5500
- 4309 W Medical Center Dr Ste A102Mchenry, IL 60050-8436Phone: (815) 338-6600
Registry dates
- Enumerated
- 2006-07-20
- Last updated
- 2023-10-18
- Certified
- 2023-10-17
Frequently asked questions
- What is Sanjay Joag's NPI number?
- Sanjay Joag's National Provider Identifier (NPI) is 1174543615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sanjay Joag's specialty?
- Sanjay Joag is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Sanjay Joag located?
- Sanjay Joag's practice location on file with NPPES is 2545 S King Dr, Chicago, IL 60616-2441.
- What is Sanjay Joag's phone number?
- The practice phone number listed in the NPPES registry for Sanjay Joag is (312) 842-7117.
- Does Sanjay Joag accept Medicare?
- Sanjay Joag is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sanjay Joag's NPI active?
- Yes — Sanjay Joag's NPI (1174543615) is active in the NPPES registry as of the last update on 2023-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.