DR. SHAJI MARIYAM BAIG MD
NPI 1023216405
Hospitalist in Mchenry, IL
About Dr. Shaji Mariyam Baig Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHAJI MARIYAM BAIG MD (NPI 1023216405) is an individual hospitalist provider in Mchenry, Illinois, licensed in Illinois (036122138) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Elgin.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
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. Shaji Mariyam Baig 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
2Medicare enrollment records show Shaji Baig reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 clinicians in this Medicare group
Park Ridge, IL 60068
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 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 6
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60050 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MCHENRY, IL 60050
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 Shaji Baig's NPI number?
The NPI number for Shaji Baig is 1023216405. It was assigned to this individual provider in the NPPES registry on July 6, 2007.
Where is Shaji Baig located?
Shaji Baig practices at 4309 W Medical Center Dr Ste A102, Mchenry, IL 60050. The listed phone number is (815) 759-4323.
What is Shaji Baig's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Shaji Baig enrolled in Medicare?
Yes. Shaji Baig 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 Shaji Baig's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shaji Baig reassigns Medicare benefits to 2 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL) and Lutheran General Hospital (Park Ridge, IL). 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 Shaji Baig's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Shaji Baig affiliated with any hospitals?
According to CMS data, Shaji Baig is affiliated with Northwestern Medicine Mchenry.
When was this NPI record last updated?
The NPPES record for Shaji Baig was last updated on May 14, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Shaji Mariyam Baig, MD · NPI 1023216405
Hospitalist physician in Mchenry, Illinois. Individual provider, active in the CMS NPPES registry since July 6, 2007.
## Identity
- **NPI:** 1023216405 (Entity type: Individual)
- **Enumerated:** July 6, 2007
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036122138 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4309 W MEDICAL CENTER DR STE A102, Mchenry, IL 60050
- **Phone:** (815) 759-4323
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Northwestern Medical Faculty Foundation (NPI 1346235314, Carol Stream, IL); Lutheran General Hospital (NPI 1801809306, Park Ridge, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** May 14, 2018
- **Other identifiers:** Other 036122138 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1023216405) · Data from the CMS NPPES public registry.