DR. ADAM R. BLOCK D.O.
NPI 1437106630
Anesthesiology in Oak Lawn, IL
About Dr. Adam R. Block D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ADAM R. BLOCK D.O. (NPI 1437106630) is an individual anesthesiology provider in Oak Lawn, Illinois, licensed in Illinois (036109660) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Good Samaritan Hospital, and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (1999).
NPPES Registry Identity
Specialties & Licenses 2
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. Adam R. Block D.o. 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
3Medicare enrollment records show Adam Block reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- 93 clinicians in this Medicare group
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 385 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 3
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.
Advocate Good Samaritan Hospital
Acute Care Hospitals · Downers Grove, ILOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAK LAWN, IL 60453
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 Adam Block's NPI number?
The NPI number for Adam Block is 1437106630. It was assigned to this individual provider in the NPPES registry on May 31, 2006.
Where is Adam Block located?
Adam Block practices at 4440 W 95th St, Oak Lawn, IL 60453. The listed phone number is (708) 684-8000.
What is Adam Block's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Adam Block enrolled in Medicare?
Yes. Adam Block 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 Adam Block's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Adam Block reassigns Medicare benefits to 3 organizations: Midwest Anesthesiologists, Ltd. (Oak Lawn, IL), Advocate Health & Hospitals Corporation (Oak Lawn, IL) and Midwest Anesthesia Partners, LLC (Chicago, 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 Adam Block's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Adam Block affiliated with any hospitals?
According to CMS data, Adam Block is affiliated with Advocate Good Samaritan Hospital.
When was this NPI record last updated?
The NPPES record for Adam Block was last updated on June 26, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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. Adam R. Block, D.O. · NPI 1437106630
Anesthesiology physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since May 31, 2006.
## Identity
- **NPI:** 1437106630 (Entity type: Individual)
- **Enumerated:** May 31, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 036109660 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4440 W 95TH ST, Oak Lawn, IL 60453-2600
- **Phone:** (708) 684-8000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Midwest Anesthesiologists, Ltd. (NPI 1447209390, Oak Lawn, IL); Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL); Midwest Anesthesia Partners, LLC (NPI 1255380184, Chicago, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 1999
## Record status
- **NPPES last updated:** June 26, 2025
- **Other identifiers:** Medicaid 036109660 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1437106630) · Data from the CMS NPPES public registry.