DEREK A MELBY DO
NPI 1033266473
Internal Medicine in South Holland, IL
About Derek A Melby Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DEREK A MELBY DO (NPI 1033266473) is an individual internal medicine provider in South Holland, Illinois, licensed in Illinois (036145502) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and maintains a secondary practice location in Palos Heights.
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
Derek A Melby Do 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
5Medicare enrollment records show Derek Melby reassigns Medicare billing to 5 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
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Bridgeton, MO 63044
- Reassigned Medicare billing, Illinois enrollment
- 419 clinicians in this Medicare group
Monroe, GA 30655
- Reassigned Medicare billing, South Carolina enrollment
- 311 clinicians in this Medicare group
Florence, SC 29506
- Reassigned Medicare billing, South Carolina enrollment
- 816 clinicians in this Medicare group
Greenville, NC 27834
- Reassigned Medicare billing, North Carolina enrollment
- 1,653 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 4
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 Trinity Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60473 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SOUTH HOLLAND, IL 60473
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 Derek Melby's NPI number?
The NPI number for Derek Melby is 1033266473. It was assigned to this individual provider in the NPPES registry on January 5, 2007.
Where is Derek Melby located?
Derek Melby practices at 100 W 162nd St, South Holland, IL 60473. The listed phone number is (708) 730-2200.
What is Derek Melby's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Derek Melby enrolled in Medicare?
Yes. Derek Melby 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 Derek Melby's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Derek Melby reassigns Medicare benefits to 5 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL), Sound Physicians Of Illinois, LLC (Bridgeton, MO), Hospital Physician Services - Southeast Professional Corporation (Monroe, GA), Mcleod Regional Medical Center Of The Pee Dee, Inc (Florence, SC) and Vidant Medical Group LLC (Greenville, NC). 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 Derek Melby's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Derek Melby affiliated with any hospitals?
According to CMS data, Derek Melby is affiliated with Advocate Trinity Hospital.
When was this NPI record last updated?
The NPPES record for Derek Melby was last updated on May 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Derek A Melby, DO · NPI 1033266473
Internal Medicine physician in South Holland, Illinois. Individual provider, active in the CMS NPPES registry since January 5, 2007.
## Identity
- **NPI:** 1033266473 (Entity type: Individual)
- **Enumerated:** January 5, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 036145502 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 W 162ND ST, South Holland, IL 60473-2003
- **Phone:** (708) 730-2200 · **Fax:** (708) 210-0625
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL); Sound Physicians Of Illinois, LLC (NPI 1043598865, Bridgeton, MO); Hospital Physician Services - Southeast Professional Corporation (NPI 1760410385, Monroe, GA); Mcleod Regional Medical Center Of The Pee Dee, Inc (NPI 1154371433, Florence, SC); Vidant Medical Group LLC (NPI 1477648731, Greenville, NC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 1995
## Record status
- **NPPES last updated:** May 30, 2023
- **Other identifiers:** Medicaid 036145502 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1033266473) · Data from the CMS NPPES public registry.