DOUGLAS ADAM MILLS D.O.
NPI 1043519481
Internal Medicine in Park Ridge, IL
About Douglas Adam Mills D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOUGLAS ADAM MILLS D.O. (NPI 1043519481) is an individual internal medicine provider in Park Ridge, Illinois, licensed in Illinois (125.059684) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, is affiliated with Texas Health Harris Methodist Hospital Southwest F, and is a graduate of Midwestern University, Chicago College Of Osteopathic Med (2011).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Douglas Adam Mills 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 Reassignment
Medicare enrollment records show Douglas Mills reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Flower Mound, TX 75028
- Reassigned Medicare billing, Texas enrollment
- 575 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 11
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.
Texas Health Harris Methodist Hospital Southwest F
Acute Care Hospitals · Fort Worth, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60068 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 3
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.
PARK RIDGE, IL 60068
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 Douglas Mills's NPI number?
The NPI number for Douglas Mills is 1043519481. It was assigned to this individual provider in the NPPES registry on March 24, 2011.
Where is Douglas Mills located?
Douglas Mills practices at 1775 W Dempster St 8 South, Park Ridge, IL 60068. The listed phone number is (847) 723-5871.
What is Douglas Mills's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Douglas Mills enrolled in Medicare?
Yes. Douglas Mills 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 organization bills Medicare for Douglas Mills's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Mills reassigns Medicare benefits to Texas Digestive Disease Consultants, PLLC (Flower Mound, TX). The 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 Douglas Mills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Douglas Mills accept?
Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 3 other insurers list Douglas Mills as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Douglas Mills affiliated with any hospitals?
According to CMS data, Douglas Mills is affiliated with Texas Health Harris Methodist Hospital Southwest F.
When was this NPI record last updated?
The NPPES record for Douglas Mills was last updated on July 4, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Douglas Adam Mills, D.O. · NPI 1043519481
Internal Medicine physician in Park Ridge, Illinois. Individual provider, active in the CMS NPPES registry since March 24, 2011.
## Identity
- **NPI:** 1043519481 (Entity type: Individual)
- **Enumerated:** March 24, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 125.059684 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1775 W DEMPSTER ST, 8 SOUTH, Park Ridge, IL 60068-1143
- **Phone:** (847) 723-5871
## 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:** Texas Digestive Disease Consultants, PLLC (NPI 1689650475, Flower Mound, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 2011
## Record status
- **NPPES last updated:** July 4, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1043519481) · Data from the CMS NPPES public registry.