ERNESTO TAN MD
NPI 1699882084
Urology in Lockport, IL
About Ernesto Tan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ERNESTO TAN MD (NPI 1699882084) is an individual urology provider in Lockport, Illinois, licensed in Illinois (036049705) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Graham Hospital Association, and is a graduate of Other (1972).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Ernesto Tan 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 Ernesto Tan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Des Plaines, IL 60016
- Reassigned Medicare billing, Illinois enrollment
- 443 clinicians in this Medicare group
Williamsfield, IL 61489
- Reassigned Medicare billing, Illinois enrollment
- 134 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 2
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Graham Hospital Association
Acute Care Hospitals · Canton, ILSaint Francis Medical Center
Acute Care Hospitals · Peoria, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60441 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOCKPORT, IL 60441
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 Ernesto Tan's NPI number?
The NPI number for Ernesto Tan is 1699882084. It was assigned to this individual provider in the NPPES registry on August 23, 2006.
Where is Ernesto Tan located?
Ernesto Tan practices at 300 Read St Ste A, Lockport, IL 60441. The listed phone number is (815) 741-1020.
What is Ernesto Tan's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Ernesto Tan enrolled in Medicare?
Yes. Ernesto Tan 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 Ernesto Tan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ernesto Tan reassigns Medicare benefits to 2 organizations: Prime Healthcare Illinois Medical Group LLC (Des Plaines, IL) and Graham Hospital Association (Williamsfield, 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 Ernesto Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ernesto Tan accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Ernesto Tan 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 Ernesto Tan affiliated with any hospitals?
According to CMS data, Ernesto Tan is affiliated with Graham Hospital Association and Saint Francis Medical Center.
When was this NPI record last updated?
The NPPES record for Ernesto Tan was last updated on August 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.
# Ernesto Tan, MD · NPI 1699882084
Urology physician in Lockport, Illinois. Individual provider, active in the CMS NPPES registry since August 23, 2006.
## Identity
- **NPI:** 1699882084 (Entity type: Individual)
- **Enumerated:** August 23, 2006
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** 036049705 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 READ ST STE A, Lockport, IL 60441-3265
- **Phone:** (815) 741-1020 · **Fax:** (815) 741-1064
## 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): Prime Healthcare Illinois Medical Group LLC (NPI 1023837689, Des Plaines, IL); Graham Hospital Association (NPI 1508463563, Williamsfield, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1972
## Record status
- **NPPES last updated:** August 30, 2023
- **Other identifiers:** Other IL3265; Other 1467471540; Other DF2482
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Source: [NPI Profile](https://npiprofile.com/npi/1699882084) · Data from the CMS NPPES public registry.