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ALLAN TACHAUER MD
NPI 1679506489
Internal Medicine in Chicago, IL

Active since July 08, 2006PECOS EnrolledAccepts Medicare Assignment
4824 N SHERIDAN RD, CHICAGO, IL 60640(773) 564-7405 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Allan Tachauer Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALLAN TACHAUER MD (NPI 1679506489) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (036-082927) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Thorek Memorial Hospital, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1679506489
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameALLAN TACHAUERCredential: MD
Location Address4824 N SHERIDAN RDChicago, IL 60640-3704
Mailing Address2368 Paysphere CirChicago, IL 60674-2368
Phone(773) 564-7405
Sole ProprietorNo
Medical School CMSOtherGraduated 1985
Enumeration DateJuly 8, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1679506489 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036-082927
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4824 N SHERIDAN RD, Chicago, IL 60640
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Other Identifiers 3

Medicare ID-Type UnspecifiedK09989
Medicaid036082927IL
Medicare UPINI66634

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

Allan Tachauer 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.

PECOS PAC ID7214906544
PECOS Enrollment IDI20041001000980
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Allan Tachauer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Resilience Healthcare - Lakefront Medical Associates, LLC
0.4 mi
General Practice
4646 N MARINE DR
Chicago, IL 60640
  • Reassigned Medicare billing, Illinois enrollment
  • 82 clinicians in this Medicare group
NPI 1205301926 (773) 878-8700
Thorek Memorial Hospital
1.1 mi
General Acute Care Hospital
850 W IRVING PARK RD
Chicago, IL 60613
  • Reassigned Medicare billing, Illinois enrollment
  • 61 clinicians in this Medicare group
NPI 1982643961 (773) 525-6780

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
78 services42 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
17 services16 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Thorek Memorial Hospital

Acute Care Hospitals · Chicago, IL
OwnershipVoluntary non-profit - Private
CMS Certification Number140115
Location850 W Irving Park RdChicago, IL 60613 · Cook County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60640 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Allan Tachauer's NPI number?

The NPI number for Allan Tachauer is 1679506489. It was assigned to this individual provider in the NPPES registry on July 8, 2006.

Where is Allan Tachauer located?

Allan Tachauer practices at 4824 N Sheridan Rd, Chicago, IL 60640. The listed phone number is (773) 564-7405.

What is Allan Tachauer's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Allan Tachauer enrolled in Medicare?

Yes. Allan Tachauer 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 Allan Tachauer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Allan Tachauer reassigns Medicare benefits to 2 organizations: Resilience Healthcare - Lakefront Medical Associates, LLC (Chicago, IL) and Thorek Memorial Hospital (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 Allan Tachauer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Allan Tachauer affiliated with any hospitals?

According to CMS data, Allan Tachauer is affiliated with Thorek Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Allan Tachauer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.