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ALAN ESKER MD
NPI 1831159698
Internal Medicine in Freeport, IL

Active since March 24, 2006PECOS Enrolled
86.72/100
CMS Quality Rating
1010 FAIRWAY DR, FREEPORT, IL 61032(815) 599-7740 Get Directions Write a Review

NPPES record last updated: October 20, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alan Esker Md NPPES

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

ALAN ESKER MD (NPI 1831159698) is an individual internal medicine provider in Freeport, Illinois, licensed in Illinois (036-72602) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831159698
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameALAN ESKERCredential: MD
Location Address1010 FAIRWAY DRFreeport, IL 61032-6600
Mailing Address421 W Exchange St, Po Box 268Freeport, IL 61032-4030 · (815) 599-6000
Phone(815) 599-7740
Sole ProprietorNo
Enumeration DateMarch 24, 2006
Last NPPES UpdateOctober 20, 2017
✔ NPI 1831159698 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 · 036-72602
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.
1010 FAIRWAY DR, Freeport, IL 61032
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Other Identifiers 3

Medicaid036072602IL
Medicare UPINC48378IL
Medicare ID-Type UnspecifiedL65623IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alan Esker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Alan Esker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Freeport Memorial Hospital
1.9 mi
General Acute Care Hospital
1045 W STEPHENSON ST
Freeport, IL 61032
  • Reassigned Medicare billing, Illinois enrollment
  • 478 clinicians in this Medicare group
NPI 1447228788 (815) 599-6000
Freeport Regional Health Care Foundation
1.9 mi
Family Medicine
1036 W STEPHENSON ST
Freeport, IL 61032
  • Reassigned Medicare billing, Illinois enrollment
  • 391 clinicians in this Medicare group
NPI 1457337016 (815) 599-6000

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
23 services23 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61032 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

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.

86.72/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality93.48
Improvement Activities40
Cost64.04

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.

MADISON E PICKARD PT
Physical Therapist
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-6340
ROBERT GELLER MD
Internal Medicine (Infectious Disease)
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-6000
TAMISHA BONVILLAIN FNP-BC
Nurse Practitioner (Family)
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-6000
DR. RENU DOSI M.D.
Internal Medicine
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-7740
LYNDA A SHIRO FNP-BC
Nurse Practitioner (Family)
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-7740
DR. KEVIN D DRAXINGER M.D.
Orthopaedic Surgery
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-7730
APRIL LYNN JESSEN NP
Nurse Practitioner (Family)
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-6000
DIANA CAROL MCNULTY MD
Internal Medicine
1010 FAIRWAY DR
FREEPORT, IL 61032
Stephenson County (815) 599-7880

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 Alan Esker's NPI number?

The NPI number for Alan Esker is 1831159698. It was assigned to this individual provider in the NPPES registry on March 24, 2006.

Where is Alan Esker located?

Alan Esker practices at 1010 Fairway Dr, Freeport, IL 61032. The listed phone number is (815) 599-7740.

What is Alan Esker's specialty?

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

Is Alan Esker enrolled in Medicare?

Yes. Alan Esker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Alan Esker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alan Esker reassigns Medicare benefits to 2 organizations: Freeport Memorial Hospital (Freeport, IL) and Freeport Regional Health Care Foundation (Freeport, 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 Alan Esker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alan Esker was last updated on October 20, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.