MARK L DAY M.D.
NPI 1174679237
Internal Medicine in Staunton, IL

Q: What is Mark Day's NPI number?

The NPI number for Mark Day is 1174679237. It was assigned to this individual provider in the NPPES registry on January 25, 2007. The provider is also known as Dr. Mark Lee Day MD.

Q: What is Mark Day's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Day was last updated on September 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since January 25, 2007PECOS Enrolled

400 N CALDWELL ST, STAUNTON, IL 62088(618) 635-2200(618) 635-3400 Get Directions Write a Review

NPPES record last updated: September 29, 2020. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 29, 2020, Jul 22, 2020 (2 updates tracked since 2020).

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About Mark L Day M.d. NPPES

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

MARK L DAY M.D. (NPI 1174679237) is an individual internal medicine provider in Staunton, Illinois, licensed in Illinois (036.117437) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174679237

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMARK L DAYCredential: M.D.

Location Address400 N CALDWELL STStaunton, IL 62088-1173

Mailing Address200 Corporate BlvdLafayette, LA 70508-3870 · (800) 893-9698

Phone(618) 635-2200

Fax(618) 635-3400

Sole ProprietorYes

Enumeration DateJanuary 25, 2007

Last NPPES UpdateSeptember 29, 20202 updates tracked since enumeration

NPPES CertifiedSeptember 29, 2020

✔ NPI 1174679237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IL · 036.117437

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.

Also ListedEmergency MedicineTaxonomy 207P00000X · License 036.117437 (IL)

Also ListedGeneral Acute Care Hospital · Critical AccessTaxonomy 282NC0060X

400 N CALDWELL ST, Staunton, IL 62088

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Other Names 1

Other Name (5)Dr. Mark Lee Day Md

Other Identifiers 1

Other036117437IL · Illionis Medicaid

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark L Day M.d. 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.

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.

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

16 services16 patients

Emergency department visit with high level of medical decision making 99285

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62088 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

$131.14 typical visit price

range $56.28 – $173.35

Typical copayment $32.78 (range $14.07 – $43.33)

Most-billed visit code 99204

Established Patient

$99.71 typical visit price

range $17.51 – $139.99

Typical copayment $24.92 (range $4.37 – $34.99)

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.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. WALTER ALAN MCDONALD C.R.N.A.

Nurse Anesthetist, Certified Registered