MARI B BAKER M.D.
NPI 1962431585
Emergency Medicine in Peoria, IL

Q: What is Mari Baker's NPI number?

The NPI number for Mari Baker is 1962431585. It was assigned to this individual provider in the NPPES registry on July 3, 2006.

Q: What is Mari Baker's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Mari Baker was last updated on March 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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 July 03, 2006PECOS EnrolledAccepts Medicare Assignment

8940 N WOOD SAGE RD, PEORIA, IL 61615(309) 243-3000(309) 243-3070 Get Directions Write a Review

NPPES record last updated: March 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mari B Baker M.d. NPPES

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

MARI B BAKER M.D. (NPI 1962431585) is an individual emergency medicine provider in Peoria, Illinois, licensed in Illinois (036-114578) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Saint Francis Medical Center, and is a graduate of Southern Illinois University School Of Medicine (2003).

NPPES Registry Identity

NPI1962431585

Entity TypeIndividualFemale

Primary Taxonomy207P00000X

Provider Legal NameMARI B BAKERCredential: M.D.

Location Address8940 N WOOD SAGE RDPeoria, IL 61615-7822

Mailing Address8940 N Wood Sage RdPeoria, IL 61615-7822 · (309) 243-3000 · Fax (309) 243-3070

Phone(309) 243-3000

Fax(309) 243-3070

Sole ProprietorNo

Medical School CMSSouthern Illinois University School Of MedicineGraduated 2003

Enumeration DateJuly 3, 2006

Last NPPES UpdateMarch 2, 2026

NPPES CertifiedMarch 2, 2026

✔ NPI 1962431585 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in IL · 036-114578

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

8940 N WOOD SAGE RD, Peoria, IL 61615

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Other Identifiers 3

OtherCA3486IL · Medicare Rr Group

Medicaid036114578IL

Other800810Medicare Group No.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mari B Baker M.d. 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 ID3870517154

PECOS Enrollment IDI20060125000801

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 23

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.

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

190 services99 patients

Gammaglobulin (immune system protein) measurement 82784

Gammaglobulin measurement is a blood test that checks the levels of certain proteins (gammaglobulins) that the body uses to fight infections. High or low levels can indicate various health conditions. It's a simple, quick procedure with minimal discomfort.

165 services51 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

162 services100 patients

Iron level 83540

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

121 services79 patients

Iron binding capacity 83550

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

121 services79 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

120 services79 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

111 services93 patients

Measurement of immunoglobulin light chains 83521

Measurement of immunoglobulin light chains is a blood test that helps to detect and monitor certain disorders related to your immune system. It measures the levels of specific proteins, known as light chains, produced by your immune cells.

110 services52 patients

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.

73 services59 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

70 services70 patients

Cyanocobalamin (vitamin b-12) level 82607

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

61 services55 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

59 services53 patients

Protein measurement, serum 84165

A serum protein measurement is a blood test that determines the levels of proteins in your blood. It is used to evaluate your overall health, and diagnose nutritional problems, kidney disease, liver disease, or immune disorders.

53 services51 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.

53 services45 patients

Immunologic analysis technique on serum (immunofixation) 86334

Immunofixation is a lab test that helps identify proteins called immunoglobulins in your blood serum. These proteins are part of your immune system. Changes in their levels can indicate certain diseases. The test is simple and only requires a blood sample.

41 services39 patients

Lactate dehydrogenase (enzyme) level 83615

A Lactate Dehydrogenase level test measures the amount of this enzyme in your body. It's often done when tissue damage is suspected, as high levels can indicate issues like heart disease, lung disease, liver disease, or blood disorders. This test helps in diagnosing and monitoring these conditions.

37 services36 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

29 services29 patients

Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less 96367

This procedure involves injecting fluids or medication directly into your vein. It's used for treatment, prevention, or diagnosis. An additional sequential infusion may be given within an hour if needed. This helps to ensure the medicine is distributed effectively in your body.

23 services12 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

18 services16 patients

Folic acid level, serum 82746

A Folic Acid Level, Serum test measures the amount of folic acid, a type of B vitamin, in your blood. This vitamin is important for cell growth and development. It's crucial for your body to function well. If your levels are low, it may indicate a deficiency, which can lead to health issues.

17 services16 patients

Phosphate level 84100

A phosphate level test measures the amount of phosphate in your blood. Phosphate is a chemical that contains the mineral phosphorus, crucial for energy production, muscle and nerve function, and bone growth. Imbalances may indicate kidney disease or other health issues.

17 services12 patients

Administration of chemotherapy into vein, 1 hour or less 96413

Chemotherapy is a treatment that uses drugs to destroy cancer cells. When administered into a vein, it's often through an IV. This procedure usually lasts 1 hour or less. You may feel a slight pinch as the needle is inserted, but it's generally painless.

17 services16 patients

Telephone medical discussion with physician, 11-20 minutes 99442

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Saint Francis Medical Center

Acute Care Hospitals · Peoria, IL

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140067

Location530 NE Glen Oak AvePeoria, IL 61637 · Peoria County

Emergency services Birthing friendly

Osf Saint Elizabeth Mdl Ctr

Acute Care Hospitals · Ottawa, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140110

Location1100 E Norris DriveOttawa, IL 61350 · La Salle County

Emergency services Birthing friendly

Pekin Memorial Hospital

Acute Care Hospitals · Pekin, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140120

Location600 South 13th StreetPekin, IL 61554 · Tazewell County

Emergency services

St Joseph Medical Center

Acute Care Hospitals · Bloomington, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140162

Location2200 E WashingtonBloomington, IL 61701 · Mc Lean County

Emergency services Birthing friendly

Methodist Medical Center Of Illinois

Acute Care Hospitals · Peoria, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140209

Location221 N E Glen Oak AvePeoria, IL 61636 · Peoria County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61615 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

$85.71 typical visit price

range $54.80 – $168.44

Typical copayment $21.42 (range $13.70 – $42.11)

Most-billed visit code 99203

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.

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.

DEBRA E BEACH APN

Clinical Nurse Specialist