DR. DEMETRIOS JOHN LOUIS M.D.
NPI 1477709442
Anesthesiology - Pain Medicine in Arlington Heights, IL

Q: What is Demetrios Louis's NPI number?

The NPI number for Demetrios Louis is 1477709442. It was assigned to this individual provider in the NPPES registry on August 11, 2008.

Q: What is Demetrios Louis's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Q: When was this NPI record last updated?

The NPPES record for Demetrios Louis was last updated on April 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 August 11, 2008PECOS EnrolledAccepts Medicare Assignment

81.04/100

CMS Quality Rating

2101 S. ARLINGTON HEIGHTS ROAD, SUITE 165, ARLINGTON HEIGHTS, IL 60005(847) 593-6800(847) 593-6803 Get Directions Write a Review

NPPES record last updated: April 24, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Demetrios John Louis M.d. NPPES

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

DR. DEMETRIOS JOHN LOUIS M.D. (NPI 1477709442) is an individual pain medicine provider in Arlington Heights, Illinois, licensed in Illinois (036122435) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of Other (2004).

NPPES Registry Identity

NPI1477709442

Entity TypeIndividualMale

Primary Taxonomy207LP2900X

Provider Legal NameDR. DEMETRIOS JOHN LOUISCredential: M.D.

Location Address2101 S. ARLINGTON HEIGHTS ROAD, SUITE 165Arlington Heights, IL 60005-4142

Mailing Address2101 S. Arlington Heights Road, Suite 165Arlington Heights, IL 60005-4142 · (847) 593-6800 · Fax (847) 593-6803

Phone(847) 593-6800

Fax(847) 593-6803

Sole ProprietorYes

Medical School CMSOtherGraduated 2004

Enumeration DateAugust 11, 2008

Last NPPES UpdateApril 24, 2014

✔ NPI 1477709442 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

License✔ Licensed in IL · 036122435

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedAnesthesiologyTaxonomy 207L00000X · License 125048597 (IL)

2101 S. ARLINGTON HEIGHTS ROAD, Arlington Heights, IL 60005

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.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

Dr. Demetrios John Louis 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 ID4082766530

PECOS Enrollment IDI20111230000269

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

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

Innovative Pain Specialists LLC

Same address

Pain Medicine

2101 S ARLINGTON HEIGHTS RD, SUITE 165
Arlington Heights, IL 60005

Reassigned Medicare billing, Illinois enrollment
2 clinicians in this Medicare group

NPI 1982988663 (847) 593-6800

Windy City Anesthesia PC

38 mi

Nurse Anesthetist, Certified Registered

21120 WASHINGTON PKWY
Frankfort, IL 60423

Reassigned Medicare billing, Illinois enrollment
164 clinicians in this Medicare group

NPI 1932248622 (847) 691-9080

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 32

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.

Low osmolar contrast material, 200-299 mg/ml iodine concentration, per ml Q9966

Low osmolar contrast material with 200-299 mg/ml iodine concentration is a type of dye used in certain medical tests like CT scans or X-rays. It helps to highlight specific areas in your body, making them easier to see and examine. It's safe and commonly used.

2,620 services159 patients

Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg J7320

Genvisc 850 is an injection containing hyaluronan, a substance naturally found in your joints. It helps to lubricate and cushion your joints. This treatment is used to relieve knee pain due to osteoarthritis when other treatments have not worked.

1,700 services11 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

1,696 services125 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.

718 services242 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.

277 services165 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

181 services35 patients

Injection, midazolam hydrochloride, per 1 mg J2250

Midazolam hydrochloride is a medication injected to help you relax or sleep before surgery or certain medical procedures. It works by calming the brain and nerves. It's given in small doses, measured in milligrams (mg).

135 services57 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.

132 services132 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

73 services62 patients

Injection of substance into lower spine canal using imaging guidance 62323

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

69 services60 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

68 services23 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance 27096

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

68 services57 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

55 services34 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level 64494

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

51 services33 patients

Ringers lactate infusion, up to 1000 cc J7120

A Ringers lactate infusion is a treatment where a solution, containing essential electrolytes and lactate, is delivered into your bloodstream through an IV. This helps to replenish fluids and maintain balance in your body. It's often used during or after surgery.

45 services43 patients

Blood glucose (sugar) level 82947

A blood glucose level test measures the amount of sugar in your blood. It's often used to monitor and manage conditions like diabetes. High or low levels can indicate a health issue. The test is usually done by pricking your finger for a small blood sample.

42 services25 patients

Testing for presence of drug, read by direct observation 80305

Testing for the presence of drugs involves collecting a sample, usually urine, which is then analyzed for specific substances. The process is monitored directly to ensure accuracy and integrity. This test helps to confirm if drugs are present in your system.

40 services27 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level 64484

This procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.

39 services36 patients

Injection, propofol, 10 mg J2704

Propofol is a medication given via injection to help you relax or sleep during surgery or other medical procedures. The 10 mg dosage refers to the amount of medication you'll receive. It's administered by a healthcare professional and monitored closely for safety.

33 services11 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

29 services25 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

28 services24 patients

Injection of substance into middle or upper spine canal using imaging guidance 62321

This procedure involves injecting a substance into your middle or upper spine canal. It's performed under imaging guidance to ensure accuracy. The substance can help diagnose or treat various conditions, providing relief from symptoms.

26 services23 patients

Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance 01938

This procedure involves using anesthesia to numb your lower back for certain procedures like injections, drainage, or aspiration on your spine or spinal cord. Imaging guidance is used to accurately locate the area to be treated, ensuring precision and safety.

24 services15 patients

Anesthesia for nerve destruction procedures on spine or spinal cord of lower back accessed through skin using imaging guidance 01940

This is a procedure where anesthesia is applied to numb specific nerves in your lower back. Using imaging guidance, the doctor can accurately locate these nerves through the skin. This is done to alleviate pain by disrupting nerve signals. It's a safe and effective method.

24 services23 patients

Injection, methylprednisolone acetate, 80 mg J1040

Methylprednisolone acetate is a strong anti-inflammatory medication. It is often given as an 80 mg injection to reduce inflammation and pain. It's commonly used for conditions like arthritis, allergic disorders, or other inflammatory diseases.

24 services24 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint 64635

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

15 services15 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

15 services14 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

14 services14 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint 64636

This procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.

13 services13 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.

13 services12 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

12 services12 patients

Anesthesia for nerve modulation procedure spinal cord or repair of bone of spine of lower back accessed through skin using imaging guidance 01942

Anesthesia for nerve modulation or spine repair involves numbing the lower back area. This is done to ensure you don't feel pain during the procedure. The doctor uses imaging technology to accurately place the anesthetic. This makes the procedure safer and more effective.

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.

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140010

Location2650 Ridge AveEvanston, IL 60201 · Cook County

Emergency services Birthing friendly

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140116

Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County

Emergency services Birthing friendly

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140130

Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County

Emergency services Birthing friendly

Advocate Condell Medical Center

Acute Care Hospitals · Libertyville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140202

Location801 S Milwaukee AveLibertyville, IL 60048 · Lake County

Emergency services Birthing friendly

Northwest Community Hospital 1

Acute Care Hospitals · Arlington Heights, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140252

Location800 W Central RoadArlington Heights, IL 60005 · Cook County

Emergency services Birthing friendly

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.

81.04/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

69.9

Promoting Interoperability

Improvement Activities

Reported Quality Measures

Advance Care Plan

0%481 patients1/55-star benchmark: 100%

Closing the Referral Loop: Receipt of Specialist Report

44%323 patients3/55-star benchmark: 87%

Colorectal Cancer Screening

8%558 patients1/55-star benchmark: 88%

Diabetes: Eye Exam

0%59 patients1/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

100%59 patients1/55-star benchmark: 91%

Documentation of Current Medications in the Medical Record

98%3,027 patients4/55-star benchmark: 100%

e-Prescribing

99%357 patients4/55-star benchmark: 100%

Falls: Screening for Future Fall Risk

0%444 patients1/55-star benchmark: 100%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

23%895 patients1/55-star benchmark: 98%

Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented

19%2,911 patients2/55-star benchmark: 61%

Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention

Patients screened: 0% · 662 patients

0%662 patients

Provide Patients Electronic Access to Their Health Information

73%449 patients3/55-star benchmark: 100%

Statin Therapy for the Prevention and Treatment of Cardiovascular Disease

89%62 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 467 patients

Patients totalRate: 4% · 467 patients

4%467 patients4/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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 Demetrios Louis's NPI number?

The NPI number for Demetrios Louis is 1477709442. It was assigned to this individual provider in the NPPES registry on August 11, 2008.

Where is Demetrios Louis located?

Demetrios Louis practices at 2101 S. Arlington Heights Road Suite 165, Arlington Heights, IL 60005. The listed phone number is (847) 593-6800.

What is Demetrios Louis's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Demetrios Louis enrolled in Medicare?

Yes. Demetrios Louis 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 Demetrios Louis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Demetrios Louis reassigns Medicare benefits to 2 organizations: Innovative Pain Specialists LLC (Arlington Heights, IL) and Windy City Anesthesia PC (Frankfort, 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 Demetrios Louis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Demetrios Louis accept?

Health plans from Oscar Health list Demetrios Louis 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 Demetrios Louis affiliated with any hospitals?

According to CMS data, Demetrios Louis is affiliated with Northshore University Healthsystem - Evanston Hospital, Northwestern Medicine Mchenry, Northwestern Lake Forest Hospital, Advocate Condell Medical Center and Northwest Community Hospital 1.

When was this NPI record last updated?

The NPPES record for Demetrios Louis was last updated on April 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.