Medicare Enrolled
Dr. Demetrios Louis, M.D.
Anesthesiology · Arlington Heights, IL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Louis from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Louis
Dr. Demetrios Louis is an anesthesiology specialist in Arlington Heights, IL, with 18 years of NPI registration. Based on federal Medicare data, Dr. Louis performed 9,324 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Louis received a total of $8,351 from 68 pharmaceutical and/or device companies across 395 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Louis is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 18 years of NPI registration
▲ Top 1% volume in IL
$8,351 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗9,324
Medicare services
Top 1% in IL for anesthesiology
Not available
Unique patients (not deduplicated)
$29
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Contrast dye for imaging, lower concentration | 2,505 | $0 | $8 |
| Joint lubricant injection (GenVisc) An injection of hyaluronan or its derivative into a joint space to provide lubrication and cushioning. |
2,500 | $6 | $24 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
1,030 | $0 | $8 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
780 | $97 | $315 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
405 | $1 | $25 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
320 | $0 | $8 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
268 | $69 | $240 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
149 | $128 | $530 |
| Methylprednisolone acetate injection, 80 mg An injection of 80 mg of methylprednisolone acetate, a corticosteroid medication. |
116 | $9 | $51 |
| Midazolam injection, per 1 mg Administration of midazolam hydrochloride, a sedative medication, measured in 1 mg increments. |
112 | $0 | $8 |
| Sacral spine nerve root injection with imaging guidance An injection of anesthetic and/or steroid medication into a sacral spine nerve root. The procedure uses imaging guidance to ensure accurate placement. |
92 | $233 | $1,434 |
| Ultrasound-guided large joint aspiration or injection This procedure uses ultrasound imaging to guide the removal of fluid from or the injection of medication into a large joint. |
91 | $99 | $735 |
| Spine facet joint injection with imaging guidance, single level An injection is administered into a single facet joint of the lower or sacral spine while using imaging guidance to ensure accurate placement. |
80 | $202 | $1,358 |
| Injection into lower spine canal with imaging guidance A procedure where a substance is injected into the lower part of the spinal canal. The injection is performed using imaging guidance to ensure accurate placement. |
79 | $216 | $1,295 |
| Facet joint injection, second level, with imaging guidance An injection into a lower or sacral spine facet joint using imaging guidance for the second level treated. |
76 | $107 | $1,380 |
| Drug test with direct observation A drug screening test performed under direct observation to ensure the sample is provided correctly. This method is used to verify the integrity of the specimen collection process. |
55 | $11 | $109 |
| Additional sacral spine nerve root injection with imaging An injection of anesthetic and/or steroid medication into an additional sacral spine nerve root level, guided by imaging. |
51 | $92 | $925 |
| Injection, propofol, 10 mg | 51 | $0 | $67 |
| Fluoroscopic guidance for needle placement Use of real-time X-ray imaging to guide the precise placement of a needle during a medical procedure. |
49 | $92 | $330 |
| Cefazolin sodium injection, 500 mg An injection of 500 mg of cefazolin sodium, an antibiotic medication, administered into the body. |
49 | $1 | $10 |
| Blood glucose level test A test that measures the amount of sugar in your blood. |
47 | $4 | $65 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
41 | $57 | $415 |
| Injection of anesthetic or steroid into sacroiliac joint with imaging guidance This procedure involves injecting an anesthetic or steroid medication into the joint connecting the lower spine and hip bone. Imaging guidance is used to ensure accurate placement of the injection. |
41 | $145 | $878 |
| Facet joint nerve destruction, single joint A procedure to destroy nerves in a single lower or sacral spinal facet joint using imaging guidance to target pain signals. |
36 | $361 | $3,642 |
| Facet joint nerve destruction, additional joint This procedure uses imaging guidance to destroy nerves in an additional lower or sacral spinal facet joint. |
35 | $178 | $3,626 |
| Lactated Ringer's infusion, up to 1000 cc Intravenous administration of Lactated Ringer's solution, a fluid used to replace fluids and electrolytes, in amounts up to 1000 cubic centimeters. |
34 | $2 | $47 |
| Spinal injection with imaging guidance A procedure where medication is injected into the middle or upper part of the spinal canal. Imaging technology is used to guide the needle to the correct location. |
32 | $212 | $1,315 |
| Anesthesia for spine injection or aspiration with imaging This code covers the administration of anesthesia for injection, drainage, or aspiration procedures on the lower back spine or spinal cord. The procedure is performed through the skin using imaging guidance. |
24 | $97 | $492 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
23 | $9 | $350 |
| Spine facet joint injection with imaging guidance, single level An injection is administered into a single facet joint of the upper or middle spine while using imaging guidance to ensure accurate placement. |
22 | $199 | $1,472 |
| Facet joint injection, second level, with imaging An injection into a second spinal facet joint in the upper or middle spine, guided by imaging to ensure accurate placement. |
22 | $105 | $1,472 |
| Anesthesia for spine nerve destruction procedure Administration of anesthesia during a procedure to destroy nerves in the lower back or spinal cord, guided by imaging. |
19 | $132 | $1,566 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
19 | $139 | $640 |
| Ultrasound guidance for needle placement Use of ultrasound imaging to guide the precise placement of a needle during a medical procedure. |
17 | $49 | $495 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
15 | $131 | $425 |
| Anesthesia for spinal nerve modulation or bone repair Anesthesia provided during a minimally invasive procedure to modulate spinal nerves or repair lower back bone structures using imaging guidance. |
14 | $171 | $2,218 |
| Trigger point injection, 1-2 muscles A procedure involving the injection of medication into one or two specific muscles to treat trigger points. |
14 | $42 | $325 |
| New patient office visit, complex (60-74 min) | 11 | $152 | $685 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
0.4% high complexity
83.3% medium
16.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$8,351
Total received (2018-2024)
Avg $1,193/year across 7 years
Top 4% in IL for anesthesiology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
68
Companies
395
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,140
2023
$994
2022
$548
2021
$1,176
2020
$950
2019
$1,791
2018
$1,752
Payments by company (2024)
Abbott Laboratories
$263
Boston Scientific Corporation
$205
Collegium Pharmaceutical, Inc.
$149
ABBVIE INC.
$135
BIOTRONIK NRO, Inc.
$53
Medtronic, Inc.
$49
SI-BONE, INC.
$44
Curonix LLC
$40
SCILEX PHARMACEUTICALS INC.
$40
Fidia Pharma USA Inc.
$37
Spinal Simplicity, LLC
$24
Pacira Pharmaceuticals Incorporated
$21
Azurity Pharmaceuticals, Inc.
$20
IBSA Pharma Inc.
$19
VERTEX PHARMACEUTICALS INCORPORATED
$19
SPR Therapeutics, Inc
$10
Saluda Medical Americas, Inc.
$10
Top 3 companies account for 54.1% of 2024 payments
All-time payments by company (2018-2024) ›
Boston Scientific Corporation
$1,390
Abbott Laboratories
$846
Collegium Pharmaceutical, Inc.
$737
BOSTON SCIENTIFIC CORPORATION
$352
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$326
Medtronic, Inc.
$288
Relievant Medsystems, Inc.
$259
ARBOR PHARMACEUTICALS, INC.
$217
BioDelivery Sciences International, Inc.
$206
Stimwave Technologies Incorporated
$191
Flexion Therapeutics, Inc.
$162
Nuvectra Corporation
$159
Fidia Pharma USA Inc.
$156
ABBVIE INC.
$154
DePuy Synthes Sales Inc.
$138
Allergan, Inc.
$130
Egalet US Inc
$123
PFIZER INC.
$122
Nevro Corp.
$119
SI-BONE, Inc.
$111
Amgen Inc.
$110
FIDIA PHARMA USA INC.
$108
Horizon Therapeutics plc
$107
BIOTRONIK NRO, Inc.
$86
Orthogenrx Inc.
$81
AstraZeneca Pharmaceuticals LP
$79
BIODELIVERY SCIENCES INTERNATIONAL, INC.
$79
Daiichi Sankyo Inc.
$74
SPR Therapeutics, Inc
$68
SI-BONE, INC.
$68
Sentynl Therapeutics, Inc.
$66
Pacira Pharmaceuticals Incorporated
$65
Novartis Pharmaceuticals Corporation
$63
Stryker Corporation
$61
Assertio Therapeutics, Inc.
$60
Avanos Medical
$60
Bioventus LLC
$59
Almatica Pharma LLC
$52
Arbor Pharmaceuticals, Inc.
$50
ASSERTIO THERAPEUTICS, Inc.
$46
Saluda Medical Americas, Inc.
$44
GRT US Holding, Inc.
$41
Curonix LLC
$40
SCILEX PHARMACEUTICALS INC.
$40
Medtronic USA, Inc.
$40
Purdue Pharma L.P.
$39
Horizon Pharma plc
$38
IBSA Pharma Inc.
$38
Allergan Inc.
$36
Radius Health, Inc.
$30
Kowa Pharmaceuticals America, Inc.
$29
Shionogi Inc
$28
Spinal Simplicity, LLC
$24
PAINTEQ LLC
$21
Scilex Pharmaceuticals Inc.
$21
Azurity Pharmaceuticals, Inc.
$20
Trevena, Inc.
$20
Vertical Pharmaceuticals, LLC
$19
VERTEX PHARMACEUTICALS INCORPORATED
$19
Vertiflex, Inc.
$18
Vertos Medical, Inc.
$17
Pacira Therapeutics, Inc.
$17
ACACIA PHARMA INC
$15
Lilly USA, LLC
$15
US WorldMeds, LLC
$14
Organogenesis Inc.
$13
Teva Pharmaceuticals USA, Inc.
$13
Zyla Life Sciences, Inc.
$11
Top 3 companies account for 35.6% of all-time payments
Associated products mentioned in payments ›
AIMOVIG · AJOVY · ARYMO ER · Aimovig · Algovita · Axium INS DRG IPG · BELBUCA · BIOTRONIK · BOTOX · BOTOX COSMETIC · BOTOX THERAPEUTIC · BUNAVAIL 2.1 mg 30-count box · BYFAVO · Belbuca · CONFIDENCE · COOLIEF* COOLED RADIOFREQUENCY · Confidense · DUEXIS · Durolane · ELYXYB - celecoxib · EMGALITY · ETERNA · Edarbi · Evoke · Evoke SCS · GELSYN 3 · GELSYN-3 · GENERAL PAIN MANAGEMENT · GENERAL THERAPIES · GENERAL - PAIN MANAGEMENT · GENERAL PAIN MANAGEMENT · GENVISC 850 SODIUM HYALURONATE · GRALISE · GenVisc 850 · General - Pain Management · Gralise · HA MINUTEMAN G3-R · HORIZANT · HYMOVIS · Horizant · Hyalgan · Hyalogyn · Hymovis · IFUSE IMPLANT · INTELLIS · INTELLIS ADAPTIVESTIM · IONICRF · IVS - VERTEBROPLASTY PRODUCTS · Intracept · Iovera · KYPHON Balloon Kyphoplasty · LEVORPHANOL TARTRATE · LICART · LORZONE · LYRICA · Levorphanol Tartrate · MONOVISC · MOVANTIK · MYOBLOC · Morphabond ER · Movantik · NAPRELAN · Nucynta · Nucynta ER · OLINVYK · ORTHOVISC · OXYCONTIN · Omnia · PAINTEQ · PENNSAID · PNS FREEDOM-4A PERMANENT NEUROSTIMULATOR RECEIVER KIT CHANNEL A · PROCLAIM · Proclaim Family of SCS IPGs · Proclaim IPG · Prospera · Puraply · Qutenza · RAYOS · RELISTOR · RELISTOR ORAL · SEGLENTIS · SPECTRA WAVEWRITER · SPINEJACK · SPRINT PNS System · SPRIX · SYMPROIC · Senza Spinal Cord Stimulation System · StimQ Receiver Stimulator Kit Channel A US w/Receiver · Superion ISS · Symproic · Tirosint · TriVisc sodium hyaluronate · UBRELVY · WAVEWRITER ALPHA · WaveWriter Alpha Prime 16 · XTAMPZA · XTAMPZAER · Xtampza ER · ZTLido · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH · Zilretta · Zipsor · iFuse Implant · mild Device Kit
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Anesthesiologists in nearby ZIP areas
1,566
County median income
$81,797
Nearest hospital to ZIP centroid (approximate)
NORTHWEST COMMUNITY HOSPITAL 1
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Louis is a mixed practice specialist, with above-average Medicare volume (top 1% in IL), with 18 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Louis experienced with contrast dye for imaging, lower concentration?
Based on Medicare claims data, Dr. Louis performed 2,505 contrast dye for imaging, lower concentration services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Louis receive payments from pharmaceutical companies?
Yes. Dr. Louis received a total of $8,351 from 68 companies across 395 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Louis's costs compare to other anesthesiologists in Arlington Heights?
Dr. Louis's average Medicare payment per service is $29. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Louis) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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