Dr. David Selwyn Sager , MD
Specialist • Des Plaines, IL
150 N River Rd
Des Plaines, IL 600161272
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on March 20, 2007; this date does not establish years in practice.
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Published CMS data list 169,616 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J0717 — Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered): 94,004 service units.
- J3262 — Injection, tocilizumab, 1 mg: 38,600 service units.
- J1745 — Injection, infliximab, excludes biosimilar, 10 mg: 12,360 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
See all 56 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 3,641 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Prednisone — 667 prescription fills, including refills.
- Celecoxib — 365 prescription fills, including refills.
- Methotrexate (Methotrexate Sodium) — 333 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 47 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Specialist in Illinois (2024, 124 clinicians with data). Median for this group: 845. Middle half: 325 to 2,816.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 34,104 in 2020 to 169,616 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
150 N River Rd
Des Plaines, IL 600161272
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Rheumatic Disease Center Physicians Sc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Illinois Medical College
1973
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
446 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $1,690,486 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $1,338,077 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
7,437 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,126,319 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $239.23 across 4 records.
By nature of payment
- Food and Beverage: $239.23 across 4 records.
Reporting-company totals
- ABBVIE INC.: $239.23 across 4 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
53 years (graduated 1973)
CMS Doctors and Clinicians data list 1973 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Sager has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Sager as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Des Plaines and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Specialist in Illinois (2024, 124 clinicians with data). Median for this group: 845. Middle half: 325 to 2,816.
Too few clinicians listed under Specialist in Des Plaines have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Specialist in Illinois (2024, 124 clinicians with data). Median for this group: $82,929. Middle half: $28,554 to $241,062.
Too few clinicians listed under Specialist in Des Plaines have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Specialist in Illinois (2024, 124 clinicians with data). Median for this group: $60,992. Middle half: $20,643 to $182,426.
Too few clinicians listed under Specialist in Des Plaines have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Specialist in Illinois (2024, 127 clinicians with data). Median for this group: 468. Middle half: 69 to 1,831.
Too few clinicians listed under Specialist in Des Plaines have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Specialist in Illinois (2024, 127 clinicians with data). Median for this group: $22,661. Middle half: $2,200 to $193,901.
Too few clinicians listed under Specialist in Des Plaines have Medicare Part D data for 2024 to compare.
7 active clinicians are listed under Specialist with a practice address in Des Plaines, IL (1,157 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 397% from 34,104 in 2020 to 169,616 in 2024.
- 2020: 34,104
- 2021: 82,134
- 2022: 115,063
- 2023: 132,499
- 2024: 169,616
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Medicare-allowed amount
Medicare-allowed amount increased 29% from $1,312,218 in 2020 to $1,690,486 in 2024.
- 2020: $1,312,218
- 2021: $1,464,354
- 2022: $1,584,512
- 2023: $1,713,156
- 2024: $1,690,486
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Paid by Medicare
Paid by Medicare increased 28% from $1,047,280 in 2020 to $1,338,077 in 2024.
- 2020: $1,047,280
- 2021: $1,173,215
- 2022: $1,261,605
- 2023: $1,364,417
- 2024: $1,338,077
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 10% from 3,309 in 2020 to 3,641 in 2024.
- 2020: 3,309
- 2021: 3,255
- 2022: 3,401
- 2023: 3,374
- 2024: 3,641
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30-day fills
30-day fills increased 11% from 6,730 in 2020 to 7,437 in 2024.
- 2020: 6,730
- 2021: 6,542
- 2022: 6,693
- 2023: 6,798
- 2024: 7,437
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Part D drug cost
Part D drug cost increased 46% from $770,600 in 2020 to $1,126,319 in 2024.
- 2020: $770,600
- 2021: $1,027,442
- 2022: $1,171,227
- 2023: $934,771
- 2024: $1,126,319
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $32.41 in 2022 to $239.23 in 2025.
- 2022: $32.41
- 2023: $179.25
- 2024: $23.00
- 2025: $239.23
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $239.23.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $116.73 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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RINVOQ | General | $102.15 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $11.81 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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RINVOQ | General | $8.54 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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J0717
Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)
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94,004 | 25 | $7.25 | $4.55 |
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J3262
Injection, tocilizumab, 1 mg
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38,600 | 11 | $9.00 | $5.91 |
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J1745
Injection, infliximab, excludes biosimilar, 10 mg
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12,360 | 37 | $50.00 | $31.43 |
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J0897
Injection, denosumab, 1 mg
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8,751 | 86 | $30.00 | $25.58 |
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J1010
Injection, methylprednisolone acetate, 1 mg
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1,160 | 19 | $0.91 | $0.13 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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1,083 | 423 | $175.02 | $123.81 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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868 | 382 | $35.00 | $15.73 |
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J7050
Infusion, normal saline solution, 250 cc
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844 | 69 | $5.00 | $0.65 |
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36415
Insertion of needle into vein for collection of blood sample
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832 | 391 | $3.02 | $2.96 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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781 | 381 | $10.40 | $7.57 |
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85651
Red blood cell sedimentation rate, to detect inflammation, non-automated
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779 | 385 | $4.75 | $4.17 |
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86140
Measurement c-reactive protein for detection of infection or inflammation
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774 | 383 | $7.34 | $5.07 |
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96372
Injection of drug or substance under skin or into muscle
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755 | 129 | $65.04 | $13.65 |
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83735
Magnesium level
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747 | 378 | $9.01 | $6.53 |
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80053
Blood test, comprehensive group of blood chemicals
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746 | 378 | $14.14 | $10.29 |
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82610
Cystatin c (enzyme inhibitor) level
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739 | 376 | $19.00 | $18.05 |
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82306
Vitamin d-3 level
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713 | 372 | $41.67 | $28.97 |
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96415
Administration of chemotherapy into vein, each additional hour
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612 | 57 | $150.00 | $26.13 |
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J2919
Injection, methylprednisolone sodium succinate, 5 mg
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610 | 12 | $0.88 | $0.28 |
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86235
Measurement of antibody for assessment of autoimmune disorder, any method
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605 | 98 | $27.00 | $17.43 |
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99490
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
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391 | 205 | $100.00 | $60.02 |
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G2252
Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic
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347 | 159 | $50.00 | $25.18 |
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96413
Administration of chemotherapy into vein, 1 hour or less
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346 | 57 | $325.00 | $121.99 |
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99439
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
|
210 | 152 | $100.00 | $45.82 |
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99491
Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month
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149 | 107 | $100.00 | $81.16 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Prednisone | Prednisone | 667 | 43,044 | $7,788.51 | 197 |
| Celecoxib | Celecoxib | 365 | 25,156 | $9,799.65 | 103 |
| Methotrexate | Methotrexate Sodium | 333 | 26,497 | $12,553.65 | 96 |
| Tramadol Hcl | Tramadol Hcl | 252 | 7,202 | $2,382.85 | 60 |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 243 | 18,220 | $10,917.72 | 72 |
| Methylprednisolone | Methylprednisolone | 190 | 1,942 | $1,460.85 | 88 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 175 | 4,977 | $5,357.34 | 39 |
| Meloxicam | Meloxicam | 163 | 10,312 | $1,085.48 | 52 |
| Gabapentin | Gabapentin | 153 | 11,385 | $2,369.85 | 43 |
| Allopurinol | Allopurinol | 92 | 7,800 | $1,483.01 | 26 |
| Omeprazole | Omeprazole | 83 | 7,080 | $1,560.10 | 26 |
| Leflunomide | Leflunomide | 78 | 6,192 | $4,199.32 | 23 |
| Alprazolam | Alprazolam | 47 | 1,478 | $333.59 | — |
| Etodolac | Etodolac | 46 | 2,445 | $2,116.81 | 17 |
| Enbrel Sureclick | Etanercept | 45 | 1,848 | $505,418.58 | — |
| Amitriptyline Hcl | Amitriptyline Hcl | 42 | 3,420 | $452.36 | 11 |
| Diclofenac Sodium | Diclofenac Sodium | 40 | 2,070 | $408.96 | 12 |
| Duloxetine Hcl | Duloxetine Hcl | 40 | 3,183 | $746.71 | 12 |
| Naproxen | Naproxen | 37 | 1,740 | $484.00 | 16 |
| Folic Acid | Folic Acid | 37 | 3,011 | $429.87 | 11 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 36 | 1,615 | $320.68 | 14 |
| Atorvastatin Calcium | Atorvastatin Calcium | 32 | 2,910 | $370.00 | — |
| Diazepam | Diazepam | 31 | 1,110 | $140.90 | — |
| Trazodone Hcl | Trazodone Hcl | 31 | 1,170 | $222.06 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 27 | 1,770 | $407.37 | — |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - RHEUMATOLOGY
I20120215000750
IL
0648438937
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Rheumatic Disease Center Physicians Sc
150 N River Rd, Des Plaines, IL 600161272
Phone: 8478000998
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Internal Medicine - Rheumatology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated March 20, 2007.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Specialists in Des Plaines
Healthcare providers in Des PlainesMailing Address
150 N River Rd
Des Plaines, IL 600161272
Phone: 8472988470