Dr. Dylan J Douglas , MD
Internal Medicine - Pulmonary Disease β’ Lake Forest, IL
1000 N Westmoreland Rd # Level1
Lake Forest, IL 600451658
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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Dr. Dylan Douglas is listed in NPPES under Internal Medicine - Pulmonary Disease.
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NPI assigned on April 18, 2020; this date does not establish years in practice.
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Published CMS data list 188 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Albuterol Sulfate Hfa (Albuterol Sulfate) β 34 prescription fills, including refills.
- Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) β 29 prescription fills, including refills.
- Anoro Ellipta (Umeclidinium Brm/Vilanterol Tr) β 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 11 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine - Pulmonary Disease in Illinois (2024, 409 clinicians with data). Median for this group: 758. Middle half: 188 to 1,587.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 268 in 2021 to 188 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2021β2024.
Practice Location & Contact Primary Location
1000 N Westmoreland Rd # Level1
Lake Forest, IL 600451658
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Chicago, IL. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Internal Medicine - Pulmonary Disease: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
258 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
$54,233 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $240.87 across 3 records.
By nature of payment
- Food and Beverage: $240.87 across 3 records.
Reporting-company totals
- AstraZeneca Pharmaceuticals LP: $230.91 across 2 records.
- Noah Medical Corporation: $9.96 across 1 record.
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).
NPI first issued
2020
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Douglas 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. Douglas 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 Lake Forest and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine - Pulmonary Disease in Illinois (2024, 409 clinicians with data). Median for this group: 758. Middle half: 188 to 1,587.
Too few clinicians listed under Internal Medicine - Pulmonary Disease in Lake Forest have Medicare Part D data for 2024 to compare.
Part D drug cost
A lower Part D drug cost than 70% of clinicians listed under Internal Medicine - Pulmonary Disease in Illinois (2024, 409 clinicians with data). Median for this group: $389,844. Middle half: $53,097 to $971,301.
Too few clinicians listed under Internal Medicine - Pulmonary Disease in Lake Forest have Medicare Part D data for 2024 to compare.
8 active clinicians are listed under Internal Medicine - Pulmonary Disease with a practice address in Lake Forest, IL (624 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 D prescriptions
Medicare Part D prescriptions decreased 30% from 268 in 2021 to 188 in 2024.
- 2021: 268
- 2022: 599
- 2023: 695
- 2024: 188
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30-day fills
30-day fills decreased 53% from 553 in 2021 to 258 in 2024.
- 2021: 553
- 2022: 1,273
- 2023: 1,221
- 2024: 258
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Part D drug cost
Part D drug cost increased 275% from $14,477 in 2021 to $54,233 in 2024.
- 2021: $14,477
- 2022: $35,085
- 2023: $66,358
- 2024: $54,233
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $153.64 in 2023 to $240.87 in 2025.
- 2023: $153.64
- 2024: $352.38
- 2025: $240.87
Sources: 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 Β· 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 β December 31, 2025): fewer than 11 records totaling $240.87.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $120.21 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $110.70 |
| Noah Medical Corporation |
Food and Beverage
Cash or cash equivalent
|
GALAXY | General | $9.96 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Albuterol Sulfate Hfa | Albuterol Sulfate | 34 | 820 | $847.61 | 16 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 29 | 870 | $19,006.27 | β |
| Anoro Ellipta | Umeclidinium Brm/Vilanterol Tr | 22 | 1,020 | $14,862.09 | β |
| Pantoprazole Sodium | Pantoprazole Sodium | 16 | 480 | $33.71 | β |
| Incruse Ellipta | Umeclidinium Bromide | 15 | 660 | $7,085.69 | β |
| Symbicort | Budesonide/Formoterol Fumarate | 14 | 570 | $3,890.65 | β |
| Atorvastatin Calcium | Atorvastatin Calcium | 13 | 888 | $126.92 | β |
| Azithromycin | Azithromycin | 12 | 560 | $167.79 | β |
| Prednisone | Prednisone | 11 | 255 | $25.68 | β |
| Metoprolol Succinate | Metoprolol Succinate | 11 | 306 | $145.04 | β |
| Spiriva Handihaler | Tiotropium Bromide | 11 | 510 | $8,041.84 | β |
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
Self-certified to NPPES: 2026-09-09NUCC Taxonomy Code: 207RP1001X
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
NUCC Taxonomy Code: 207R00000X
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.
NUCC Taxonomy Code: 207RC0200X
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - INTERNAL MEDICINE
I20200715003084
IL
0941624563
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
5841 S Maryland Ave
Chicago, IL 606371443
Phone: 7737021000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Internal Medicine - Pulmonary Disease
Doctor of Medicine (M.D.)
Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1000 N WESTMORELAND RD # LEVEL1, LAKE FOREST, IL 600451658 (Tel: 3126951800)
Additional practice office at 5841 S Maryland Ave, Chicago, IL 606371443
NPI status registered as active in NPPES database
Registered at 5841 S MARYLAND AVE, CHICAGO, IL 606371443 (Tel: 7737021000)
Registered at 180 HARVESTER DR STE 110, BURR RIDGE, IL 605276686 (Tel: 7737021150)
Recorded as DYLAN DOUGLAS, MD
Internal Medicine (license number reported to NPPES: IL 125.075528)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine - Pulmonary Diseases in Lake Forest
- Dr. Mohammed Alzoubaidi, MBBS, MPH
- Dr. Mariam Anis, MD
- Dr. Jason Rho, MD
- Dr. Mateo Tole, MD
- Dr. Mary Zinn-Batina, MD
- Dr. Michael Keller, MD
Mailing Address
180 Harvester Dr Ste 110
Burr Ridge, IL 605276686
Phone: 7737021150