Dr. David J Lang , DO
Anesthesiology • Chicago, IL
836 W Wellington Ave
Chicago, IL 606575147
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 February 14, 2007; this date does not establish years in practice.
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Published CMS data list 26 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Levothyroxine Sodium — 13 prescription fills, including refills.
- Montelukast Sodium — 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 41 in 2014 to 26 in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2014–2021.
Practice Location & Contact Primary Location
836 W Wellington Ave
Chicago, IL 606575147
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
26 standardized 30-day fills in 2021
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
$62 in 2021
The total cost of these prescriptions in 2021, 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, 2021.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $135.13 in 2022
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2022.
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.
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, “Does your provider accept Medicare as full payment?”
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. Lang 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. Lang 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 Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Lang are from 2021.
1,114 active clinicians are listed under Anesthesiology with a practice address in Chicago, IL (2,577 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
1.7% of these 1,114 clinicians have the CMS telehealth indicator.
53.4% of these 1,114 clinicians are listed by CMS as accepting Medicare assignment.
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 37% from 41 in 2014 to 26 in 2021.
- 2014: 41
- 2015: 17
- 2016: 16
- 2020: 41
- 2021: 26
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30-day fills
30-day fills decreased 37% from 41 in 2014 to 26 in 2021.
- 2014: 41
- 2015: 17
- 2016: 16
- 2020: 41
- 2021: 26
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Part D drug cost
Part D drug cost went from $263 in 2014 to $62 in 2021.
- 2014: $263
- 2015: $165
- 2016: $147
- 2020: $246
- 2021: $62
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2022 only.
Sources: CMS Medicare Part D Prescribers (2021), CMS Open Payments (2022), 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 2022 (payments made January 1 – December 31, 2022): fewer than 11 records totaling $135.13.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| GE HEALTHCARE |
Food and Beverage
Cash or cash equivalent
|
— | General | $135.13 |
Source: CMS Open Payments, program year 2022, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 13 | 390 | $31.99 | — |
| Montelukast Sodium | Montelukast Sodium | 13 | 390 | $29.65 | — |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY
I20051013000456
IL
3476578949
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Internal Medicine
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Surgery
Doctor of Medicine (M.D.)
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated February 14, 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 Anesthesiology Specialists in Chicago
- Dr. Alexander Deleon, MD
- Dr. Constanta Alexandreanu, MD
- Brian Myers
- Jordan Chen
- Dr. Olufunmilayo Ayanbule, MD
- Dr. Gassan Mohama, MD
Mailing Address
925 Sherwood Dr
Lake Bluff, IL 600442203