Doctor profile · Federal record
Dr. Zachary Lonjers, MD
Pulmonary Disease Physician (CMS: Pulmonary Disease) · Internal Medicine Physician · Critical Care Medicine (Internal Medicine) Physician · Saint Louis, MO
- NPI 1104205491
- Accepts Medicare
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1 Barnes Jewish Hospital Plz, Div Im Pulmonary and Critical Care Medicine
Saint Louis, MO 631101003
(314) 454-8917
fax (314) 454-7524 - Mailing address
-
Po Box 7412011
Chicago, IL 606742011
Credentials & registration
- NPI registered
- May 2015 — 11 yrs on file
- Profile last updated
- April 17, 2025
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207RP1001X — NUCC code
- State license (1)
- Missouri #2022016251
- Medicaid
- MO #200087170
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104205491. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
140
Distinct HCPCS
4
Medicare allowed
$22,828
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 68 | 22 | $208 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 28 | 28 | $157 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 23 | 15 | $77 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 21 | 19 | $120 |
In context: peer comparison
Among 40 peers in Saint Louis Pulmonary Disease Physician, average services per provider: 94. This provider delivers 1.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
65
Patients
24
Total drug cost
$20,536
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 27 | 13 | $643 |
| Stiolto Respimat (Tiotropium Br/Olodaterol Hcl) | Brand | 13 | 0 | $6,732 |
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 13 | 0 | $13,125 |
| Prednisone | Generic | 12 | 11 | $36 |
Hospital affiliations
Frequently asked questions
What is Dr. Zachary Lonjers's medical specialty?
Dr. Zachary Lonjers practices Pulmonary Disease Physician in Saint Louis, MO.
Where does Dr. Zachary Lonjers practice?
Dr. Zachary Lonjers practices at 1 Barnes Jewish Hospital Plz, Saint Louis, MO 631101003. Office phone: 3144548917.
What is Dr. Zachary Lonjers's NPI?
Dr. Zachary Lonjers's National Provider Identifier (NPI) is 1104205491, issued by NPPES.
Does Dr. Zachary Lonjers accept Medicare assignment?
Yes. Dr. Zachary Lonjers accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Zachary Lonjers commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); New patient office or other outpatient visit (HCPCS 99204); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.