Doctor profile · Federal record
Dr. Johnathan Fagg, MD
Pulmonary Disease Physician (CMS: Internal Medicine) · Pulmonary Disease Physician · Saint Louis, MO
- NPI 1811427636
- Accepts Medicare
- 9 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
621 S New Ballas RD Ste 228A
Saint Louis, MO 631418256
(314) 251-4968
fax (217) 545-4734 - Mailing address
-
Po Box 19627
Springfield, IL 627949627
Credentials & registration
- NPI registered
- June 2017 — 9 yrs on file
- Profile last updated
- October 5, 2023
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207RP1001X — NUCC code
- State licenses (2)
- Missouri #2023032929 · Illinois #036153001
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1811427636. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
167
Distinct HCPCS
6
Medicare allowed
$15,316
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 57 | 21 | $77 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $162 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 23 | 22 | $169 | |
94729 |
Test to examine how well the lungs exchange gases | 16 | 16 | $8 | |
94010 |
Test to measure expiratory airflow and volume | 15 | 15 | $7 | |
94726 |
Test to determine lung volumes using sensors | 15 | 15 | $11 |
In context: peer comparison
Among 40 peers in this city , average services per provider: 94. This provider delivers 1.8× the peer median.Open Payments
Industry payments received
All-time total
$345
Transactions
6
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 1 | $109.85 | |
| United Therapeutics Corporation | 1 | $97.55 | |
| Merck Sharp & Dohme LLC | 1 | $85.81 | |
| ANI Pharmaceuticals, Inc. | 2 | $31.32 | |
| Bayer Healthcare Pharmaceuticals Inc. | 1 | $20.14 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
36
Patients
28
Total drug cost
$483
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 23 | 17 | $451 |
| Prednisone | Generic | 13 | 11 | $32 |
Hospital affiliations
Frequently asked questions
What is Dr. Johnathan Fagg's medical specialty?
Dr. Johnathan Fagg practices Pulmonary Disease Physician in Saint Louis, MO.
Where does Dr. Johnathan Fagg practice?
Dr. Johnathan Fagg practices at 621 S New Ballas RD Ste 228A, Saint Louis, MO 631418256. Office phone: 3142514968.
What is Dr. Johnathan Fagg's NPI?
Dr. Johnathan Fagg's National Provider Identifier (NPI) is 1811427636, issued by NPPES.
Does Dr. Johnathan Fagg accept Medicare assignment?
Yes. Dr. Johnathan Fagg accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Johnathan Fagg commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); New patient office or other outpatient visit (HCPCS 99204); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.