Doctor profile · Federal record
Dr. John Marker, M.D.
Hospitalist Physician (CMS: Hospitalist) · Student in an Organized Health Care Education/Training Program · Internal Medicine Physician · New Orleans, LA
- NPI 1942477583
- Accepts Medicare
- 18 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1430 Tulane Ave Sl 50
New Orleans, LA 70112
(504) 988-7809
fax (504) 988-3971
Credentials & registration
- NPI registered
- May 2008 — 18 yrs on file
- Profile last updated
- April 3, 2017
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 208M00000X — NUCC code
- State licenses (2)
- Louisiana #MD.204045 · Louisiana #MD204045
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1942477583. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
259
Distinct HCPCS
5
Medicare allowed
$30,724
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 121 | 57 | $117 | |
99239 |
Hospital discharge day management, more than 30 minutes | 54 | 53 | $113 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 49 | 28 | $78 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 19 | 19 | $171 | |
99291 |
Critical care, first 30-74 minutes | 16 | 13 | $212 |
In context: peer comparison
Among 28 peers in this city , average services per provider: 72. This provider delivers 3.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
275
Patients
205
Total drug cost
$17,700
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Furosemide | Generic | 31 | 21 | $139 |
| Atorvastatin Calcium | Generic | 29 | 21 | $240 |
| Eliquis (Apixaban) | Brand | 26 | 18 | $15,857 |
| Amlodipine Besylate | Generic | 23 | 16 | $44 |
| Carvedilol | Generic | 21 | 16 | $238 |
| Pantoprazole Sodium | Generic | 20 | 17 | $192 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 17 | 14 | $124 |
| Levofloxacin | Generic | 16 | 16 | $45 |
| Prednisone | Generic | 16 | 16 | $50 |
| Ciprofloxacin Hcl | Generic | 14 | 14 | $72 |
Frequently asked questions
What is Dr. John Marker's medical specialty?
Dr. John Marker practices Hospitalist Physician in New Orleans, LA.
Where does Dr. John Marker practice?
Dr. John Marker practices at 1430 Tulane Ave Sl 50, New Orleans, LA 70112. Office phone: 5049887809.
What is Dr. John Marker's NPI?
Dr. John Marker's National Provider Identifier (NPI) is 1942477583, issued by NPPES.
Does Dr. John Marker accept Medicare assignment?
Yes. Dr. John Marker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Marker commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.