Doctor profile · Federal record
Dr. Mark Donowitz, M.D.
Gastroenterology Physician · Baltimore, MD
- NPI 1306893342
- MIPS 74.4 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
600 N Wolfe St
Baltimore, MD 212870005
(410) 955-4166 - Mailing address
-
Po Box 64264
Baltimore, MD 212644264
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- February 6, 2013
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Maryland #D02767
- Medicaid
- MD #207641100
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1306893342. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
48
Distinct HCPCS
3
Medicare allowed
$3,891
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 16 | 12 | $70 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 16 | 12 | $70 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 16 | 12 | $103 |
In context: peer comparison
Among 49 peers in Baltimore Gastroenterology Physician, average services per provider: 49. This provider delivers 1.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
85
Patients
0
Total drug cost
$402,299
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Famotidine | Generic | 35 | 0 | $501 |
| Loperamide (Loperamide Hcl) | Brand | 14 | 0 | $2,106 |
| Stelara (Ustekinumab) | Brand | 13 | 0 | $399,260 |
| Temazepam | Generic | 12 | 0 | $44 |
| Lactated Ringers (Ringer's Solution,Lactated) | Brand | 11 | 0 | $388 |
Frequently asked questions
What is Dr. Mark Donowitz's medical specialty?
Dr. Mark Donowitz practices Gastroenterology Physician in Baltimore, MD.
Where does Dr. Mark Donowitz practice?
Dr. Mark Donowitz practices at 600 N Wolfe St, Baltimore, MD 212870005. Office phone: 4109554166.
What is Dr. Mark Donowitz's NPI?
Dr. Mark Donowitz's National Provider Identifier (NPI) is 1306893342, issued by NPPES.
What procedures does Dr. Mark Donowitz commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.