Doctor profile · Federal record
Dr. Gregory Nizialek
Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Baltimore, MD
- NPI 1124386552
- Accepts Medicare
- MIPS 79.1 / 100 · 2023
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
9000 Franklin Square Dr
Baltimore, MD 212373901
(443) 777-7000 - Additional location
-
2500 Metrohealth Dr
Cleveland, OH 441091900
(216) 778-4486 - Additional location
-
3001 S Hanover St
Baltimore, MD 212251233
(410) 350-3200
Credentials & registration
- NPI registered
- April 2012 — 14 yrs on file
- Profile last updated
- July 3, 2019
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maryland #D0087449
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1124386552. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
180
Distinct HCPCS
4
Medicare allowed
$23,285
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 115 | 41 | $124 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 30 | 30 | $181 | |
99239 |
Hospital discharge day management, more than 30 minutes | 19 | 19 | $120 | |
99238 |
Hospital discharge day management, 30 minutes or less | 16 | 16 | $84 |
In context: peer comparison
Among 363 peers in Baltimore Internal Medicine Physician, average services per provider: 105. This provider delivers 1.7× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Gregory Nizialek's medical specialty?
Dr. Gregory Nizialek practices Internal Medicine Physician in Baltimore, MD.
Where does Dr. Gregory Nizialek practice?
Dr. Gregory Nizialek practices at 9000 Franklin Square Dr, Baltimore, MD 212373901. Office phone: 4437777000.
What is Dr. Gregory Nizialek's NPI?
Dr. Gregory Nizialek's National Provider Identifier (NPI) is 1124386552, issued by NPPES.
Does Dr. Gregory Nizialek accept Medicare assignment?
Yes. Dr. Gregory Nizialek accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gregory Nizialek commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.