Doctor profile · Federal record
Dr. Mark Liu, M.D.
Pulmonary Disease Physician (CMS: Pulmonary Disease) · Clinical & Laboratory Immunology (Internal Medicine) Physician · Baltimore, MD
- NPI 1790721488
- MIPS 74.4 / 100 · 2023
- 51 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5501 Hopkins Bayview Cir
Baltimore, MD 212246821
(410) 550-5864 - Mailing address
-
Po Box 64264
Baltimore, MD 212644264
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- January 27, 2010
- Year of graduation
- 1975 — 51 yrs since
- Specialty taxonomy
- 207RP1001X — NUCC code
- State license (1)
- Maryland #D21394
- Medicaid
- MD #311561500
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1790721488. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
361
Distinct HCPCS
7
Medicare allowed
$44,257
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 77 | 39 | $89 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 77 | 62 | $138 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 70 | 48 | $152 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 62 | 35 | $80 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 40 | 35 | $99 | |
99291 |
Critical care, first 30-74 minutes | 18 | 11 | $227 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 17 | 17 | $184 |
In context: peer comparison
Among 44 peers in Baltimore Pulmonary Disease Physician, average services per provider: 71. This provider delivers 5.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
208
Patients
31
Total drug cost
$107,128
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 39 | 20 | $369 |
| Symbicort (Budesonide/Formoterol Fumarate) | Brand | 38 | 0 | $25,905 |
| Azithromycin | Generic | 32 | 11 | $715 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 23 | 0 | $1,805 |
| Nucala (Mepolizumab) | Brand | 17 | 0 | $61,480 |
| Advair Diskus (Fluticasone Propion/Salmeterol) | Brand | 16 | 0 | $8,928 |
| Incruse Ellipta (Umeclidinium Bromide) | Brand | 16 | 0 | $6,988 |
| Pantoprazole Sodium | Generic | 14 | 0 | $136 |
| Ventolin Hfa (Albuterol Sulfate) | Brand | 13 | 0 | $803 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Liu's medical specialty?
Dr. Mark Liu practices Pulmonary Disease Physician in Baltimore, MD.
Where does Dr. Mark Liu practice?
Dr. Mark Liu practices at 5501 Hopkins Bayview Cir, Baltimore, MD 212246821. Office phone: 4105505864.
What is Dr. Mark Liu's NPI?
Dr. Mark Liu's National Provider Identifier (NPI) is 1790721488, issued by NPPES.
Does Dr. Mark Liu accept Medicare assignment?
Dr. Mark Liu does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Mark Liu commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low level of medical decision making (HCPCS 99221); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.