Mark Liu, M.D.
Pulmonary Disease Physician · Baltimore, MD
Mark Liu, M.D. is a pulmonary disease physician with a practice address in Baltimore, Maryland, and NPI 1790721488, issued on Jun 21, 2006. Check the license (Maryland D21394, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mark Liu
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- D21394 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5501 Hopkins Bayview Cir, Baltimore, MD 21224
- Phone
- (410) 550-5864
- Enumerated
- Jun 21, 2006
- Record last updated
- Jan 27, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 311561500 MD
- Medicare enrollment
- Enrolled (PECOS I20040317001511); may accept Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 1975
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 342 in Maryland → Look up another NPI →
Also registered at 5501 Hopkins Bayview Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michele Bellantoni, M.D.Geriatric Medicine (Internal Medicine) Physician1275598427
- Richard Bennett, M.D.Internal Medicine Physician1184680589
- Laura Cappelli, M.D.Rheumatology Physician1225273840
Verify Mark Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D21394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
240 Medicare Part D claims for 38 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of claims.
Most prescribed
- Prednisone38 claims
- Azithromycin18 claims
- Breo Ellipta16 claims
- Budesonide-Formoterol Fumarate16 claims
- Pantoprazole Sodium15 claims
- Symbicort15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Liu among 342 pulmonary disease physician records in Maryland
Mark Liu, M.D. is one of 342 pulmonary disease physician records with a practice address in Maryland. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 42% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1975 · median 2000 among the 225 with a school on file
- Record last updated2010 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Maryland
There are 342 pulmonary disease physician records in Maryland.
All 342 in Maryland → Every provider in Baltimore → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Hassan Chami, M.D.Baltimore, MD 212241497869382
- Edward Chen, M.D.Baltimore, MD 212241508816919
- Mahendra Damarla, M.D.Baltimore, MD 212241720137771
- Sonye Danoff, M.D.Baltimore, MD 212241720023534
- Michael Drummond, M.D.Baltimore, MD 212241689631541
- Christopher Earley, M.D.Baltimore, MD 212241003857384
- Bo Kim, M.D.Baltimore, MD 212241649294695
- Audrey Liu, M.D.Baltimore, MD 212241750324935
Common questions
What is Mark Liu, M.D.'s NPI number?
Mark Liu, M.D.'s National Provider Identifier (NPI) is 1790721488, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Liu, M.D. located?
The NPPES record lists a practice address at 5501 Hopkins Bayview Cir, Baltimore, MD, 21224. Phone: (410) 550-5864. Providers update this record themselves, so call before visiting.
How can I verify Mark Liu, M.D.'s license?
NPPES lists Maryland license number D21394, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Liu, M.D. prescribe under Medicare Part D?
In 2024, Mark Liu, M.D. had 240 Medicare Part D claims for 38 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Mark Liu, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.