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MARK LIU M.D.
NPI 1790721488
Internal Medicine - Pulmonary Disease in Baltimore, MD

Active since June 21, 2006PECOS Enrolled
74.39/100
CMS Quality Rating
5501 HOPKINS BAYVIEW CIR, BALTIMORE, MD 21224(410) 550-5864 Get Directions Write a Review

NPPES record last updated: January 27, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark Liu M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK LIU M.D. (NPI 1790721488) is an individual pulmonary disease provider in Baltimore, Maryland, licensed in Maryland (D21394) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of University Of Maryland School Of Medicine (1975).

NPPES Registry Identity

NPI1790721488
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameMARK LIUCredential: M.D.
Location Address5501 HOPKINS BAYVIEW CIRBaltimore, MD 21224-6821
Mailing AddressPo Box 64264Baltimore, MD 21264-4264
Phone(410) 550-5864
Sole ProprietorNo
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 1975
Enumeration DateJune 21, 2006
Last NPPES UpdateJanuary 27, 2010
✔ NPI 1790721488 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in MD · D21394
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal Medicine · Clinical & Laboratory ImmunologyTaxonomy 207RI0001X · License D21394 (MD)
5501 HOPKINS BAYVIEW CIR, Baltimore, MD 21224
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Other Identifiers 4

Medicare PIN145784ZBR2MD
Medicaid311561500MD
Medicare UPIND76267MD
Medicare PINKR66MI13MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Liu M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4284524828
PECOS Enrollment IDI20040317001511
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
156 services82 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
81 services50 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
67 services30 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
39 services37 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
25 services25 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
18 services11 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210009
Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County
Emergency services Birthing friendly

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210029
Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

74.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.71
Promoting Interoperability97
Improvement Activities40
Cost52.43

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Stationary oxygen contents, liquid, 1 month's supply = 1 unit E0442
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$28.93 avg. paid by Medicare
Portable oxygen contents, liquid, 1 month's supply = 1 unit E0444
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$37.78 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier15 claims15 services$71.71 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier14 claims14 services$36.40 avg. paid by Medicare
Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613
DME-Drugs Administered Through DME · category DG006N
2 suppliers19 claims4,303 services$0.03 avg. paid by Medicare
Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513
DME-Other DME · category DE000N
4 suppliers13 claims13 services$26.05 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ROBERT GORDON HAMILTON PH.D.
Specialist/Technologist, Pathology (Immunology)
5501 HOPKINS BAYVIEW CIR, ROOM 1A20, JH ASTHMA ALLERGY CENTER
BALTIMORE, MD 21224
Baltimore City (410) 550-2031
DR. JHENEALE R GRANDISON DNP
Nurse Practitioner (Adult Health)
5501 HOPKINS BAYVIEW CIR
BALTIMORE, MD 21224
Baltimore City (410) 550-7715
GEORGE A RICAURTE JR. M.D.
Psychiatry & Neurology (Neurology)
5501 HOPKINS BAYVIEW CIR
BALTIMORE, MD 21224
Baltimore City (410) 550-5624
MICHELLE NUTTALL EAKIN PH.D.
Psychologist (Clinical)
5501 HOPKINS BAYVIEW CIR, ROOM 4B.74
BALTIMORE, MD 21224
Baltimore City (410) 550-0487
RICHARD G BENNETT M.D.
Internal Medicine
5501 HOPKINS BAYVIEW CIR
BALTIMORE, MD 21224
Baltimore City (410) 550-0925
DR. LUU VAN PHAM M.D.
Internal Medicine (Pulmonary Disease)
5501 HOPKINS BAYVIEW CIR, 4TH FLOOR
BALTIMORE, MD 21224
Baltimore City (410) 550-2304
VICTORIA WOTORSON CRNP
Nurse Practitioner (Family)
5501 HOPKINS BAYVIEW CIR
BALTIMORE, MD 21224
Baltimore City (410) 550-5864
VENKATARAMANA SIDHAYE M.D.
Internal Medicine (Pulmonary Disease)
5501 HOPKINS BAYVIEW CIR, ASTHMA AND ALLERGY BUILDING 4TH FLOOR
BALTIMORE, MD 21224
Baltimore City (410) 550-4893

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Liu's NPI number?

The NPI number for Mark Liu is 1790721488. It was assigned to this individual provider in the NPPES registry on June 21, 2006.

Where is Mark Liu located?

Mark Liu practices at 5501 Hopkins Bayview Cir, Baltimore, MD 21224. The listed phone number is (410) 550-5864.

What is Mark Liu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Mark Liu enrolled in Medicare?

Yes. Mark Liu is registered in the Medicare PECOS enrollment system.

Is Mark Liu affiliated with any hospitals?

According to CMS data, Mark Liu is affiliated with Johns Hopkins Hospital, The and Johns Hopkins Bayview Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Liu was last updated on January 27, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.