NPI registry status
Active
2026 NPPES data Pulmonary Disease Physician NPI 1750324935 M.D.
Verify on CMS → Audrey Liu, M.D.
Pulmonary Disease Physician in Baltimore, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,271 in Pulmonary Disease Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 307 beneficiaries · Pulmonary Disease Physician avg: 1K
Generic prescribing
0%
generic claims · 66% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.3/100
▲ 0 pts above national avg 83.1 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Audrey Liu, M.D. reported a CMS MIPS final score of 83.3/100 - above the 83.1 national average - and filed 1,689 Medicare Part D claims in 2023.
- 83.3/100
- MIPS score · +0 vs avg
- 2K
- Part D claims, 2023
- 0%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Audrey Liu, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
83 42nd percentile higher than 42% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Audrey Liu, M.D. sits
This provider among pulmonary disease physician peers
Across the 2,676 pulmonary disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Audrey Liu, M.D. writes more Part D claims than 65% of them and scores higher on MIPS quality than 47% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one pulmonary disease physician peer from a representative sample of 60; the gold marker is Audrey Liu, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Audrey Liu, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Audrey Liu, M.D.?
Near national averagePrimary specialty
Pulmonary Disease Physician
Medicare Part D claims
1,689 16% vs specialty avg
MIPS final score
83.3/100 0.2 pts vs avg
Specialty distribution in Maryland
How Pulmonary Disease Physician compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Audrey Liu, M.D.'s 2023 MIPS final score plotted against the Pulmonary Disease Physician national average
- MIPS Final Score
- 83.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pulmonary Disease Physician) - 83.3/100 vs national avg 83.1
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Audrey Liu, M.D. appears in the CMS NPPES registry as a Pulmonary Disease Physician provider holding M.D. credentials at 4940 EASTERN AVE, Baltimore, MD, 21224, with a listed phone of (410) 955-3467. NPI 1750324935 was issued on 06/14/2006.
Medicare Part D records for calendar year 2023 show 1,689 prescription claims written by this provider, covering 307 Medicare beneficiaries and totaling roughly $767K in drug spend, split 66% brand-name and 0% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.3/100 for the 2023 performance year (Quality 69.7), compared with the national average of 83.1.
Pulmonary Disease Physician is a mid-sized specialty nationwide, with 9,271 enrolled providers across 53 states and an average of 1,457 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1750324935 |
|---|---|
| Specialty | Pulmonary Disease Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
83.3366
Final Score
Avg: 83.1
69.703
Quality
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Audrey Liu, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
St Paul Place Specialists, Inc.
Lutherville, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Audrey Liu, M.D. - brand share 66.0%
Pulmonary Disease Physician average
66% brand-name claims vs 0% generic, on 1,689 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,689
Total Claims
$767K
Total Drug Cost
307
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,912
- Total Day Supply
- 83,008
- Brand vs Generic
- 66% brand / 0% generic
- Brand Drug Cost
- $711K
- Antibiotic Claims
- 92
Patient Demographics
- Average Patient Age
- 71.9 years
- Avg HCC Risk Score
- 1.73
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 50, 65-74: 138, 75-84: 99, 85+: 20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Audrey Liu, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
313 claims
- Trelegy Ellipta
Trelegy Ellipta
247 claims
- Breo Ellipta
Breo Ellipta
146 claims
- Prednisone 111
Prednisone
111 claims
- Montelukast Sodium 95
Montelukast Sodium
95 claims
- Arnuity Ellipta 92
Arnuity Ellipta
92 claims
- Spiriva Respimat 75
Spiriva Respimat
75 claims
- Incruse Ellipta 62
Incruse Ellipta
62 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 313 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 247 |
| Breo Ellipta Fluticasone/Vilanterol | 146 |
| Prednisone | 111 |
| Montelukast Sodium | 95 |
| Arnuity Ellipta Fluticasone Furoate | 92 |
| Spiriva Respimat Tiotropium Bromide | 75 |
| Incruse Ellipta Umeclidinium Bromide | 62 |
| Ventolin Hfa Albuterol Sulfate | 55 |
| Azithromycin | 52 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pulmonary Disease Physician Overview
How Audrey Liu, M.D. fits within the Pulmonary Disease Physician landscape nationally.
9,271
Pulmonary Disease Physician Providers in US
53
States with Pulmonary Disease Physician
1,457
Avg Claims per Provider
Audrey Liu, M.D.'s 1,689 claims are above the specialty average of 1,457.
Nearby Pulmonary Disease Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Liu.
Dr. Lev Agarunov
M.D.
Frederick, MD
Dr. Kalim Ahmed
MD
Hagerstown, MD
Dr. Ahmad Alkhatatneh
MD
White Plains, MD
Dr. Muhtadi Alnababteh
MD
Baltimore, MD
Dr. Susan Andrews
M.D.
Berlin, MD
Compare Pulmonary Disease Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pulmonary Disease Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Audrey Liu, M.D.'s specialty? ▼
Audrey Liu, M.D. specializes in Pulmonary Disease Physician and practices in Baltimore, Maryland. Credentials: M.D..
How much does Audrey Liu, M.D. prescribe under Medicare Part D? ▼
In 2023, Audrey Liu, M.D. wrote 1,689 Medicare Part D claims totaling $767K in drug costs for 307 beneficiaries.
What is Audrey Liu, M.D.'s Medicare quality score? ▼
Audrey Liu, M.D. has a CMS MIPS Final Score of 83.3/100 (Quality: 69.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Audrey Liu, M.D. located? ▼
Audrey Liu, M.D. is located at 4940 EASTERN AVE, Baltimore, MD, 21224. Phone: (410) 955-3467.
What is Audrey Liu, M.D.'s NPI number? ▼
Audrey Liu, M.D.'s National Provider Identifier (NPI) is 1750324935, issued on 06/14/2006.
Does Audrey Liu, M.D. prescribe more brand-name or generic drugs? ▼
Audrey Liu, M.D.'s prescribing is 66% brand-name and 0% generic drugs by claim count, with $711K in brand drug costs.
How many Pulmonary Disease Physician providers are there in the US? ▼
There are 9,271 Pulmonary Disease Physician providers across 53 states in the US. The average Pulmonary Disease Physician provider writes 1,457 Medicare Part D claims per year.
What drugs does Audrey Liu, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Audrey Liu, M.D.'s most frequently prescribed drugs include Albuterol Sulfate Hfa, Trelegy Ellipta, Breo Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Audrey Liu, M.D. accept Medicare? ▼
Audrey Liu, M.D. appears in CMS Medicare data with 1,689 Part D claims and 307 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Audrey Liu, M.D.'s credentials? ▼
Audrey Liu, M.D.'s NPI is 1750324935 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.