2026 NPPES data Pulmonary Disease Physician NPI 1821156126 MD
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Hsienchang Chiu, MD

Pulmonary Disease Physician in Dallas, Texas. 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
1K
Medicare Part D claims · 311 beneficiaries · Pulmonary Disease Physician avg: 1K
Generic prescribing
0%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.6/100
▼ 9 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Hsienchang Chiu, MD reported a CMS MIPS final score of 74.6/100 - below the 83.1 national average - and filed 1,380 Medicare Part D claims in 2023.

74.6/100
MIPS score · -9 vs avg
1K
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.

Hsienchang Chiu, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

75 12th percentile higher than 12% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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 Hsienchang Chiu, MD 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, Hsienchang Chiu, MD writes more Part D claims than 58% of them and scores higher on MIPS quality than 15% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.448.873.297.7Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 42Hsienchang Chiu, MD-Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 15
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 Hsienchang Chiu, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Hsienchang Chiu, MD 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 Hsienchang Chiu, MD?

Below national average

NPI registry status

Active

Issued 12/05/2006

NPI 1821156126

Primary specialty

Pulmonary Disease Physician

Mid-sized

9,271 US NPIs in this specialty

Medicare Part D claims

1,380 5% vs specialty avg

2023 prescription claims

Specialty avg: 1,457

MIPS final score

74.6/100 8.5 pts vs avg

Mid-tier band

vs 83.1 national avg

Specialty distribution in Texas

How Pulmonary Disease Physician compares to other specialties among Texas providers

Texas providers

Largest specialties in Texas (% of in-state providers)

Behavior Technician - 5.6%Behavior Technician5.6%Student in an Organized Health Care Education/Training Program - 5.1%Student in an Organized Health Care Education/Training Program5.1%Family Nurse Practitioner - 4.5%Family Nurse Practitioner4.5%Professional Counselor - 4.4%Professional Counselor4.4%Pharmacist - 4.4%Pharmacist4.4%Speech-Language Pathologist - 3.9%Speech-Language Pathologist3.9%Pulmonary Disease Physician - 0.1%Pulmonary Disease Physician0.1%
Largest specialties in Texas (% of in-state providers)

Medicare quality performance, MIPS

Hsienchang Chiu, MD's 2023 MIPS final score plotted against the Pulmonary Disease Physician national average

Below national average
MIPS Final Score
74.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Pulmonary Disease Physician) - 74.6/100 vs national avg 83.1

0%100%National avg83%74.6%
MIPS final score (Pulmonary Disease Physician) - 74.6/100 vs national avg 83.1

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).

Hsienchang Chiu, MD appears in the CMS NPPES registry as a Pulmonary Disease Physician provider holding MD credentials at 5201 HARRY HINES BLVD, Dallas, TX, 75235, with a listed phone of (214) 590-8000. NPI 1821156126 was issued on 12/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Chiu most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,380 prescription claims written by this provider, covering 311 Medicare beneficiaries and totaling roughly $443K in drug spend, split 54% brand-name and 0% generic by claim count. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 74.6/100 for the 2023 performance year (Quality 56.1, Cost 59.2), 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

5201 HARRY HINES BLVD
Dallas, TX 75235

Provider Details

NPI 1821156126
Specialty Pulmonary Disease Physician
Credentials MD
Gender Male
NPI Issued 12/05/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

74.5984
Final Score
Avg: 83.1
56.1252
Quality
59.2027
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Hsienchang Chiu, MD 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.

University OF Texas Southwestern Medical Center AT Dallas
Richardson, TX

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context - Texas TMB 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Hsienchang Chiu, MD. To verify Hsienchang Chiu, MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

Hsienchang Chiu, MD - brand share 54.0%
Pulmonary Disease Physician average

54% brand-name claims vs 0% generic, on 1,380 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.

1,380
Total Claims
$443K
Total Drug Cost
311
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,801
Total Day Supply
48,092
Brand vs Generic
54% brand / 0% generic
Brand Drug Cost
$415K
Antibiotic Claims
257

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
2.25
Gender Split
60% female / 40% male
Age Distribution
<65: 24, 65-74: 137, 75-84: 123, 85+: 27

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Hsienchang Chiu, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Advair Hfa
Fluticasone Propion/Salmeterol
164
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
156
Azithromycin
149
Prednisone
96
Albuterol Sulfate Hfa
Albuterol Sulfate
88
Ipratropium Bromide
76
Symbicort
Budesonide/Formoterol Fumarate
59
Levofloxacin
48
Fluticasone-Salmeterol
Fluticasone Propion/Salmeterol
46
Doxycycline Monohydrate
43

* 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 Hsienchang Chiu, MD 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

Hsienchang Chiu, MD's 1,380 claims are below the specialty average of 1,457.

Nearby Pulmonary Disease Physician Providers in Texas

Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Chiu.

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 Texas 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.

Frequently Asked Questions

What is Hsienchang Chiu, MD's specialty?
Hsienchang Chiu, MD specializes in Pulmonary Disease Physician and practices in Dallas, Texas. Credentials: MD.
How much does Hsienchang Chiu, MD prescribe under Medicare Part D?
In 2023, Hsienchang Chiu, MD wrote 1,380 Medicare Part D claims totaling $443K in drug costs for 311 beneficiaries.
What is Hsienchang Chiu, MD's Medicare quality score?
Hsienchang Chiu, MD has a CMS MIPS Final Score of 74.6/100 (Quality: 56.1, Cost: 59.2). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Hsienchang Chiu, MD located?
Hsienchang Chiu, MD is located at 5201 HARRY HINES BLVD, Dallas, TX, 75235. Phone: (214) 590-8000.
What is Hsienchang Chiu, MD's NPI number?
Hsienchang Chiu, MD's National Provider Identifier (NPI) is 1821156126, issued on 12/05/2006.
Does Hsienchang Chiu, MD prescribe more brand-name or generic drugs?
Hsienchang Chiu, MD's prescribing is 54% brand-name and 0% generic drugs by claim count, with $415K 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 Hsienchang Chiu, MD prescribe most often?
Based on 2023 Medicare Part D data, Hsienchang Chiu, MD's most frequently prescribed drugs include Advair Hfa, Trelegy Ellipta, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hsienchang Chiu, MD accept Medicare?
Hsienchang Chiu, MD appears in CMS Medicare data with 1,380 Part D claims and 311 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hsienchang Chiu, MD's credentials?
Hsienchang Chiu, MD's NPI is 1821156126 with credentials MD. 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

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.