NPI registry status
Active
2026 NPPES data Dermatology Physician NPI 1316269160 MD
Verify on CMS → Yen Chen Liu, MD
Dermatology Physician in Mason City, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 14,645 in Dermatology 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 · 462 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Yen Chen Liu, MD filed 1,260 Medicare Part D claims in 2023 as a Dermatology Physician in Mason City, Iowa, prescribing 92% generic.
- 1K
- Part D claims, 2023
- 92%
- 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.
Yen Chen Liu, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,260 Top 22% higher than 78% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Yen Chen Liu, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - 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 Yen Chen Liu, MD?
Quality data not reportedPrimary specialty
Dermatology Physician
Medicare Part D claims
1,260 73% vs specialty avg
Specialty distribution in Iowa
How Dermatology Physician compares to other specialties among Iowa providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Dermatology Physician. Verify directly:
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).
Yen Chen Liu, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 1421 4TH ST SW, Mason City, IA, 50401, with a listed phone of (641) 428-2080. NPI 1316269160 was issued on 02/22/2010.
Medicare Part D records for calendar year 2023 show 1,260 prescription claims written by this provider, covering 462 Medicare beneficiaries and totaling roughly $798K in drug spend, split 8% brand-name and 92% generic by claim count.
Dermatology Physician is a mid-sized specialty nationwide, with 14,645 enrolled providers across 53 states and an average of 729 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 | 1316269160 |
|---|---|
| Specialty | Dermatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/22/2010 |
Hospital and facility affiliations
Facilities where Yen Chen Liu, 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.
Mitchell County Memorial Hospital
Osage, IA
North Iowa Mercy Clinics
Mason City, IA
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 · Generic-heavy
Yen Chen Liu, MD - brand share 8.0%
Dermatology Physician average
8% brand-name claims vs 92% generic, on 1,260 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.
1,260
Total Claims
$798K
Total Drug Cost
462
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,453
- Total Day Supply
- 36,645
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $727K
- Generic Drug Cost
- $71K
- Antibiotic Claims
- 138
Patient Demographics
- Average Patient Age
- 74.3 years
- Avg HCC Risk Score
- 1.01
- Gender Split
- 43% female / 57% male
- Age Distribution
- <65: 33, 65-74: 204, 75-84: 156, 85+: 69
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Yen Chen Liu, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Betamethasone Dipr…
Betamethasone Diprop Augmented
197 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
178 claims
- Hydrocortisone
Hydrocortisone
86 claims
- Clobetasol Propion…
Clobetasol Propionate
85 claims
- Ketoconazole 61
Ketoconazole
61 claims
- Cephalexin 51
Cephalexin
51 claims
- Methotrexate 51
Methotrexate
51 claims
- Mycophenolate Mofe… 51
Mycophenolate Mofetil
51 claims
| Drug | Claims |
|---|---|
| Betamethasone Diprop Augmented Betamethasone/Propylene Glyc | 197 |
| Triamcinolone Acetonide | 178 |
| Hydrocortisone | 86 |
| Clobetasol Propionate | 85 |
| Ketoconazole | 61 |
| Cephalexin | 51 |
| Methotrexate Methotrexate Sodium | 51 |
| Mycophenolate Mofetil | 51 |
| Hydroxychloroquine Sulfate | 42 |
| Doxycycline Hyclate | 39 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Dermatology Physician Overview
How Yen Chen Liu, MD fits within the Dermatology Physician landscape nationally.
14,645
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider
Yen Chen Liu, MD's 1,260 claims are above the specialty average of 729.
Nearby Dermatology Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Liu.
Roshan Abid
Iowa City, IA
Dr. Richard Ameln
M.D.
Ottumwa, IA
Dr. Vincent Angeloni
M.D.
Clive, IA
Dr. Mirza Baig
M.D.
Des Moines, IA
Dr. Robert Barry
M.D.
Cedar Rapids, IA
Compare Dermatology 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 Iowa medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Dermatology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Iowa
Frequently Asked Questions
What is Yen Chen Liu, MD's specialty? ▼
Yen Chen Liu, MD specializes in Dermatology Physician and practices in Mason City, Iowa. Credentials: MD.
How much does Yen Chen Liu, MD prescribe under Medicare Part D? ▼
In 2023, Yen Chen Liu, MD wrote 1,260 Medicare Part D claims totaling $798K in drug costs for 462 beneficiaries.
Where is Yen Chen Liu, MD located? ▼
Yen Chen Liu, MD is located at 1421 4TH ST SW, Mason City, IA, 50401. Phone: (641) 428-2080.
What is Yen Chen Liu, MD's NPI number? ▼
Yen Chen Liu, MD's National Provider Identifier (NPI) is 1316269160, issued on 02/22/2010.
Does Yen Chen Liu, MD prescribe more brand-name or generic drugs? ▼
Yen Chen Liu, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $727K in brand drug costs.
How many Dermatology Physician providers are there in the US? ▼
There are 14,645 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does Yen Chen Liu, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Yen Chen Liu, MD's most frequently prescribed drugs include Betamethasone Diprop Augmented, Triamcinolone Acetonide, Hydrocortisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Yen Chen Liu, MD accept Medicare? ▼
Yen Chen Liu, MD appears in CMS Medicare data with 1,260 Part D claims and 462 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Yen Chen Liu, MD's credentials? ▼
Yen Chen Liu, MD's NPI is 1316269160 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
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.
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.