NPI registry status
Active
2026 NPPES data Pulmonary Disease Physician NPI 1538324868 MD
Verify on CMS → Ikue Nakayama, MD
Pulmonary Disease Physician in Denver, Colorado.
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
783
Medicare Part D claims · 184 beneficiaries · Pulmonary Disease Physician avg: 1K
Generic prescribing
20%
generic claims · 80% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.6/100
▲ 14 pts above national avg 83.1 · Exceptional
Industry payments
$975.54
12 payments · CMS Open Payments (Sunshine Act)
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
Ikue Nakayama, MD reported a CMS MIPS final score of 97.6/100 - above the 83.1 national average - and filed 783 Medicare Part D claims in 2023.
- 97.6/100
- MIPS score · +14 vs avg
- 783
- Part D claims, 2023
- 20%
- 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.
Ikue Nakayama, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 15% higher than 85% 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 Ikue Nakayama, 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, Ikue Nakayama, MD writes more Part D claims than 41% of them and scores higher on MIPS quality than 86% - placing this provider in the lower-volume, high-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 Ikue Nakayama, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ikue Nakayama, 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 Ikue Nakayama, MD?
High performer (top quartile)Primary specialty
Pulmonary Disease Physician
Medicare Part D claims
783 46% vs specialty avg
MIPS final score
97.6/100 14.5 pts vs avg
Specialty distribution in Colorado
How Pulmonary Disease Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
Ikue Nakayama, MD's 2023 MIPS final score plotted against the Pulmonary Disease Physician national average
- MIPS Final Score
- 97.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pulmonary Disease Physician) - 97.6/100 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).
Ikue Nakayama, MD appears in the CMS NPPES registry as a Pulmonary Disease Physician provider holding MD credentials at 100 COOK STREET, Denver, CO, 80206, with a listed phone of (720) 516-9429. NPI 1538324868 was issued on 07/25/2008.
Medicare Part D records for calendar year 2023 show 783 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $432K in drug spend, split 80% brand-name and 20% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 97.6/100 for the 2023 performance year (Quality 86.5), 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 | 1538324868 |
|---|---|
| Specialty | Pulmonary Disease Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 07/25/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Ikue Nakayama, 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.
Poudre Valley Medical Group LLC
Denver, CO
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Ikue Nakayama, MD. Source: openpaymentsdata.cms.gov.
Total received
$976
Largest payer
Olympus Corporation of the Americas
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Brand-heavy
Ikue Nakayama, MD - brand share 80.0%
Pulmonary Disease Physician average
80% brand-name claims vs 20% generic, on 783 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.
783
Total Claims
$432K
Total Drug Cost
184
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,290
- Total Day Supply
- 36,392
- Brand vs Generic
- 80% brand / 20% generic
- Brand Drug Cost
- $416K
- Generic Drug Cost
- $16K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.55
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ikue Nakayama, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Spiriva Respimat
Spiriva Respimat
148 claims
- Symbicort
Symbicort
107 claims
- Advair Hfa
Advair Hfa
103 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
99 claims
- Incruse Ellipta 47
Incruse Ellipta
47 claims
- Stiolto Respimat 37
Stiolto Respimat
37 claims
- Ventolin Hfa 32
Ventolin Hfa
32 claims
- Montelukast Sodium 29
Montelukast Sodium
29 claims
| Drug | Claims |
|---|---|
| Spiriva Respimat Tiotropium Bromide | 148 |
| Symbicort Budesonide/Formoterol Fumarate | 107 |
| Advair Hfa Fluticasone Propion/Salmeterol | 103 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 99 |
| Incruse Ellipta Umeclidinium Bromide | 47 |
| Stiolto Respimat Tiotropium Br/Olodaterol Hcl | 37 |
| Ventolin Hfa Albuterol Sulfate | 32 |
| Montelukast Sodium | 29 |
| Prednisone | 26 |
| Flovent Hfa Fluticasone Propionate | 15 |
* 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 Ikue Nakayama, 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
Ikue Nakayama, MD's 783 claims are below the specialty average of 1,457.
Nearby Pulmonary Disease Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Nakayama.
Dr. Neil Aggarwal
MD
Aurora, CO
Dr. Richard Albert
MD
Aurora, CO
William Alling
Pueblo, CO
Dr. Ahmad Alsaleem
M.D.
Greenwood Village, CO
Dr. Sam Ancheril
MD
Greenwood Village, CO
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 Colorado 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 Ikue Nakayama, MD's specialty? ▼
Ikue Nakayama, MD specializes in Pulmonary Disease Physician and practices in Denver, Colorado. Credentials: MD.
How much does Ikue Nakayama, MD prescribe under Medicare Part D? ▼
In 2023, Ikue Nakayama, MD wrote 783 Medicare Part D claims totaling $432K in drug costs for 184 beneficiaries.
What is Ikue Nakayama, MD's Medicare quality score? ▼
Ikue Nakayama, MD has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ikue Nakayama, MD located? ▼
Ikue Nakayama, MD is located at 100 COOK STREET, Denver, CO, 80206. Phone: (720) 516-9429.
What is Ikue Nakayama, MD's NPI number? ▼
Ikue Nakayama, MD's National Provider Identifier (NPI) is 1538324868, issued on 07/25/2008.
Does Ikue Nakayama, MD prescribe more brand-name or generic drugs? ▼
Ikue Nakayama, MD's prescribing is 80% brand-name and 20% generic drugs by claim count, with $416K 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 Ikue Nakayama, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Ikue Nakayama, MD's most frequently prescribed drugs include Spiriva Respimat, Symbicort, Advair Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ikue Nakayama, MD accept Medicare? ▼
Ikue Nakayama, MD appears in CMS Medicare data with 783 Part D claims and 184 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ikue Nakayama, MD's credentials? ▼
Ikue Nakayama, MD's NPI is 1538324868 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.
- 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.