NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1033573639 DNP, NP-C
Verify on CMS → Iris Buan, DNP, NP-C
Family Nurse Practitioner in Cerritos, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family Nurse Practitioner, 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
3K
Medicare Part D claims · 276 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
92%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Iris Buan, DNP, NP-C filed 2,633 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Cerritos, California, prescribing 92% generic.
- 3K
- Part D claims, 2023
- 92%
- generic prescribing
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.
Iris Buan, DNP, NP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,633 Top 13% higher than 87% 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
What does the federal data show about Iris Buan, DNP, NP-C?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
2,633 115% vs specialty avg
Specialty distribution in California
How Family Nurse Practitioner compares to other specialties among California 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 Family Nurse Practitioner. 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).
Iris Buan, DNP, NP-C appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding DNP, NP-C credentials at 12900 PARK PLAZA DR, Cerritos, CA, 90703, with a listed phone of (310) 808-3410. NPI 1033573639 was issued on 04/09/2016.
Medicare Part D records for calendar year 2023 show 2,633 prescription claims written by this provider, covering 276 Medicare beneficiaries and totaling roughly $186K in drug spend, split 7% brand-name and 92% generic by claim count, with an opioid prescribing rate of 3.5%.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1033573639 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | DNP, NP-C |
| Gender | Female |
| NPI Issued | 04/09/2016 |
Hospital and facility affiliations
Facilities where Iris Buan, DNP, NP-C 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.
Albion Medical Partners OF California West PC
Cerritos, CA
Carequest Solutions Nursing
Anaheim, CA
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 - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Iris Buan, DNP, NP-C. To verify Iris Buan, DNP, NP-C's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Iris Buan, DNP, NP-C - brand share 7.0%
Family Nurse Practitioner average
7% brand-name claims vs 92% generic, on 2,633 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.
2,633
Total Claims
$186K
Total Drug Cost
276
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,932
- Total Day Supply
- 78,623
- Brand vs Generic
- 7% brand / 92% generic
- Brand Drug Cost
- $97K
- Generic Drug Cost
- $89K
- Opioid Claims
- 92 (3.5% rate)
- Antibiotic Claims
- 88
Patient Demographics
- Average Patient Age
- 84.9 years
- Avg HCC Risk Score
- 2.23
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Iris Buan, DNP, NP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
112 claims
- Gabapentin
Gabapentin
93 claims
- Levothyroxine Sodium
Levothyroxine Sodium
88 claims
- Atorvastatin Calcium
Atorvastatin Calcium
83 claims
- Losartan Potassium
Losartan Potassium
71 claims
- Quetiapine Fumarate
Quetiapine Fumarate
70 claims
- Pantoprazole Sodium
Pantoprazole Sodium
63 claims
- Metoprolol Succinate
Metoprolol Succinate
60 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 112 |
| Gabapentin | 93 |
| Levothyroxine Sodium | 88 |
| Atorvastatin Calcium | 83 |
| Losartan Potassium | 71 |
| Quetiapine Fumarate | 70 |
| Pantoprazole Sodium | 63 |
| Metoprolol Succinate | 60 |
| Furosemide | 59 |
| Tamsulosin Hcl | 58 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Iris Buan, DNP, NP-C fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Iris Buan, DNP, NP-C's 2,633 claims are above the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Buan.
Dr. Danielle Aaroe
FAMILY NURSE PRACTIT
Oroville, CA
Joshua Aaron
Mission Hills, CA
Dr. Orly Aaron
NP
San Francisco, CA
Paris Gilbert Russ Aaron
Sacramento, CA
Dr. Alvin Joseph Abad
FNP-C
San Francisco, CA
Compare Family Nurse Practitioner 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Nurse Practitioner 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 Iris Buan, DNP, NP-C's specialty? ▼
Iris Buan, DNP, NP-C specializes in Family Nurse Practitioner and practices in Cerritos, California. Credentials: DNP, NP-C.
How much does Iris Buan, DNP, NP-C prescribe under Medicare Part D? ▼
In 2023, Iris Buan, DNP, NP-C wrote 2,633 Medicare Part D claims totaling $186K in drug costs for 276 beneficiaries.
Where is Iris Buan, DNP, NP-C located? ▼
Iris Buan, DNP, NP-C is located at 12900 PARK PLAZA DR, Cerritos, CA, 90703. Phone: (310) 808-3410.
What is Iris Buan, DNP, NP-C's NPI number? ▼
Iris Buan, DNP, NP-C's National Provider Identifier (NPI) is 1033573639, issued on 04/09/2016.
Does Iris Buan, DNP, NP-C prescribe more brand-name or generic drugs? ▼
Iris Buan, DNP, NP-C's prescribing is 7% brand-name and 92% generic drugs by claim count, with $97K in brand drug costs.
Does Iris Buan, DNP, NP-C prescribe opioids? ▼
Yes, Iris Buan, DNP, NP-C had 92 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Iris Buan, DNP, NP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Iris Buan, DNP, NP-C's most frequently prescribed drugs include Amlodipine Besylate, Gabapentin, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Iris Buan, DNP, NP-C accept Medicare? ▼
Iris Buan, DNP, NP-C appears in CMS Medicare data with 2,633 Part D claims and 276 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Iris Buan, DNP, NP-C's credentials? ▼
Iris Buan, DNP, NP-C's NPI is 1033573639 with credentials DNP, NP-C. 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
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.