NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1568979417 NP
Verify on CMS → Rex Tjoa, NP
Primary Care Nurse Practitioner in Long Beach, 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 10,138 in Primary Care 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
2K
Medicare Part D claims · 464 beneficiaries · Primary Care Nurse Practitioner avg: 1K
MIPS score
76.7/100
▼ 6 pts below national avg 83.1 · Above neutral
Industry payments
$1.5K
36 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Rex Tjoa, NP reported a CMS MIPS final score of 76.7/100 - below the 83.1 national average - and filed 2,104 Medicare Part D claims in 2023.
- 76.7/100
- MIPS score · -6 vs avg
- 2K
- Part D claims, 2023
- $1.5K
- industry payments (Sunshine Act)
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.
Rex Tjoa, NP's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
77 21st percentile higher than 21% 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 Rex Tjoa, NP sits
This provider among primary care nurse practitioner peers
Across the 958 primary care nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Rex Tjoa, NP writes more Part D claims than 75% of them and scores higher on MIPS quality than 23% - 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 primary care nurse practitioner peer from a representative sample of 60; the gold marker is Rex Tjoa, NP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Rex Tjoa, NP?
Below national averagePrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
2,104 54% vs specialty avg
MIPS final score
76.7/100 6.4 pts vs avg
Specialty distribution in California
How Primary Care Nurse Practitioner compares to other specialties among California providers
Medicare quality performance, MIPS
Rex Tjoa, NP's 2023 MIPS final score plotted against the Primary Care Nurse Practitioner national average
- MIPS Final Score
- 76.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Primary Care Nurse Practitioner) - 76.7/100 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).
Rex Tjoa, NP appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding NP credentials at 3828 SCHAUFELE AVE STE 200, Long Beach, CA, 90808, with a listed phone of (657) 241-9051. NPI 1568979417 was issued on 01/01/2018.
Medicare Part D records for calendar year 2023 show 2,104 prescription claims written by this provider, covering 464 Medicare beneficiaries and totaling roughly $462K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.7/100 for the 2023 performance year (Quality 80.9, Cost 55.1), compared with the national average of 83.1.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,138 enrolled providers across 54 states and an average of 1,363 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 | 1568979417 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Credentials | NP |
| Gender | Male |
| NPI Issued | 01/01/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
76.7426
Final Score
Avg: 83.1
80.9479
Quality
55.1205
Cost
78
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Rex Tjoa, NP 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.
Memorialcare Medical Foundation
Long Beach, 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).
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 Rex Tjoa, NP. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
Janssen Pharmaceuticals, Inc
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.
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 Rex Tjoa, NP. To verify Rex Tjoa, NP'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,104
Total Claims
$462K
Total Drug Cost
464
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,176
- Total Day Supply
- 154,204
- Generic Drug Cost
- $45K
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 2.00
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 48, 65-74: 226, 75-84: 143, 85+: 47
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Rex Tjoa, NP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Eliquis
Eliquis
200 claims
- Amlodipine Besylate
Amlodipine Besylate
171 claims
- Metoprolol Succinate
Metoprolol Succinate
151 claims
- Atorvastatin Calcium
Atorvastatin Calcium
150 claims
- Carvedilol
Carvedilol
143 claims
- Losartan Potassium
Losartan Potassium
120 claims
- Furosemide
Furosemide
99 claims
- Metoprolol Tartrate 78
Metoprolol Tartrate
78 claims
| Drug | Claims |
|---|---|
| Eliquis Apixaban | 200 |
| Amlodipine Besylate | 171 |
| Metoprolol Succinate | 151 |
| Atorvastatin Calcium | 150 |
| Carvedilol | 143 |
| Losartan Potassium | 120 |
| Furosemide | 99 |
| Metoprolol Tartrate | 78 |
| Hydralazine Hcl | 71 |
| Entresto Sacubitril/Valsartan | 68 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Primary Care Nurse Practitioner Overview
How Rex Tjoa, NP fits within the Primary Care Nurse Practitioner landscape nationally.
10,138
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Rex Tjoa, NP's 2,104 claims are above the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Tjoa.
Pernian Abadi
Bakersfield, CA
Ann Abraham
Long Beach, CA
Dr. Angelica Acevedo
FNP
Parlier, CA
Dr. Natalie Adame
PNP
Orange, CA
Dr. Tracie Adamson
NP, CNS, LCSW
Palo Alto, CA
Compare Primary Care 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 Primary Care 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Rex Tjoa, NP's specialty? ▼
Rex Tjoa, NP specializes in Primary Care Nurse Practitioner and practices in Long Beach, California. Credentials: NP.
How much does Rex Tjoa, NP prescribe under Medicare Part D? ▼
In 2023, Rex Tjoa, NP wrote 2,104 Medicare Part D claims totaling $462K in drug costs for 464 beneficiaries.
What is Rex Tjoa, NP's Medicare quality score? ▼
Rex Tjoa, NP has a CMS MIPS Final Score of 76.7/100 (Quality: 80.9, Cost: 55.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Rex Tjoa, NP located? ▼
Rex Tjoa, NP is located at 3828 SCHAUFELE AVE STE 200, Long Beach, CA, 90808. Phone: (657) 241-9051.
What is Rex Tjoa, NP's NPI number? ▼
Rex Tjoa, NP's National Provider Identifier (NPI) is 1568979417, issued on 01/01/2018.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,138 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Rex Tjoa, NP prescribe most often? ▼
Based on 2023 Medicare Part D data, Rex Tjoa, NP's most frequently prescribed drugs include Eliquis, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Rex Tjoa, NP accept Medicare? ▼
Rex Tjoa, NP appears in CMS Medicare data with 2,104 Part D claims and 464 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Rex Tjoa, NP's credentials? ▼
Rex Tjoa, NP's NPI is 1568979417 with credentials NP. 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.