NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1942202080 DO
Verify on CMS → Clarence Joustra, DO
Family Medicine Physician in Lamar, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine 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
16K
Medicare Part D claims · 560 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
21.9/100
▼ 62 pts below national avg 83.5 · Below average
Industry payments
$206.38
11 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Clarence Joustra, DO reported a CMS MIPS final score of 21.9/100 - below the 83.5 national average - and filed 15,623 Medicare Part D claims in 2023.
- 21.9/100
- MIPS score · -62 vs avg
- 16K
- Part D claims, 2023
- 83%
- 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.
CMS NPPES provider registry desk
NPI 1942202080 · Family Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-LOW · RX-HEAVY · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1942202080
- ENUM-LEGACY 2005
- TAX-MEGA 148K Family Medicine
- MIPS-LOW 21.9/100
- RX-HEAVY 16K claims
- BOOK-LIGHT 2,881 in Missouri
- PHOTO-FINISH Fayva Lurie · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Joustra · this p…
Joustra · this provider
21.9 MIPS pts
- Alphonsus Flanne…
Alphonsus Flannery
21.9 MIPS pts
- Samuel Broffitt …
Samuel Broffitt
21.9 MIPS pts
- Sanford White · …
Sanford White
21.9 MIPS pts
- Fayva Lurie · near
Fayva Lurie
21.9 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Clarence Joustra, DO's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
22 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Clarence Joustra, DO sits
This provider among family medicine physician peers
Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Clarence Joustra, DO writes more Part D claims than 96% of them and scores higher on MIPS quality than 3% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Clarence Joustra, DO. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Clarence Joustra, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Clarence Joustra, DO?
Below national averagePrimary specialty
Family Medicine Physician
Medicare Part D claims
15,623 357% vs specialty avg
MIPS final score
21.9/100 61.6 pts vs avg
Specialty distribution in Missouri
How Family Medicine Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
Clarence Joustra, DO's 2023 MIPS final score plotted against the Family Medicine Physician national average
- MIPS Final Score
- 21.9/100
- vs 83.5 national avg · 2023 performance year
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).
Practice Address
Provider Details
| NPI | 1942202080 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 08/10/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
21.871
Final Score
Measured-score avg: 83.5
15
Quality
46.7537
Cost
Reporting: Individual
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 Clarence Joustra, DO. Source: openpaymentsdata.cms.gov.
Total received
$206
Largest payer
PFIZER 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.
Brand vs generic prescribing mix · Typical
Clarence Joustra, DO - brand share 16.0%
Family Medicine Physician average
16% brand-name claims vs 83% generic, on 15,623 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.
15,623
Total Claims
$1.3M
Total Drug Cost
560
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21,986
- Total Day Supply
- 569,026
- Brand vs Generic
- 16% brand / 83% generic
- Brand Drug Cost
- $1.0M
- Generic Drug Cost
- $287K
- Opioid Claims
- 1,151 (7.4% rate)
- Antibiotic Claims
- 956
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.16
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 56, 65-74: 276, 75-84: 178, 85+: 50
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Clarence Joustra, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
691 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
543 claims
- Lisinopril
Lisinopril
443 claims
- Gabapentin
Gabapentin
425 claims
- Carvedilol
Carvedilol
376 claims
- Amlodipine Besylate
Amlodipine Besylate
373 claims
- Omeprazole
Omeprazole
337 claims
- Lorazepam
Lorazepam
329 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 691 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 543 |
| Lisinopril | 443 |
| Gabapentin | 425 |
| Carvedilol | 376 |
| Amlodipine Besylate | 373 |
| Omeprazole | 337 |
| Lorazepam | 329 |
| Eliquis Apixaban | 316 |
| Alprazolam | 278 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Clarence Joustra, DO fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Clarence Joustra, DO's 15,623 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Joustra, both outside Missouri so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (21.9 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Joustra.
One of 2,881 Family Medicine Physician providers enrolled in Missouri, 5 are shown here.
Dr. Mohammad Abbas
DO
Kirksville, MO
Dr. Karam Abdelmasih
MD, AP
Festus, MO
Dr. Afsheen Abdullah Patel
MD
Lees Summit, MO
Dr. Christopher Abercrombie
DO
Arnold, MO
Dr. Avery Abernathy
D.O.
Kansas City, MO
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Clarence Joustra, DO's specialty? ▼
Clarence Joustra, DO specializes in Family Medicine Physician and practices in Lamar, Missouri. Credentials: DO.
How much does Clarence Joustra, DO prescribe under Medicare Part D? ▼
In 2023, Clarence Joustra, DO wrote 15,623 Medicare Part D claims totaling $1.3M in drug costs for 560 beneficiaries.
What is Clarence Joustra, DO's Medicare quality score? ▼
Clarence Joustra, DO has a CMS MIPS Final Score of 21.9/100 (Quality: 15, Cost: 46.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Clarence Joustra, DO located? ▼
Clarence Joustra, DO is located at 805 GULF ST, Lamar, MO, 64759. Phone: (417) 682-5508.
What is Clarence Joustra, DO's NPI number? ▼
Clarence Joustra, DO's National Provider Identifier (NPI) is 1942202080, issued on 08/10/2005.
Does Clarence Joustra, DO prescribe more brand-name or generic drugs? ▼
Clarence Joustra, DO's prescribing is 16% brand-name and 83% generic drugs by claim count, with $1.0M in brand drug costs.
Does Clarence Joustra, DO prescribe opioids? ▼
Yes, Clarence Joustra, DO had 1,151 opioid claims in 2023 with an opioid prescribing rate of 7.4%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Clarence Joustra, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Clarence Joustra, DO's most frequently prescribed drugs include Levothyroxine Sodium, Hydrocodone-Acetaminophen, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Clarence Joustra, DO accept Medicare? ▼
Clarence Joustra, DO appears in CMS Medicare data with 15,623 Part D claims and 560 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Clarence Joustra, DO's credentials? ▼
Clarence Joustra, DO's NPI is 1942202080 with credentials DO. 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
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.