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2026 NPPES data Family Medicine Physician NPI 1952484909 M.D.
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Chester De Jong, M.D.

Family Medicine Physician in Rock Rapids, 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 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
8K
Medicare Part D claims · 502 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
76.7/100
▼ 7 pts below national avg 83.5 · Above neutral
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Chester De Jong, M.D. reported a CMS MIPS final score of 76.7/100 - below the 83.5 national average - and filed 7,503 Medicare Part D claims in 2023.

76.7/100
MIPS score · -7 vs avg
8K
Part D claims, 2023
90%
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 1952484909 · Family Medicine Physician

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-BELOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1952484909
  • ENUM-LEGACY 2006
  • TAX-MEGA 148K Family Medicine
  • MIPS-BELOW 76.7/100
  • RX-MID 7,503
  • BOOK-LIGHT 2,267 in Iowa
  • PHOTO-FINISH Mark Beard · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Chester De Jong, M.D.'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.

77 ≥ 17th percentile 17% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Chester De Jong, M.D. 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, Chester De Jong, M.D. writes more Part D claims than 80% of them and scores higher on MIPS quality than 20% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 37Chester De Jong, M.D., Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 20
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Chester De Jong, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Chester De Jong, M.D. 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 Chester De Jong, M.D.?

Below national average

NPI registry status

Active

Issued 10/23/2006

NPI 1952484909

Primary specialty

Family Medicine Physician

High-volume

147,760 US NPIs in this specialty

Medicare Part D claims

7,503 120% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

76.7/100 6.8 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Iowa

How Family Medicine Physician compares to other specialties among Iowa providers

Iowa providers
Pharmacist6.6%Physical Therapist5.5%Mental Health Counselor5%Family Medicine Physician4.8%Chiropractor4.2%Clinical Social Worker4.1%
Largest specialties in Iowa (% of in-state providers)

Medicare quality performance, MIPS

Chester De Jong, M.D.'s 2023 MIPS final score plotted against the Family Medicine Physician national average

Below national average
MIPS Final Score
76.7/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%76.7%
MIPS final score (Family Medicine Physician) - 76.7/100 vs national avg 83.5
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

803 S GREENE ST
Rock Rapids, IA 51246
(712) 472-3716

Provider Details

NPI 1952484909
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 10/23/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

76.6912
Final Score
Measured-score avg: 83.5
78.5693
Quality
44.5681
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Chester De Jong, M.D. 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.

Sanford Medical Center
Rock Rapids, 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 · Typical

Chester De Jong, M.D. - brand share 10.0%
Family Medicine Physician average

10% brand-name claims vs 90% generic, on 7,503 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.

7,503
Total Claims
$473K
Total Drug Cost
502
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,394
Total Day Supply
349,747
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$371K
Generic Drug Cost
$100K
Opioid Claims
165 (2.2% rate)
Antibiotic Claims
124

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
1.02
Gender Split
50% female / 50% male
Age Distribution
<65: 46, 65-74: 220, 75-84: 142, 85+: 94

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Chester De Jong, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Rosuvastatin Calcium
 443
Amlodipine Besylate
 296
Lisinopril
 288
Atorvastatin Calcium
 285
Levothyroxine Sodium
 235
Metoprolol Succinate
 232
Omeprazole
 230
Losartan Potassium
 208
Furosemide
 199
Metformin Hcl
 198

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Family Medicine Physician in IA → All providers in Iowa → Compare specialties →

Family Medicine Physician Overview

How Chester De Jong, M.D. 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

Chester De Jong, M.D.'s 7,503 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 De Jong, both outside Iowa so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (76.7 here).

Mark Beard 76.7 SD Christopher Boschee 76.7 SD Scott Boyens 76.7 SD Stephanie Broderson 76.7 SD

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Richard Christensen-Dalia Novato, CA Irina Didier Asheville, NC Luis Castano Miami, FL James Michener Durham, NC

Nearby Family Medicine Physician Providers in Iowa

Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as De Jong.

One of 2,267 Family Medicine Physician providers enrolled in Iowa, 5 are shown here.

Dr. Jennifer Aanestad
M.D.
Durant, IA
Dr. Amjad Abdelhady
MD
Sioux City, IA
Dr. Afsana Abdullah
D.O.
Bettendorf, IA
Dr. Raja Ali Abdullah
MD
Cedar Falls, IA
Dr. Laura Abels
DO
Ankeny, IA

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Chester De Jong, M.D.'s specialty? ▼
Chester De Jong, M.D. specializes in Family Medicine Physician and practices in Rock Rapids, Iowa. Credentials: M.D..
How much does Chester De Jong, M.D. prescribe under Medicare Part D? ▼
In 2023, Chester De Jong, M.D. wrote 7,503 Medicare Part D claims totaling $473K in drug costs for 502 beneficiaries.
What is Chester De Jong, M.D.'s Medicare quality score? ▼
Chester De Jong, M.D. has a CMS MIPS Final Score of 76.7/100 (Quality: 78.6, Cost: 44.6). 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 Chester De Jong, M.D. located? ▼
Chester De Jong, M.D. is located at 803 S GREENE ST, Rock Rapids, IA, 51246. Phone: (712) 472-3716.
What is Chester De Jong, M.D.'s NPI number? ▼
Chester De Jong, M.D.'s National Provider Identifier (NPI) is 1952484909, issued on 10/23/2006.
Does Chester De Jong, M.D. prescribe more brand-name or generic drugs? ▼
Chester De Jong, M.D.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $371K in brand drug costs.
Does Chester De Jong, M.D. prescribe opioids? ▼
Yes, Chester De Jong, M.D. had 165 opioid claims in 2023 with an opioid prescribing rate of 2.2%.
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 Chester De Jong, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Chester De Jong, M.D.'s most frequently prescribed drugs include Rosuvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chester De Jong, M.D. accept Medicare? ▼
Chester De Jong, M.D. appears in CMS Medicare data with 7,503 Part D claims and 502 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chester De Jong, M.D.'s credentials? ▼
Chester De Jong, M.D.'s NPI is 1952484909 with credentials M.D.. 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 editorial process.

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.