NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1700859907 DO
Verify on CMS → Eric Chenworth, DO
Allergy & Immunology Physician in Riverton, Utah.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,412 in Allergy & Immunology 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
46
Medicare Part D claims · 14 beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
63%
generic claims · 37% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Eric Chenworth, DO filed 46 Medicare Part D claims in 2024 as an Allergy & Immunology Physician in Riverton, Utah, prescribing 63% generic.
- 46
- Part D claims, 2024
- 63%
- generic prescribing
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Eric Chenworth, DO
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1700859907), first enumerated 02/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 46 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1700859907 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1700859907
- ENUM-LEGACY 2006
- TAX-NARROW 3,412
- RX-TRACE 46
- BOOK-THIN 22 in Utah
- PHOTO-ENUM Robert Mentyka, M.D. · 2006
Eric Chenworth, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
46 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Eric Chenworth, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Eric Chenworth, DO?
Quality data not reportedPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
46 94% vs specialty avg
Specialty distribution in Utah
How Allergy & Immunology Physician compares to other specialties among Utah 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 Allergy & Immunology Physician. 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).
Practice Address
Provider Details
| NPI | 1700859907 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 02/08/2006 |
Brand vs generic prescribing mix · Above average
Eric Chenworth, DO - brand share 37.0%
Allergy & Immunology Physician average
37% brand-name claims vs 63% generic, on 46 2024 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 2024.
46
Total Claims
$78K
Total Drug Cost
14
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 69.667
- Total Day Supply
- 1,903
- Brand vs Generic
- 37% brand / 63% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $72K
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 1.43
Allergy & Immunology Physician Overview
How Eric Chenworth, DO fits within the Allergy & Immunology Physician landscape nationally.
3,412
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
788
Avg Claims per Provider
Eric Chenworth, DO's 46 claims are below the specialty average of 788.
Nationwide Allergy & Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Chenworth, both outside Utah so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Allergy & Immunology Physician Providers in Utah
Other clinicians with the same primary specialty enrolled in Utah, drawn from the same CMS NPPES roster as Chenworth.
One of 22 Allergy & Immunology Physician providers enrolled in Utah, 5 are shown here.
Dr. Jaron Abbott
MD
Provo, UT
Dr. Joseph Anderson
M.D.
Ogden, UT
Dr. Justin Babbel
DO
Orem, UT
Dr. Alan Bitner
M.D.
Salt Lake City, UT
Dr. Stephen Boden
M.D.
Bountiful, UT
Compare Allergy & Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Eric Chenworth, DO's specialty? ▼
Eric Chenworth, DO specializes in Allergy & Immunology Physician and practices in Riverton, Utah. Credentials: DO.
How much does Eric Chenworth, DO prescribe under Medicare Part D? ▼
In 2024, Eric Chenworth, DO wrote 46 Medicare Part D claims totaling $78K in drug costs for 14 beneficiaries.
Where is Eric Chenworth, DO located? ▼
Eric Chenworth, DO is located at 13348 S MARKET CENTER DR, Riverton, UT, 84065. Phone: (385) 290-1289.
What is Eric Chenworth, DO's NPI number? ▼
Eric Chenworth, DO's National Provider Identifier (NPI) is 1700859907, issued on 02/08/2006.
Does Eric Chenworth, DO prescribe more brand-name or generic drugs? ▼
Eric Chenworth, DO's prescribing is 37% brand-name and 63% generic drugs by claim count, with $6K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,412 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 788 Medicare Part D claims per year.
Does Eric Chenworth, DO accept Medicare? ▼
Eric Chenworth, DO appears in CMS Medicare data with 46 Part D claims and 14 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Chenworth, DO's credentials? ▼
Eric Chenworth, DO's NPI is 1700859907 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.