NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1831204288 DO
Verify on CMS → Chuck Colas, DO
General Practice Physician in Lewiston, Idaho.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,725 in General Practice 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
2K
Medicare Part D claims · 219 beneficiaries · General Practice Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Chuck Colas, DO filed 2,428 Medicare Part D claims in 2023 as a General Practice Physician in Lewiston, Idaho.
- 2K
- Part D claims, 2023
- 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.
Chuck Colas, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,428 Top 14% higher than 86% 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
✓
Board certification likely (heuristic, not verified)
Chuck Colas, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Chuck Colas, DO?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
2,428 15% vs specialty avg
Specialty distribution in Idaho
How General Practice Physician compares to other specialties among Idaho 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 General Practice 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).
Chuck Colas, DO appears in the CMS NPPES registry as a General Practice Physician provider holding DO credentials at 2315 8TH ST, Lewiston, ID, 83501, with a listed phone of (208) 746-1383. NPI 1831204288 was issued on 08/19/2006.
Medicare Part D records for calendar year 2023 show 2,428 prescription claims written by this provider, covering 219 Medicare beneficiaries and totaling roughly $215K in drug spend, with an opioid prescribing rate of 17.5%.
General Practice Physician is a mid-sized specialty nationwide, with 16,725 enrolled providers across 56 states and an average of 2,872 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 | 1831204288 |
|---|---|
| Specialty | General Practice Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 08/19/2006 |
Hospital and facility affiliations
Facilities where Chuck Colas, DO 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.
St Joseph Hospital LLC
Lewiston, ID
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,428
Total Claims
$215K
Total Drug Cost
219
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,544
- Total Day Supply
- 132,625
- Generic Drug Cost
- $89K
- Opioid Claims
- 425 (17.5% rate)
- Antibiotic Claims
- 59
Patient Demographics
- Average Patient Age
- 70.2 years
- Avg HCC Risk Score
- 0.90
- Gender Split
- 53% female / 47% male
- Age Distribution
- <65: 39, 65-74: 105, 75-84: 64, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Chuck Colas, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
257 claims
- Omeprazole 93
Omeprazole
93 claims
- Lisinopril 84
Lisinopril
84 claims
- Levothyroxine Sodium 83
Levothyroxine Sodium
83 claims
- Gabapentin 72
Gabapentin
72 claims
- Atorvastatin Calcium 70
Atorvastatin Calcium
70 claims
- Amlodipine Besylate 53
Amlodipine Besylate
53 claims
- Clonazepam 49
Clonazepam
49 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 257 |
| Omeprazole | 93 |
| Lisinopril | 84 |
| Levothyroxine Sodium | 83 |
| Gabapentin | 72 |
| Atorvastatin Calcium | 70 |
| Amlodipine Besylate | 53 |
| Clonazepam | 49 |
| Tramadol Hcl | 49 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 47 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Chuck Colas, DO fits within the General Practice Physician landscape nationally.
16,725
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider
Chuck Colas, DO's 2,428 claims are below the specialty average of 2,872.
Nearby General Practice Physician Providers in Idaho
Other clinicians with the same primary specialty enrolled in Idaho, drawn from the same CMS NPPES roster as Colas.
Dr. Patty Ackerman
DNP, CNM, APRN
Grace, ID
Dr. J Thomas Ahlquist
MD
Boise, ID
Dr. Sarai Ambert-Pompey
MD
Boise, ID
Lanie Benson
Driggs, ID
Dr. Kenneth Blackner
M.D.
Shelley, ID
Compare General Practice Physician 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 Idaho medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby General Practice Physician 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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Explore Idaho
Frequently Asked Questions
What is Chuck Colas, DO's specialty? ▼
Chuck Colas, DO specializes in General Practice Physician and practices in Lewiston, Idaho. Credentials: DO.
How much does Chuck Colas, DO prescribe under Medicare Part D? ▼
In 2023, Chuck Colas, DO wrote 2,428 Medicare Part D claims totaling $215K in drug costs for 219 beneficiaries.
Where is Chuck Colas, DO located? ▼
Chuck Colas, DO is located at 2315 8TH ST, Lewiston, ID, 83501. Phone: (208) 746-1383.
What is Chuck Colas, DO's NPI number? ▼
Chuck Colas, DO's National Provider Identifier (NPI) is 1831204288, issued on 08/19/2006.
Does Chuck Colas, DO prescribe opioids? ▼
Yes, Chuck Colas, DO had 425 opioid claims in 2023 with an opioid prescribing rate of 17.5%.
How many General Practice Physician providers are there in the US? ▼
There are 16,725 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does Chuck Colas, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Chuck Colas, DO's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Omeprazole, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Chuck Colas, DO accept Medicare? ▼
Chuck Colas, DO appears in CMS Medicare data with 2,428 Part D claims and 219 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chuck Colas, DO's credentials? ▼
Chuck Colas, DO's NPI is 1831204288 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.
- 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.
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.