2026 NPPES data Specialist NPI 1285623819 MD
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CARL DETTWILER, MD

Specialist in LEWISTON, Idaho. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 388 beneficiaries · Specialist avg: 1K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$259.54
4 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CARL DETTWILER, MD is a Specialist ([object Object]) practicing in LEWISTON, Idaho with a Medicare Part D prescribing footprint of 1K claims across 388 beneficiaries — 10% brand-name prescribing . Industry payments of $259.54 across 4 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CARL DETTWILER, MD filed 1,315 Medicare Part D claims in 2023 across LEWISTON, Idaho. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CARL DETTWILER, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/17/2005

NPI 1285623819

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

1,315 11% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Idaho

How Specialist compares to other specialties among Idaho providers

Idaho providers

Specialist share within Idaho

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Idaho

Specialty board-certification context

Estimated specialty board-certified rate — Specialist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Specialist ABMS/AOA estimate

Est. board-certified rate (Specialist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Specialist) — ABMS / AOA estimate

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).

CARL DETTWILER, MD is a Specialist provider practicing in LEWISTON, Idaho, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1285623819. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CARL DETTWILER, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 2517 17TH SREET, LEWISTON, ID, 83501, with a listed phone of (208) 743-4373. NPI 1285623819 was issued on 10/17/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DETTWILER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,315 prescription claims written by this provider, covering 388 Medicare beneficiaries and totaling roughly $808K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

2517 17TH SREET
LEWISTON, ID 83501

Provider Details

NPI 1285623819
Specialty Specialist
Credentials MD
Gender Male
NPI Issued 10/17/2005

Hospital and facility affiliations

Facilities where CARL DETTWILER, MD 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.

CLEARWATER GASTROENTEROLOGY
CLARKSTON, WA

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 CARL DETTWILER, MD. Source: openpaymentsdata.cms.gov.

Total received

$260

Largest payer

Janssen Biotech, 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

CARL DETTWILER, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 1,315 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.

1,315
Total Claims
$808K
Total Drug Cost
388
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,770
Total Day Supply
49,131
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$745K
Generic Drug Cost
$63K
Antibiotic Claims
16

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.00
Gender Split
62% female / 38% male
Age Distribution
<65: 57, 65-74: 191, 75-84: 113, 85+: 27

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Omeprazole
508
Pantoprazole Sodium
291
Lansoprazole
62
Sucralfate
36
Mesalamine
35
Azathioprine
31
Famotidine
27
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
18
Linzess
Linaclotide
16
Budesonide Dr
Budesonide
15

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

Specialist Overview

How CARL DETTWILER, MD fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

CARL DETTWILER, MD's 1,315 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Idaho

Other clinicians with the same primary specialty enrolled in Idaho, drawn from the same CMS NPPES roster as DETTWILER.

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is CARL DETTWILER, MD's specialty?
CARL DETTWILER, MD specializes in Specialist and practices in LEWISTON, Idaho. Credentials: MD.
How much does CARL DETTWILER, MD prescribe under Medicare Part D?
In 2023, CARL DETTWILER, MD wrote 1,315 Medicare Part D claims totaling $808K in drug costs for 388 beneficiaries.
Where is CARL DETTWILER, MD located?
CARL DETTWILER, MD is located at 2517 17TH SREET, LEWISTON, ID, 83501. Phone: (208) 743-4373.
What is CARL DETTWILER, MD's NPI number?
CARL DETTWILER, MD's National Provider Identifier (NPI) is 1285623819, issued on 10/17/2005.
Does CARL DETTWILER, MD prescribe more brand-name or generic drugs?
CARL DETTWILER, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $745K in brand drug costs.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does CARL DETTWILER, MD prescribe most often?
Based on 2023 Medicare Part D data, CARL DETTWILER, MD's most frequently prescribed drugs include Omeprazole, Pantoprazole Sodium, Lansoprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CARL DETTWILER, MD accept Medicare?
CARL DETTWILER, MD appears in CMS Medicare data with 1,315 Part D claims and 388 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CARL DETTWILER, MD's credentials?
CARL DETTWILER, MD's NPI is 1285623819 with credentials MD. 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

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