2026 NPPES data Internal Medicine Physician NPI 1699746859 MD
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BARBARA DAVIS, MD

Internal Medicine Physician 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
6K
Medicare Part D claims · 283 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$42.44
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BARBARA DAVIS, MD filed 6,200 Medicare Part D claims in 2023 as a Internal Medicine Physician in LEWISTON, Idaho, prescribing 89% generic.

6K
Part D claims, 2023
89%
generic prescribing
$42.44
industry payments (Sunshine Act)

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.

BARBARA DAVIS, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

6,200 Top 5% higher than 95% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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-eligible specialty (heuristic — not verified)

BARBARA DAVIS, MD 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 BARBARA DAVIS, MD?

Quality data not reported

NPI registry status

Active

Issued 01/27/2006

NPI 1699746859

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,200 128% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Idaho

How Internal Medicine Physician compares to other specialties among Idaho providers

Idaho providers

Internal Medicine Physician share within Idaho

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Idaho

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

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

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — 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).

BARBARA DAVIS, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 415 6TH ST STE 3C, LEWISTON, ID, 83501, with a listed phone of (208) 746-1333. NPI 1699746859 was issued on 01/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DAVIS 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 6,200 prescription claims written by this provider, covering 283 Medicare beneficiaries and totaling roughly $468K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 6.8%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

415 6TH ST STE 3C
LEWISTON, ID 83501

Provider Details

NPI 1699746859
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 01/27/2006

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 BARBARA DAVIS, MD. Source: openpaymentsdata.cms.gov.

Total received

$42

Largest payer

Lundbeck LLC

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

BARBARA DAVIS, MD — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 6,200 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.

6,200
Total Claims
$468K
Total Drug Cost
283
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,220
Total Day Supply
355,755
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$350K
Generic Drug Cost
$115K
Opioid Claims
420 (6.8% rate)
Antibiotic Claims
149

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.07
Gender Split
71% female / 29% male
Age Distribution
<65: 14, 65-74: 103, 75-84: 114, 85+: 52

Top Prescribed Drugs (Medicare Part D)

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

What BARBARA DAVIS, MD 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
Levothyroxine Sodium
355
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
248
Atorvastatin Calcium
237
Omeprazole
203
Amlodipine Besylate
200
Simvastatin
173
Gabapentin
147
Alprazolam
133
Losartan Potassium
129
Trazodone Hcl
111

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

Internal Medicine Physician Overview

How BARBARA DAVIS, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

BARBARA DAVIS, MD's 6,200 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Idaho

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

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

Frequently Asked Questions

What is BARBARA DAVIS, MD's specialty?
BARBARA DAVIS, MD specializes in Internal Medicine Physician and practices in LEWISTON, Idaho. Credentials: MD.
How much does BARBARA DAVIS, MD prescribe under Medicare Part D?
In 2023, BARBARA DAVIS, MD wrote 6,200 Medicare Part D claims totaling $468K in drug costs for 283 beneficiaries.
Where is BARBARA DAVIS, MD located?
BARBARA DAVIS, MD is located at 415 6TH ST STE 3C, LEWISTON, ID, 83501. Phone: (208) 746-1333.
What is BARBARA DAVIS, MD's NPI number?
BARBARA DAVIS, MD's National Provider Identifier (NPI) is 1699746859, issued on 01/27/2006.
Does BARBARA DAVIS, MD prescribe more brand-name or generic drugs?
BARBARA DAVIS, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $350K in brand drug costs.
Does BARBARA DAVIS, MD prescribe opioids?
Yes, BARBARA DAVIS, MD had 420 opioid claims in 2023 with an opioid prescribing rate of 6.8%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does BARBARA DAVIS, MD prescribe most often?
Based on 2023 Medicare Part D data, BARBARA DAVIS, MD's most frequently prescribed drugs include Levothyroxine Sodium, Hydrocodone-Acetaminophen, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BARBARA DAVIS, MD accept Medicare?
BARBARA DAVIS, MD appears in CMS Medicare data with 6,200 Part D claims and 283 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BARBARA DAVIS, MD's credentials?
BARBARA DAVIS, MD's NPI is 1699746859 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