2026 NPPES data Internal Medicine Physician NPI 1265425870 MD
Verify on CMS →

LINDSAY BARNES, MD

Internal Medicine Physician in WASHINGTON, District of Columbia. 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
569
Medicare Part D claims · 373 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: LINDSAY BARNES, MD is a Internal Medicine Physician ([object Object]) practicing in WASHINGTON, District of Columbia with a Medicare Part D prescribing footprint of 569 claims across 373 beneficiaries — 16% brand-name prescribing .

What stands out: LINDSAY BARNES, MD filed 569 Medicare Part D claims in 2023 across WASHINGTON, District of Columbia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

LINDSAY BARNES, MD 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).

LINDSAY BARNES, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/30/2005

NPI 1265425870

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

569 79% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in District of Columbia

How Internal Medicine Physician compares to other specialties among District of Columbia providers

District of Columbia providers

Internal Medicine Physician share within District of Columbia

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

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).

LINDSAY BARNES, MD is a Internal Medicine Physician provider practicing in WASHINGTON, District of Columbia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1265425870. 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.

LINDSAY BARNES, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 700 2ND ST NE, WASHINGTON, DC, 20002, with a listed phone of (202) 346-3475. NPI 1265425870 was issued on 08/30/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BARNES 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 569 prescription claims written by this provider, covering 373 Medicare beneficiaries and totaling roughly $91K in drug spend, split 16% brand-name and 84% 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.

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

700 2ND ST NE
WASHINGTON, DC 20002

Provider Details

NPI 1265425870
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 08/30/2005

Hospital and facility affiliations

Facilities where LINDSAY BARNES, 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.

KAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC
LARGO, MD

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

LINDSAY BARNES, MD — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 569 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.

569
Total Claims
$91K
Total Drug Cost
373
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
780
Total Day Supply
13,574
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$77K
Generic Drug Cost
$14K
Antibiotic Claims
24

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
0.90
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pantoprazole Sodium
124
Peg3350-Sod Sul-Nacl-Kcl-Asb-C
Peg3350/Sod Sul/Nacl/Kcl/Asb/C
64
Linzess
Linaclotide
22
Lialda
Mesalamine
11
Gavilyte-C
"Peg3350/Sod Sulf
N/A
Peg-3350 And Electrolytes
"Peg3350/Sod Sulf
N/A

* 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 LINDSAY BARNES, 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

LINDSAY BARNES, MD's 569 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in District of Columbia

Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as BARNES.

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

Frequently Asked Questions

What is LINDSAY BARNES, MD's specialty?
LINDSAY BARNES, MD specializes in Internal Medicine Physician and practices in WASHINGTON, District of Columbia. Credentials: MD.
How much does LINDSAY BARNES, MD prescribe under Medicare Part D?
In 2023, LINDSAY BARNES, MD wrote 569 Medicare Part D claims totaling $91K in drug costs for 373 beneficiaries.
Where is LINDSAY BARNES, MD located?
LINDSAY BARNES, MD is located at 700 2ND ST NE, WASHINGTON, DC, 20002. Phone: (202) 346-3475.
What is LINDSAY BARNES, MD's NPI number?
LINDSAY BARNES, MD's National Provider Identifier (NPI) is 1265425870, issued on 08/30/2005.
Does LINDSAY BARNES, MD prescribe more brand-name or generic drugs?
LINDSAY BARNES, MD's prescribing is 16% brand-name and 84% generic drugs by claim count, with $77K in brand drug costs.
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 LINDSAY BARNES, MD prescribe most often?
Based on 2023 Medicare Part D data, LINDSAY BARNES, MD's most frequently prescribed drugs include Pantoprazole Sodium, Peg3350-Sod Sul-Nacl-Kcl-Asb-C, Linzess. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LINDSAY BARNES, MD accept Medicare?
LINDSAY BARNES, MD appears in CMS Medicare data with 569 Part D claims and 373 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LINDSAY BARNES, MD's credentials?
LINDSAY BARNES, MD's NPI is 1265425870 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