2026 NPPES data Internal Medicine Physician NPI 1861401507 MD
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Amir Tirmizi, MD

Internal Medicine Physician in Lafayette, Indiana. 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
592
Medicare Part D claims · 94 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
63%
generic claims · 37% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Amir Tirmizi, MD filed 592 Medicare Part D claims in 2023 as a Internal Medicine Physician in Lafayette, Indiana, prescribing 63% generic.

592
Part D claims, 2023
63%
generic prescribing
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.

Amir Tirmizi, MD's Medicare Part D volume vs every U.S. prescriber

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

592 Top 34% higher than 66% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 certification likely (heuristic — not verified)

Amir Tirmizi, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 Amir Tirmizi, MD?

Quality data not reported

NPI registry status

Active

Issued 08/05/2006

NPI 1861401507

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

592 78% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Indiana

How Internal Medicine Physician compares to other specialties among Indiana providers

Indiana providers

Internal Medicine Physician share within Indiana

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

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).

Amir Tirmizi, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 5165 MCCARTY LN, Lafayette, IN, 47905, with a listed phone of (765) 448-8000. NPI 1861401507 was issued on 08/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Tirmizi 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 592 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $864K in drug spend, split 37% brand-name and 63% 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

5165 MCCARTY LN
Lafayette, IN 47905

Provider Details

NPI 1861401507
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/05/2006

Hospital and facility affiliations

Facilities where Amir Tirmizi, 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.

Arnett Clinic LLC
Lafayette, IN
IU Health Medical Group LLC
Muncie, IN

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 · Above average

Amir Tirmizi, MD — brand share 37.0%
Specialty average (est.)

37% brand-name claims vs 63% generic, on 592 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.

592
Total Claims
$864K
Total Drug Cost
94
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
648
Total Day Supply
17,197
Brand vs Generic
37% brand / 63% generic
Brand Drug Cost
$781K
Generic Drug Cost
$83K
Antibiotic Claims
153

Patient Demographics

Average Patient Age
70.1 years
Avg HCC Risk Score
2.24
Gender Split
51% female / 49% male
Age Distribution
<65: 31, 65-74: 28, 75-84: 21, 85+: 14

Top Prescribed Drugs (Medicare Part D)

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

What Amir Tirmizi, 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
Biktarvy
Bictegrav/Emtricit/Tenofov Ala
103
Rifampin
35
Triumeq
Abacavir/Dolutegravir/Lamivudi
35
Isentress
Raltegravir Potassium
33
Ethambutol Hcl
28
Azithromycin
26
Genvoya
Elviteg/Cob/Emtri/Tenof Alafen
24
Minocycline Hcl
24
Abacavir-Lamivudine
Abacavir Sulfate/Lamivudine
21
Efavirenz
19

* 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 Amir Tirmizi, 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

Amir Tirmizi, MD's 592 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Indiana

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

Compare Internal Medicine 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 Indiana medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine 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.

Frequently Asked Questions

What is Amir Tirmizi, MD's specialty?
Amir Tirmizi, MD specializes in Internal Medicine Physician and practices in Lafayette, Indiana. Credentials: MD.
How much does Amir Tirmizi, MD prescribe under Medicare Part D?
In 2023, Amir Tirmizi, MD wrote 592 Medicare Part D claims totaling $864K in drug costs for 94 beneficiaries.
Where is Amir Tirmizi, MD located?
Amir Tirmizi, MD is located at 5165 MCCARTY LN, Lafayette, IN, 47905. Phone: (765) 448-8000.
What is Amir Tirmizi, MD's NPI number?
Amir Tirmizi, MD's National Provider Identifier (NPI) is 1861401507, issued on 08/05/2006.
Does Amir Tirmizi, MD prescribe more brand-name or generic drugs?
Amir Tirmizi, MD's prescribing is 37% brand-name and 63% generic drugs by claim count, with $781K 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 Amir Tirmizi, MD prescribe most often?
Based on 2023 Medicare Part D data, Amir Tirmizi, MD's most frequently prescribed drugs include Biktarvy, Rifampin, Triumeq. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amir Tirmizi, MD accept Medicare?
Amir Tirmizi, MD appears in CMS Medicare data with 592 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amir Tirmizi, MD's credentials?
Amir Tirmizi, MD's NPI is 1861401507 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