2026 NPPES data Internal Medicine Physician NPI 1588620959 MD
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JANET ARNO, MD

Internal Medicine Physician in INDIANAPOLIS, 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
321
Medicare Part D claims · 32 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
44%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JANET ARNO, MD is a Internal Medicine Physician ([object Object]) practicing in INDIANAPOLIS, Indiana with a Medicare Part D prescribing footprint of 321 claims across 32 beneficiaries — 56% brand-name prescribing .

What stands out: JANET ARNO, MD filed 321 Medicare Part D claims in 2023 across INDIANAPOLIS, Indiana. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JANET ARNO, 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).

JANET ARNO, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/25/2006

NPI 1588620959

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

321 88% 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).

JANET ARNO, MD is a Internal Medicine Physician provider practicing in INDIANAPOLIS, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1588620959. 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.

JANET ARNO, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 1701 N SENATE BLVD, INDIANAPOLIS, IN, 46202, with a listed phone of (317) 962-2000. NPI 1588620959 was issued on 04/25/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARNO 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 321 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $766K in drug spend, split 56% brand-name and 44% 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

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Provider Details

NPI 1588620959
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 04/25/2006

Brand vs generic prescribing mix · Brand-heavy

JANET ARNO, MD — brand share 56.0%
Specialty average (est.)

56% brand-name claims vs 44% generic, on 321 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.

321
Total Claims
$766K
Total Drug Cost
32
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
415
Total Day Supply
11,864
Brand vs Generic
56% brand / 44% generic
Brand Drug Cost
$749K
Generic Drug Cost
$17K
Antibiotic Claims
35

Patient Demographics

Average Patient Age
64.6 years
Avg HCC Risk Score
2.31
Gender Split
44% female / 56% male
Age Distribution
<65: 13, 65-74: 14, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Biktarvy
Bictegrav/Emtricit/Tenofov Ala
68
Triumeq
Abacavir/Dolutegravir/Lamivudi
45
Genvoya
Elviteg/Cob/Emtri/Tenof Alafen
23
Azithromycin
12
Fluticasone Propionate
12
Metformin Hcl Er
Metformin Hcl
12
Symtuza
Darunavir/Cob/Emtri/Tenof Alaf
12
Efavirenz-Emtric-Tenofov Disop
Efavirenz/Emtricit/Tenofovr Df
11

* 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 JANET ARNO, 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

JANET ARNO, MD's 321 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 ARNO.

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

Frequently Asked Questions

What is JANET ARNO, MD's specialty?
JANET ARNO, MD specializes in Internal Medicine Physician and practices in INDIANAPOLIS, Indiana. Credentials: MD.
How much does JANET ARNO, MD prescribe under Medicare Part D?
In 2023, JANET ARNO, MD wrote 321 Medicare Part D claims totaling $766K in drug costs for 32 beneficiaries.
Where is JANET ARNO, MD located?
JANET ARNO, MD is located at 1701 N SENATE BLVD, INDIANAPOLIS, IN, 46202. Phone: (317) 962-2000.
What is JANET ARNO, MD's NPI number?
JANET ARNO, MD's National Provider Identifier (NPI) is 1588620959, issued on 04/25/2006.
Does JANET ARNO, MD prescribe more brand-name or generic drugs?
JANET ARNO, MD's prescribing is 56% brand-name and 44% generic drugs by claim count, with $749K 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 JANET ARNO, MD prescribe most often?
Based on 2023 Medicare Part D data, JANET ARNO, MD's most frequently prescribed drugs include Biktarvy, Triumeq, Genvoya. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JANET ARNO, MD accept Medicare?
JANET ARNO, MD appears in CMS Medicare data with 321 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JANET ARNO, MD's credentials?
JANET ARNO, MD's NPI is 1588620959 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