2026 NPPES data Specialist NPI 1912971029 MD
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ARIA ARRIZABALAGA, MD

Specialist 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
1K
Medicare Part D claims · 104 beneficiaries · Specialist avg: 1K
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ARIA ARRIZABALAGA, MD is a Specialist ([object Object]) practicing in INDIANAPOLIS, Indiana with a Medicare Part D prescribing footprint of 1K claims across 104 beneficiaries — 25% brand-name prescribing .

What stands out: ARIA ARRIZABALAGA, MD filed 1,141 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.

ARIA ARRIZABALAGA, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/15/2006

NPI 1912971029

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

1,141 23% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Indiana

How Specialist compares to other specialties among Indiana providers

Indiana providers

Specialist share within Indiana

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

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).

ARIA ARRIZABALAGA, MD is a Specialist provider practicing in INDIANAPOLIS, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1912971029. 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.

ARIA ARRIZABALAGA, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 10122 E. 10TH STREET, INDIANAPOLIS, IN, 46229, with a listed phone of (317) 355-5717. NPI 1912971029 was issued on 02/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARRIZABALAGA 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 1,141 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $288K in drug spend, split 25% brand-name and 75% 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

10122 E. 10TH STREET
INDIANAPOLIS, IN 46229

Provider Details

NPI 1912971029
Specialty Specialist
Credentials MD
Gender Female
NPI Issued 02/15/2006

Hospital and facility affiliations

Facilities where ARIA ARRIZABALAGA, 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.

COMMUNITY PHYSICIANS OF INDIANA INC
INDIANAPOLIS, 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

ARIA ARRIZABALAGA, MD — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 1,141 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.

1,141
Total Claims
$288K
Total Drug Cost
104
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,431
Total Day Supply
70,307
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$266K
Generic Drug Cost
$20K
Antibiotic Claims
15

Patient Demographics

Average Patient Age
67.5 years
Avg HCC Risk Score
1.98
Gender Split
67% female / 33% male
Age Distribution
<65: 34, 65-74: 46, 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
Atorvastatin Calcium
91
Ozempic
Semaglutide
50
Losartan Potassium
47
Amlodipine Besylate
41
Metformin Hcl
41
Lisinopril
37
Symbicort
Budesonide/Formoterol Fumarate
34
Metformin Hcl Er
Metformin Hcl
29
Montelukast Sodium
28
Shingrix
Varicella-Zoster Ge/As01b/Pf
28

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

Specialist Overview

How ARIA ARRIZABALAGA, MD fits within the Specialist landscape nationally.

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

ARIA ARRIZABALAGA, MD's 1,141 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Indiana

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

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

Frequently Asked Questions

What is ARIA ARRIZABALAGA, MD's specialty?
ARIA ARRIZABALAGA, MD specializes in Specialist and practices in INDIANAPOLIS, Indiana. Credentials: MD.
How much does ARIA ARRIZABALAGA, MD prescribe under Medicare Part D?
In 2023, ARIA ARRIZABALAGA, MD wrote 1,141 Medicare Part D claims totaling $288K in drug costs for 104 beneficiaries.
Where is ARIA ARRIZABALAGA, MD located?
ARIA ARRIZABALAGA, MD is located at 10122 E. 10TH STREET, INDIANAPOLIS, IN, 46229. Phone: (317) 355-5717.
What is ARIA ARRIZABALAGA, MD's NPI number?
ARIA ARRIZABALAGA, MD's National Provider Identifier (NPI) is 1912971029, issued on 02/15/2006.
Does ARIA ARRIZABALAGA, MD prescribe more brand-name or generic drugs?
ARIA ARRIZABALAGA, MD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $266K 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 ARIA ARRIZABALAGA, MD prescribe most often?
Based on 2023 Medicare Part D data, ARIA ARRIZABALAGA, MD's most frequently prescribed drugs include Atorvastatin Calcium, Ozempic, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ARIA ARRIZABALAGA, MD accept Medicare?
ARIA ARRIZABALAGA, MD appears in CMS Medicare data with 1,141 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ARIA ARRIZABALAGA, MD's credentials?
ARIA ARRIZABALAGA, MD's NPI is 1912971029 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