2026 NPPES data Registered Nurse NPI 1003484015
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MARIBEL ALVAREZ

Registered Nurse in MUNSTER, 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
277
Medicare Part D claims · 45 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$15.24
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARIBEL ALVAREZ filed 277 Medicare Part D claims in 2023 as a Registered Nurse in MUNSTER, Indiana, prescribing 81% generic.

277
Part D claims, 2023
81%
generic prescribing
$15.24
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.

MARIBEL ALVAREZ's Medicare Part D volume vs every U.S. prescriber

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

277 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 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

What does the federal data show about MARIBEL ALVAREZ?

Quality data not reported

NPI registry status

Active

Issued 06/15/2021

NPI 1003484015

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

277 72% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in Indiana

How Registered Nurse compares to other specialties among Indiana providers

Indiana providers

Registered Nurse share within Indiana

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Indiana

Specialty board-certification context

Estimated specialty board-certified rate — Registered Nurse (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Registered Nurse ABMS/AOA estimate

Est. board-certified rate (Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Registered Nurse) — 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).

MARIBEL ALVAREZ appears in the CMS NPPES registry as a Registered Nurse provider at 8135 CALUMET AVE, MUNSTER, IN, 46321, with a listed phone of (219) 513-2000. NPI 1003484015 was issued on 06/15/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALVAREZ 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 277 prescription claims written by this provider, covering 45 Medicare beneficiaries and totaling roughly $16K in drug spend, split 19% brand-name and 81% 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.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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

8135 CALUMET AVE
MUNSTER, IN 46321

Provider Details

NPI 1003484015
Specialty Registered Nurse
Gender Female
NPI Issued 06/15/2021

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 MARIBEL ALVAREZ. Source: openpaymentsdata.cms.gov.

Total received

$15

Largest payer

Otsuka America Pharmaceutical, Inc.

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

MARIBEL ALVAREZ — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 277 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.

277
Total Claims
$16K
Total Drug Cost
45
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
279
Total Day Supply
5,152
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$11K
Generic Drug Cost
$5K
Antibiotic Claims
30

Patient Demographics

Average Patient Age
78.7 years
Avg HCC Risk Score
4.48
Gender Split
67% female / 33% male

Top Prescribed Drugs (Medicare Part D)

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

What MARIBEL ALVAREZ 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
Eliquis
Apixaban
30
Pantoprazole Sodium
22
Losartan Potassium
15
Fluticasone Propionate
14
Atorvastatin Calcium
11
Gabapentin
11
Lokelma
Sodium Zirconium Cyclosilicate
11

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

Registered Nurse Overview

How MARIBEL ALVAREZ fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

MARIBEL ALVAREZ's 277 claims are below the specialty average of 1,000.

Nearby Registered Nurse Providers in Indiana

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

Compare Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIBEL ALVAREZ's specialty?
MARIBEL ALVAREZ specializes in Registered Nurse and practices in MUNSTER, Indiana.
How much does MARIBEL ALVAREZ prescribe under Medicare Part D?
In 2023, MARIBEL ALVAREZ wrote 277 Medicare Part D claims totaling $16K in drug costs for 45 beneficiaries.
Where is MARIBEL ALVAREZ located?
MARIBEL ALVAREZ is located at 8135 CALUMET AVE, MUNSTER, IN, 46321. Phone: (219) 513-2000.
What is MARIBEL ALVAREZ's NPI number?
MARIBEL ALVAREZ's National Provider Identifier (NPI) is 1003484015, issued on 06/15/2021.
Does MARIBEL ALVAREZ prescribe more brand-name or generic drugs?
MARIBEL ALVAREZ's prescribing is 19% brand-name and 81% generic drugs by claim count, with $11K in brand drug costs.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does MARIBEL ALVAREZ prescribe most often?
Based on 2023 Medicare Part D data, MARIBEL ALVAREZ's most frequently prescribed drugs include Eliquis, Pantoprazole Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIBEL ALVAREZ accept Medicare?
MARIBEL ALVAREZ appears in CMS Medicare data with 277 Part D claims and 45 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIBEL ALVAREZ's credentials?
MARIBEL ALVAREZ's NPI is 1003484015. 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