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2026 NPPES data Family Medicine Physician NPI 1609939594 M.D.
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Isidora Nantes, M.D.

Family Medicine Physician in Merrillville, Indiana.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,125 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
9K
Medicare Part D claims · 718 beneficiaries · Family Medicine Physician avg: 4K
Generic prescribing
90%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.6/100
▼ 9 pts below national avg 83.5 · Mid-tier
Industry payments
$1.1K
47 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Isidora Nantes, M.D. reported a CMS MIPS final score of 74.6/100 - below the 83.5 national average - and filed 9,243 Medicare Part D claims in 2024.

74.6/100
MIPS score · -9 vs avg
9K
Part D claims, 2024
90%
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.

Federal trust snapshot

What official records show about Isidora Nantes, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1609939594), first enumerated 12/19/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 9,243 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 74.6/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Industry payment transparency

    $1.1K in reported industry payments (47 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1609939594 · Family Medicine Physician

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-BELOW · RX-MID · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1609939594
  • ENUM-LEGACY 2006
  • TAX-MEGA 150K Family Medicine
  • MIPS-BELOW 74.6/100
  • RX-MID 9,243
  • BOOK-LIGHT 3,367 in Indiana
  • PHOTO-FINISH Aryan Kadivar · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Isidora Nantes, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

75 ≥ 13th percentile 13% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Isidora Nantes, M.D. sits

This provider among family medicine physician peers

Across the 21,266 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Isidora Nantes, M.D. writes more Part D claims than 86% of them and scores higher on MIPS quality than 16% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 37Isidora Nantes, M.D., Part D claim volume, percentile in specialty: 86 · MIPS quality, percentile: 16
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Isidora Nantes, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Isidora Nantes, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Isidora Nantes, M.D.?

Below national average

NPI registry status

Active

Issued 12/19/2006

NPI 1609939594

Primary specialty

Family Medicine Physician

High-volume

150,125 US NPIs in this specialty

Medicare Part D claims

9,243 163% vs specialty avg

2024 prescription claims

Specialty avg: 3,519

MIPS final score

74.6/100 8.9 pts vs avg

Mid-tier band

vs 83.5 national avg

Specialty distribution in Indiana

How Family Medicine Physician compares to other specialties among Indiana providers

Indiana providers
Behavior Technician14.3%Student in an Organized Heal…4.8%Pharmacist4.3%Clinical Social Worker4.2%Family Nurse Practitioner4.2%Mental Health Counselor4.1%Family Medicine Physician2.8%
Largest specialties in Indiana (% of in-state providers)

Medicare quality performance, MIPS

Isidora Nantes, M.D.'s 2023 MIPS final score plotted against the Family Medicine Physician national average

Below national average
MIPS Final Score
74.6/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%74.6%
MIPS final score (Family Medicine Physician) - 74.6/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

751 E 81ST AVE
Merrillville, IN 46410
(219) 791-9476

Provider Details

NPI 1609939594
Specialty Family Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 12/19/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

74.6301
Final Score
Measured-score avg: 83.5
63.0682
Quality
62.4208
Cost

Reporting: Group practice

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 Isidora Nantes, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.1K

Largest payer

ABIOMED

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 · Generic-heavy

Isidora Nantes, M.D. - brand share 9.0%
Family Medicine Physician average

9% brand-name claims vs 90% generic, on 9,243 2024 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 2024.

9,243
Total Claims
$640K
Total Drug Cost
718
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
22,461.333
Total Day Supply
662,732
Brand vs Generic
9% brand / 90% generic
Brand Drug Cost
$516K
Generic Drug Cost
$116K
Opioid Claims
479 (5.2% rate)
Antibiotic Claims
169

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.19
Gender Split
65% female / 35% male
Age Distribution
<65: 38, 65-74: 342, 75-84: 244, 85+: 94

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Isidora Nantes, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Atorvastatin Calcium
 842
Amlodipine Besylate
 444
Metformin Hcl
 360
Alprazolam
 298
Levothyroxine Sodium
 270
Valsartan-Hydrochlorothiazide
Valsartan/Hydrochlorothiazide
249
Pantoprazole Sodium
 238
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
233
Metoprolol Succinate
 200
Furosemide
 195

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

More Family Medicine Physician in IN → All providers in Indiana → Compare specialties →

Family Medicine Physician Overview

How Isidora Nantes, M.D. fits within the Family Medicine Physician landscape nationally.

150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider

Isidora Nantes, M.D.'s 9,243 claims are above the specialty average of 3,519.

Nationwide Family Medicine Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Nantes, both outside Indiana so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (74.6 here).

Aryan Kadivar 74.6 OK Claude Gilbreath 74.7 LA Brittany Hattier 74.7 LA John Walker 74.7 LA

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Soon Kwark Raleigh, NC Christian Okezie Chicago, IL Naheed Esmail Bellevue, WA Bradley Gilman Cascade, ID

Nearby Family Medicine Physician Providers in Indiana

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

One of 3,367 Family Medicine Physician providers enrolled in Indiana, 5 are shown here.

Dr. Faryaal Aamir
MD
Boonville, IN
Dr. Melody Abadpour
MD
Lafayette, IN
Dr. Troy Abbott
MD
Muncie, IN
Dr. Musa Abdalla
M. D.
Lagrange, IN
Dr. Azra Abdullah
M.D.
Indianapolis, IN

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

Frequently Asked Questions

What is Isidora Nantes, M.D.'s specialty? ▼
Isidora Nantes, M.D. specializes in Family Medicine Physician and practices in Merrillville, Indiana. Credentials: M.D..
How much does Isidora Nantes, M.D. prescribe under Medicare Part D? ▼
In 2024, Isidora Nantes, M.D. wrote 9,243 Medicare Part D claims totaling $640K in drug costs for 718 beneficiaries.
What is Isidora Nantes, M.D.'s Medicare quality score? ▼
Isidora Nantes, M.D. has a CMS MIPS Final Score of 74.6/100 (Quality: 63.1, Cost: 62.4). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Isidora Nantes, M.D. located? ▼
Isidora Nantes, M.D. is located at 751 E 81ST AVE, Merrillville, IN, 46410. Phone: (219) 791-9476.
What is Isidora Nantes, M.D.'s NPI number? ▼
Isidora Nantes, M.D.'s National Provider Identifier (NPI) is 1609939594, issued on 12/19/2006.
Does Isidora Nantes, M.D. prescribe more brand-name or generic drugs? ▼
Isidora Nantes, M.D.'s prescribing is 9% brand-name and 90% generic drugs by claim count, with $516K in brand drug costs.
Does Isidora Nantes, M.D. prescribe opioids? ▼
Yes, Isidora Nantes, M.D. had 479 opioid claims in 2024 with an opioid prescribing rate of 5.2%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Isidora Nantes, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Isidora Nantes, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Isidora Nantes, M.D. accept Medicare? ▼
Isidora Nantes, M.D. appears in CMS Medicare data with 9,243 Part D claims and 718 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Isidora Nantes, M.D.'s credentials? ▼
Isidora Nantes, M.D.'s NPI is 1609939594 with credentials M.D.. 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

View source datasets and methodology notes
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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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 August 2026 (NPPES) / 2024 (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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.