NPI registry status
Active
2026 NPPES data Adolescent Medicine (Internal Medicine) Physician NPI 1982658118 M.D.
Verify on CMS → Mariano Rosales, M.D.
Adolescent Medicine (Internal Medicine) Physician in Waupun, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 375 in Adolescent Medicine (Internal 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
1K
Medicare Part D claims · 76 beneficiaries · Adolescent Medicine (Internal Medicine) Physician avg: 3K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Mariano Rosales, M.D. filed 1,381 Medicare Part D claims in 2023 as an Adolescent Medicine (Internal Medicine) Physician in Waupun, Wisconsin, prescribing 82% generic.
- 1K
- Part D claims, 2023
- 82%
- generic prescribing
- ≥79th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1982658118 · Adolescent Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1982658118
- ENUM-LEGACY 2006
- TAX-TRACE 375
- RX-MID 1,381
- BOOK-THIN 5 in Wisconsin
- PHOTO-ENUM Shirley Tansiongco · 2006
Mariano Rosales, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,381 ≥ 79th percentile 79% of 1,370,886 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Mariano Rosales, M.D. 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).
What does the federal data show about Mariano Rosales, M.D.?
Quality data not reportedPrimary specialty
Adolescent Medicine (Internal Medicine) Physician
Medicare Part D claims
1,381 57% vs specialty avg
Specialty distribution in Wisconsin
How Adolescent Medicine (Internal Medicine) Physician compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Adolescent Medicine (Internal Medicine) Physician. Verify directly:
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
Provider Details
| NPI | 1982658118 |
|---|---|
| Specialty | Adolescent Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/20/2006 |
Brand vs generic prescribing mix · Typical
Mariano Rosales, M.D. - brand share 16.0%
Adolescent Medicine (Internal Medicine) Physician average
16% brand-name claims vs 82% generic, on 1,381 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.
1,381
Total Claims
$132K
Total Drug Cost
76
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,955
- Total Day Supply
- 86,340
- Brand vs Generic
- 16% brand / 82% generic
- Brand Drug Cost
- $106K
- Generic Drug Cost
- $24K
- Opioid Claims
- 34 (2.5% rate)
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 78.9 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 0, 65-74: 23, 75-84: 32, 85+: 21
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mariano Rosales, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
119 claims
- Metoprolol Tartrate
Metoprolol Tartrate
64 claims
- Metoprolol Succinate
Metoprolol Succinate
53 claims
- Losartan Potassium
Losartan Potassium
52 claims
- Metformin Hcl 46
Metformin Hcl
46 claims
- Losartan-Hydrochlo… 45
Losartan-Hydrochlorothiazide
45 claims
- Levothyroxine Sodium 35
Levothyroxine Sodium
35 claims
- Furosemide 34
Furosemide
34 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 119 |
| Metoprolol Tartrate | 64 |
| Metoprolol Succinate | 53 |
| Losartan Potassium | 52 |
| Metformin Hcl | 46 |
| Losartan-Hydrochlorothiazide Losartan/Hydrochlorothiazide | 45 |
| Levothyroxine Sodium | 35 |
| Furosemide | 34 |
| Omeprazole | 29 |
| Amlodipine Besylate | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Adolescent Medicine (Internal Medicine) Physician in WI →
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Adolescent Medicine (Internal Medicine) Physician Overview
How Mariano Rosales, M.D. fits within the Adolescent Medicine (Internal Medicine) Physician landscape nationally.
375
Adolescent Medicine (Internal Medicine) Physician Providers in US
46
States with Adolescent Medicine (Internal Medicine) Physician
3,242
Avg Claims per Provider
Mariano Rosales, M.D.'s 1,381 claims are below the specialty average of 3,242.
Nationwide Adolescent Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Rosales, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adolescent Medicine (Internal Medicine) Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Rosales.
One of 5 Adolescent Medicine (Internal Medicine) Physician providers enrolled in Wisconsin, 4 are shown here.
Frequently Asked Questions
What is Mariano Rosales, M.D.'s specialty? ▼
Mariano Rosales, M.D. specializes in Adolescent Medicine (Internal Medicine) Physician and practices in Waupun, Wisconsin. Credentials: M.D..
How much does Mariano Rosales, M.D. prescribe under Medicare Part D? ▼
In 2023, Mariano Rosales, M.D. wrote 1,381 Medicare Part D claims totaling $132K in drug costs for 76 beneficiaries.
Where is Mariano Rosales, M.D. located? ▼
Mariano Rosales, M.D. is located at 600 FERN ST, Waupun, WI, 53963. Phone: (920) 324-3559.
What is Mariano Rosales, M.D.'s NPI number? ▼
Mariano Rosales, M.D.'s National Provider Identifier (NPI) is 1982658118, issued on 05/20/2006.
Does Mariano Rosales, M.D. prescribe more brand-name or generic drugs? ▼
Mariano Rosales, M.D.'s prescribing is 16% brand-name and 82% generic drugs by claim count, with $106K in brand drug costs.
Does Mariano Rosales, M.D. prescribe opioids? ▼
Yes, Mariano Rosales, M.D. had 34 opioid claims in 2023 with an opioid prescribing rate of 2.5%.
How many Adolescent Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 375 Adolescent Medicine (Internal Medicine) Physician providers across 46 states in the US. The average Adolescent Medicine (Internal Medicine) Physician provider writes 3,242 Medicare Part D claims per year.
What drugs does Mariano Rosales, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mariano Rosales, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Tartrate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mariano Rosales, M.D. accept Medicare? ▼
Mariano Rosales, M.D. appears in CMS Medicare data with 1,381 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mariano Rosales, M.D.'s credentials? ▼
Mariano Rosales, M.D.'s NPI is 1982658118 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 (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
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 May 2026.