NPI registry status
Active
2026 NPPES data Nephrology Physician NPI 1497995690 M.D.
Verify on CMS → Carlos Machado, M.D.
Nephrology Physician in Newark, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,534 in Nephrology 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 · 212 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$588.85
22 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carlos Machado, M.D. filed 1,157 Medicare Part D claims in 2023 as a Nephrology Physician in Newark, Delaware, prescribing 85% generic.
- 1K
- Part D claims, 2023
- 85%
- 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.
Carlos Machado, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,157 Top 23% higher than 77% of 1,370,886 prescribers
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
✓
Board certification likely (heuristic, not verified)
Carlos Machado, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Carlos Machado, M.D.?
Quality data not reportedPrimary specialty
Nephrology Physician
Medicare Part D claims
1,157 20% vs specialty avg
Specialty distribution in Delaware
How Nephrology Physician compares to other specialties among Delaware 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 Nephrology 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).
Carlos Machado, M.D. appears in the CMS NPPES registry as a Nephrology Physician provider holding M.D. credentials at 4923 OGLETOWN STANTON RD, Newark, DE, 19713, with a listed phone of (302) 225-0451. NPI 1497995690 was issued on 02/27/2009.
Medicare Part D records for calendar year 2023 show 1,157 prescription claims written by this provider, covering 212 Medicare beneficiaries and totaling roughly $247K in drug spend, split 15% brand-name and 85% generic by claim count.
Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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
Provider Details
| NPI | 1497995690 |
|---|---|
| Specialty | Nephrology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/27/2009 |
Hospital and facility affiliations
Facilities where Carlos Machado, M.D. 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.
Nephrology Associates PA
Elkton, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Carlos Machado, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$589
Largest payer
Mallinckrodt Hospital Products 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
Carlos Machado, M.D. - brand share 15.0%
Nephrology Physician average
15% brand-name claims vs 85% generic, on 1,157 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.
1,157
Total Claims
$247K
Total Drug Cost
212
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,902
- Total Day Supply
- 85,708
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $209K
- Generic Drug Cost
- $37K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 71.6 years
- Avg HCC Risk Score
- 3.51
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 41, 65-74: 71, 75-84: 74, 85+: 26
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Carlos Machado, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
104 claims
- Furosemide
Furosemide
82 claims
- Losartan Potassium
Losartan Potassium
79 claims
- Valsartan
Valsartan
64 claims
- Lisinopril
Lisinopril
53 claims
- Hydralazine Hcl
Hydralazine Hcl
52 claims
- Farxiga
Farxiga
42 claims
- Carvedilol 33
Carvedilol
33 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 104 |
| Furosemide | 82 |
| Losartan Potassium | 79 |
| Valsartan | 64 |
| Lisinopril | 53 |
| Hydralazine Hcl | 52 |
| Farxiga Dapagliflozin Propanediol | 42 |
| Carvedilol | 33 |
| Cinacalcet Hcl | 32 |
| Jardiance Empagliflozin | 31 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nephrology Physician Overview
How Carlos Machado, M.D. fits within the Nephrology Physician landscape nationally.
10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider
Carlos Machado, M.D.'s 1,157 claims are below the specialty average of 1,454.
Nearby Nephrology Physician Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Machado.
Dr. Feroz Abubacker Kaniyamparambil
M.D
Newark, DE
Dr. Afsheen Afzal
MD
Lewes, DE
Dr. Brajesh Agarwal
M.D.
Wilmington, DE
Dr. Piyaporn Apivatanagul
MD
Newark, DE
Dr. Manmeet Brar
MD
Dover, DE
Compare Nephrology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Delaware medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nephrology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Frequently Asked Questions
What is Carlos Machado, M.D.'s specialty? ▼
Carlos Machado, M.D. specializes in Nephrology Physician and practices in Newark, Delaware. Credentials: M.D..
How much does Carlos Machado, M.D. prescribe under Medicare Part D? ▼
In 2023, Carlos Machado, M.D. wrote 1,157 Medicare Part D claims totaling $247K in drug costs for 212 beneficiaries.
Where is Carlos Machado, M.D. located? ▼
Carlos Machado, M.D. is located at 4923 OGLETOWN STANTON RD, Newark, DE, 19713. Phone: (302) 225-0451.
What is Carlos Machado, M.D.'s NPI number? ▼
Carlos Machado, M.D.'s National Provider Identifier (NPI) is 1497995690, issued on 02/27/2009.
Does Carlos Machado, M.D. prescribe more brand-name or generic drugs? ▼
Carlos Machado, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $209K in brand drug costs.
How many Nephrology Physician providers are there in the US? ▼
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does Carlos Machado, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Carlos Machado, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Furosemide, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carlos Machado, M.D. accept Medicare? ▼
Carlos Machado, M.D. appears in CMS Medicare data with 1,157 Part D claims and 212 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carlos Machado, M.D.'s credentials? ▼
Carlos Machado, M.D.'s NPI is 1497995690 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
Compiled from official public sources by the PlainDoctor editorial team.