NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1982652186 MD
Verify on CMS → Maitreyi Janarthanan, MD
Internal Medicine Physician in Muscatine, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,737 in 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.
Industry payments
$17.73
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Maitreyi Janarthanan, MD is an Internal Medicine Physician in Muscatine, Iowa, listed in the federal CMS National Provider Identifier registry.
- $17.73
- industry payments (Sunshine Act)
- #9
- Internal Medicine Physician rank among Iowa specialties
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 Maitreyi Janarthanan, MD
Active federal NPI registry listing — verify license, disciplinary history, and board certification with official sources before relying on this profile.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1982652186), first enumerated 05/04/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$17.73 in reported industry payments (1 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 1982652186 · Internal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1982652186
- ENUM-LEGACY 2006
- TAX-MEGA 173K Internal Medicine
- RX-NONE No Part D
- BOOK-LIGHT 1,320 in Iowa
- PHOTO-ENUM Daniel Merson · 2006
◑
Board-eligible specialty (heuristic, not verified)
Maitreyi Janarthanan, MD 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 Maitreyi Janarthanan, MD?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Specialty distribution in Iowa
How Internal Medicine Physician compares to other specialties among Iowa 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 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 | 1982652186 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/04/2006 |
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 Maitreyi Janarthanan, MD. Source: openpaymentsdata.cms.gov.
Total received
$18
Largest payer
Abbott Laboratories
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.
Internal Medicine Physician Overview
How Maitreyi Janarthanan, MD fits within the Internal Medicine Physician landscape nationally.
172,737
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider
Nationwide Internal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Janarthanan, both outside Iowa 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 Internal Medicine Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Janarthanan.
One of 1,320 Internal Medicine Physician providers enrolled in Iowa, 5 are shown here.
Dr. Baha Abbad
MD
Waterloo, IA
Dr. Shazia Abbas
MD
Ottumwa, IA
Dr. Abdullah Abbasi
MD
Iowa City, IA
Dr. Duane Abbott
MD
Des Moines, IA
Dr. Francois Abboud
MD
Iowa City, IA
Compare Internal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Maitreyi Janarthanan, MD's specialty? ▼
Maitreyi Janarthanan, MD specializes in Internal Medicine Physician and practices in Muscatine, Iowa. Credentials: MD.
Where is Maitreyi Janarthanan, MD located? ▼
Maitreyi Janarthanan, MD is located at 1903 PARK AVE, Muscatine, IA, 52761. Phone: (563) 263-1903.
What is Maitreyi Janarthanan, MD's NPI number? ▼
Maitreyi Janarthanan, MD's National Provider Identifier (NPI) is 1982652186, issued on 05/04/2006.
How many Internal Medicine Physician providers are there in the US? ▼
There are 172,737 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
Does Maitreyi Janarthanan, MD accept Medicare? ▼
Maitreyi Janarthanan, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maitreyi Janarthanan, MD's credentials? ▼
Maitreyi Janarthanan, MD's NPI is 1982652186 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
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.
- 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.