NPI registry status
Active
2026 NPPES data Registered Dietitian NPI 1245566637 RD
Verify on CMS → Cynthia Lessen, RD
Registered Dietitian in Mount Carmel, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 66,712 in Registered Dietitian, 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.
What the federal data shows
Cynthia Lessen, RD is a Registered Dietitian in Mount Carmel, Illinois, listed in the federal CMS National Provider Identifier registry.
- #26
- Registered Dietitian rank among Illinois 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 Cynthia Lessen, RD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1245566637), first enumerated 10/20/2009.
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
- 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.
Compare Lessen with other Registered Dietitian providers
Same primary specialty, same federal CMS NPPES roster.
All 3 Registered Dietitian providers in Mount Carmel, IL →
Also enrolled in Illinois
- Taylor Aarns, RDN Belleville, IL
- Rebecca Abbatiello, RD Wheaton, IL
- Heba Abdel Latief, RDN Chicago, IL
- Duaa Abdullah Bridgeview, IL
- Leen Abdulqader, RD Bridgeview, IL
- Abdullah Abdulwahid Plainfield, IL
Other specialties in Mount Carmel: Counselor (12) · Speech-Language Pathologist (10) · Registered Nurse (10) · Mental Health Counselor (8)
CMS NPPES provider registry desk
NPI 1245566637 · Registered Dietitian
NPI-10 · ENUM-MID · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1245566637
- ENUM-MID 2009
- TAX-MEGA 67K Registered Dietitian
- RX-NONE No Part D
- BOOK-LIGHT 2,828 in Illinois
- PHOTO-ENUM Jennifer Buker, RD · 2009
What does the federal data show about Cynthia Lessen, RD?
Quality data not reportedPrimary specialty
Registered Dietitian
Specialty distribution in Illinois
How Registered Dietitian compares to other specialties among Illinois 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 Registered Dietitian. 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 | 1245566637 |
|---|---|
| Specialty | Registered Dietitian |
| Credentials | RD |
| Gender | Female |
| NPI Issued | 10/20/2009 |
Registered Dietitian Overview
How Cynthia Lessen, RD fits within the Registered Dietitian landscape nationally.
66,712
Registered Dietitian Providers in US
55
States with Registered Dietitian
762
Avg Claims per Provider
Nationwide Registered Dietitian peers with similar MIPS or enrollment year
Two federal-record peer sets for Lessen, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Registered Dietitian Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Lessen.
One of 2,828 Registered Dietitian providers enrolled in Illinois, 11 are shown on this page.
Priscilla Abel Paul
RDN
Bement, IL
Kathleen Abernathy
R.D., L.D.N.
Lake Forest, IL
Patricia Abernathy
La Grange, IL
Michael Abromaitis
RDN
Skokie, IL
Sarah Abu-Ghannam
MS, RDN, LDN
Glenview, IL
Compare Registered Dietitian nationally: see state-by-state distribution →
Frequently Asked Questions
What is Cynthia Lessen, RD's specialty? ▼
Cynthia Lessen, RD specializes in Registered Dietitian and practices in Mount Carmel, Illinois. Credentials: RD.
Where is Cynthia Lessen, RD located? ▼
Cynthia Lessen, RD is located at 1418 COLLEGE DR, Mount Carmel, IL, 62863. Phone: (618) 262-8621.
What is Cynthia Lessen, RD's NPI number? ▼
Cynthia Lessen, RD's National Provider Identifier (NPI) is 1245566637, issued on 10/20/2009.
How many Registered Dietitian providers are there in the US? ▼
There are 66,712 Registered Dietitian providers across 55 states in the US. The average Registered Dietitian provider writes 762 Medicare Part D claims per year.
Does Cynthia Lessen, RD accept Medicare? ▼
Cynthia Lessen, RD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cynthia Lessen, RD's credentials? ▼
Cynthia Lessen, RD's NPI is 1245566637 with credentials RD. 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 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
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 September 2026.