NPPES file of Aug 9, 2026

Charlotte Florence Nielsen, O.D.

Optometrist · Grayslake, IL

Charlotte Florence Nielsen, O.D. is an optometrist with a practice address in Grayslake, Illinois, and NPI 1962492975, issued on Oct 21, 2005. Check the license (Illinois 046008590, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962492975
Name
Charlotte Florence Nielsen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
046008590 IL
Self-reported in NPPES; status is on the state search
Practice location
1120 E Washington St, Grayslake, IL 60030
Phone
(847) 223-2000
Enumerated
Oct 21, 2005
Record last updated
Jun 13, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(847) 223-9400
Medicaid ID
046008590 IL
Medicare enrollment
Enrolled (PECOS I20100909001045); accepts Medicare assignment
Medical or professional school
Illinois College Of Optometry At Chicago, 1992
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Charlotte Florence Nielsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 046008590
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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94% fewer Medicare Part D claims than the average optometrist in 2024

18 Medicare Part D claims for 12 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Charlotte Nielsen18
  2. Specialty average277

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $199.86

2 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Charlotte Nielsen$199.86
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Charlotte Florence Nielsen among 2,697 optometrist records in Illinois

Charlotte Florence Nielsen, O.D. is one of 2,697 optometrist records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated1992 · median 2008 among the 1,513 with a school on file
  • Record last updated2008 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in Illinois

There are 2,697 optometrist records in Illinois.

The 8 optometrist records with the nearest ZIP codes

  1. Victoria Haynes, O.D.Grayslake, IL 600301669524054
  2. Carla Iafigliola, ODGrayslake, IL 600301477615524
  3. Kelly Raether, O.D.Grayslake, IL 600301356413223
  4. Robert Alongi, O.D.Gurnee, IL 600311902863855
  5. Eugene Berkovich, O.D.Gurnee, IL 600311366514176
  6. Brent Gandolfi, O.D.Gurnee, IL 600311578617783
  7. Thuy Ho, O.D.Gurnee, IL 600311366502718
  8. Jerilyn Prybell, O.D.Gurnee, IL 600311295814572

Common questions

What is Charlotte Florence Nielsen, O.D.'s NPI number?

Charlotte Florence Nielsen, O.D.'s National Provider Identifier (NPI) is 1962492975, issued on Oct 21, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Charlotte Florence Nielsen, O.D. located?

The NPPES record lists a practice address at 1120 E Washington St, Grayslake, IL, 60030. Phone: (847) 223-2000. Providers update this record themselves, so call before visiting.

How can I verify Charlotte Florence Nielsen, O.D.'s license?

NPPES lists Illinois license number 046008590, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Charlotte Florence Nielsen, O.D. prescribe under Medicare Part D?

In 2024, Charlotte Florence Nielsen, O.D. had 18 Medicare Part D claims for 12 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.