Clarrisa C. Hamann, APN-CNP
Nurse Practitioner · Highland Park, IL
Clarrisa C. Hamann, APN-CNP is a nurse practitioner with a practice address in Highland Park, Illinois, and NPI 1255542718, issued on May 25, 2007. Check the license (Illinois 209-004281, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Clarrisa C. Hamann
- Credential
- APN-CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209-004281 IL
041271088 IL
Self-reported in NPPES; status is on the state search - Practice location
- 777 Park Ave. West, Highland Park, IL 60035
- Phone
- (847) 480-3956
- Enumerated
- May 25, 2007
- Record last updated
- Jun 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (847) 480-2861
- Medicare enrollment
- Enrolled (PECOS I20050809000429); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 777 Park Ave. West
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Clarrisa C. Hamann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209-004281Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average nurse practitioner in 2024
1,508 Medicare Part D claims for 329 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Metoprolol Succinate167 claims
- Atorvastatin Calcium127 claims
- Spironolactone120 claims
- Eliquis112 claims
- Furosemide106 claims
- Carvedilol85 claims
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.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,052.67
57 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Endeavor Health Medical GroupGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clarrisa C. Hamann among 4,892 nurse practitioner records in Illinois
Clarrisa C. Hamann, APN-CNP is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 11% of them.
- NPI issued2007 · 11% of these records are older, 85% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2001 · median 2018 among the 3,389 with a school on file
- Record last updated2019 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 nurse practitioner records list a practice address in Highland Park
They are 24 of the 882 NPPES records with a practice address in Highland Park, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Highland Park → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Linda Advincula, APN-CNPHighland Park, IL 600351841719457
- Elizabeth Alexander, FNPHighland Park, IL 600351730690942
- Olga Amusina, APN-CNPHighland Park, IL 600351194936500
- Michelle Garrett, APN-CNPHighland Park, IL 600351326453713
- Sarah Hussain, APNHighland Park, IL 600351063840072
- Eunice Kim, FNP-BC, RNHighland Park, IL 600351629427968
- Christina Kopeika, C.N.P.Highland Park, IL 600351538191978
- Monique Lambert, APN-CNPHighland Park, IL 600351841230216
Common questions
What is Clarrisa C. Hamann, APN-CNP's NPI number?
Clarrisa C. Hamann, APN-CNP's National Provider Identifier (NPI) is 1255542718, issued on May 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Clarrisa C. Hamann, APN-CNP located?
The NPPES record lists a practice address at 777 Park Ave. West, Highland Park, IL, 60035. Phone: (847) 480-3956. Providers update this record themselves, so call before visiting.
How can I verify Clarrisa C. Hamann, APN-CNP's license?
NPPES lists Illinois license number 209-004281, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Clarrisa C. Hamann, APN-CNP prescribe under Medicare Part D?
In 2024, Clarrisa C. Hamann, APN-CNP had 1,508 Medicare Part D claims for 329 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Clarrisa C. Hamann, APN-CNP's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.