Clarrisa C. Hamann, Apncnp
- Medicare patients, 2024
- 207
- Part D claims, 2024
- 1,508
- MIPS score, 2024
- 85
- Hospital affiliations
- 3
- Industry payments
- $1,018
- Practice address
- 2150 Pfingsten Rd, Glenview, IL 60026
- Practice phone
- Call (847) 570-5235
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northshore University Healthsystem Faculty Practice Associates
Glenview, Illinois
Find Clarrisa Hamann's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Clarrisa C. Hamann is a nurse practitioner in Glenview, Illinois
Clarrisa Hamann practices at Northshore University Healthsystem Faculty Practice Associates in Glenview, Illinois.
Clarrisa Hamann's NPI, 1255542718, was assigned on May 25, 2007. Clarrisa Hamann holds Illinois license 209-004281.
- NPI
- 1255542718NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274562335
- NPI enumeration date
- May 25, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (847) 570-5235
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Clarrisa C. Hamann practices at Northshore University Healthsystem Faculty Practice Associates in Glenview, Illinois
Clarrisa Hamann's primary practice is Northshore University Healthsystem Faculty Practice Associates, at 2150 Pfingsten Rd, Glenview, IL 60026 in Cook County. The practice phone is (847) 570-5235.
- Northshore University Healthsystem Faculty Practice Associates2150 Pfingsten Rd, Glenview, IL 60026 · Cook CountyPhone(847) 570-5235
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Clarrisa C. Hamann is affiliated with 4 sites of care and 1 medical group
Clarrisa Hamann's primary practice is Northshore University Healthsystem Faculty Practice Associates in Glenview, Illinois. Clarrisa Hamann is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Clarrisa Hamann to 2 more hospitals, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Clarrisa C. Hamann's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Clarrisa Hamann practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northshore University Healthsystem Faculty Practice Associates | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Clarrisa C. Hamann is one of 4,254 nurse practitioners in Illinois
Nurse practitioner is Clarrisa Hamann's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Clarrisa Hamann is licensed in Illinois.
Specialties and state licenses
- Nurse practitioner, IllinoisPrimary
Nurse practitioners near Clarrisa Hamann
Counts of nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Clarrisa C. Hamann treated 207 Medicare patients in 2024, average age 80
CMS counts 207 Medicare patients who saw Clarrisa Hamann in 2024. The largest group is 75 to 84, with 80 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Clarrisa Hamann's median patient age at 77, with 52% women.
Clarrisa Hamann's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Clarrisa Hamann's Medicare patients by sex, 2024
- Women9948%
- Men10852%
Chronic conditions among Clarrisa Hamann's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease62%
- Arthritis61%
- Heart failure59%
- Atrial fibrillation52%
- Chronic kidney disease42%
- Diabetes38%
Share of Medicare patients with each condition. A patient can have several.
Clarrisa Hamann's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Clarrisa C. Hamann wrote 1,508 Medicare Part D claims in 2024
In 2024, Clarrisa Hamann wrote 1,508 Medicare Part D claims for 329 patients. 80% of them were for generic drugs.
Clarrisa Hamann's Part D claims by kind of drug, 2024
- Generic1,212 claims80%
- Brand-name296 claims20%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Clarrisa C. Hamann scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Clarrisa Hamann for performance year 2024, reported as part of a group. Clarrisa Hamann accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Clarrisa Hamann as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Clarrisa Hamann's MIPS scores, performance year 2024
- 85of 100Final score
- 75.9of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Clarrisa C. Hamann received $1,018 in industry payments in 2025
CMS Open Payments shows 37 general payments to Clarrisa Hamann from 14 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $274.
Companies that paid Clarrisa Hamann the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Clarrisa C. Hamann's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Clarrisa C. Hamann
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Clarrisa C. Hamann's NPI number?
Clarrisa C. Hamann's NPI number is 1255542718. It was assigned on May 25, 2007, and it is active in the NPI Registry.
What does Clarrisa C. Hamann specialize in?
Clarrisa C. Hamann is a nurse practitioner in Glenview, Illinois. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Clarrisa C. Hamann practice?
Clarrisa Hamann practices at 2150 Pfingsten Rd, Glenview, IL 60026. Clarrisa Hamann's primary practice is Northshore University Healthsystem Faculty Practice Associates in Glenview, Illinois. Dmand AI also links Clarrisa Hamann to 2 hospitals.
What is Clarrisa C. Hamann's office phone number?
The practice phone on file for Clarrisa Hamann is (847) 570-5235.
What is Clarrisa C. Hamann's medical license number?
Clarrisa Hamann holds Illinois license 209-004281.
Which hospitals is Clarrisa C. Hamann affiliated with?
Clarrisa Hamann is affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Clarrisa Hamann to 2 more hospitals.
What medical group is Clarrisa C. Hamann part of?
Clarrisa Hamann is linked to Endeavor Health Medical Group.
Does Clarrisa C. Hamann accept Medicare?
Yes. CMS lists Clarrisa Hamann as accepting Medicare assignment.
Does Clarrisa C. Hamann offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Clarrisa Hamann as offering telehealth services.
What is Clarrisa C. Hamann's MIPS score?
Clarrisa Hamann's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
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How many Medicare patients does Clarrisa C. Hamann see?
CMS counts 207 Medicare patients who saw Clarrisa Hamann in 2024, with an average age of 80.
Has Clarrisa C. Hamann received payments from drug or device companies?
CMS Open Payments shows $1,018 in general payments to Clarrisa Hamann from 14 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Clarrisa C. Hamann been practicing?
Clarrisa Hamann graduated from medical school in 2001, 25 years ago.
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