Karen Marzella, NURSE PRACTIONIER
Nurse Practitioner · Troy, MI
Karen Marzella, NURSE PRACTIONIER is a nurse practitioner with a practice address in Troy, Michigan, and NPI 1376611863, issued on Dec 1, 2006. Check the license (Michigan 4704123587, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Marzella
- Credential
- NURSE PRACTIONIER
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4704123587 MI
Self-reported in NPPES; status is on the state search - Practice location
- 130 Town Center Dr Ste 200, Troy, MI 48084
- Phone
- (248) 740-0670
- Enumerated
- Dec 1, 2006
- Record last updated
- Jan 30, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (248) 740-0668
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,574 in Michigan → Look up another NPI →
Verify Karen Marzella in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704123587Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 97.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Karen Marzella among 3,574 nurse practitioner records in Michigan
Karen Marzella, NURSE PRACTIONIER is one of 3,574 nurse practitioner records with a practice address in Michigan. 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 84% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2018 · 52% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
76 nurse practitioner records list a practice address in Troy
They are 76 of the 3,809 NPPES records with a practice address in Troy, and 3,574 nurse practitioner records in Michigan.
All 3,574 in Michigan → Every provider in Troy → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Kailey Arbaugh, AGNP-CTroy, MI 480841619520327
- Diane Campbell, RN, FNPTroy, MI 480841700334125
- Joanna Hopkins, AGPCNP-BCTroy, MI 480841538864392
- Karla Jordan, NPTroy, MI 480841518403153
- Kathryn Knight-Lossing, AGNP-CTroy, MI 480841285205419
- Anne Kuzma, NPTroy, MI 480841114402468
- Catherine Nichols, NPTroy, MI 480841770565632
- Francesca QuallsTroy, MI 480841821561838
Common questions
What is Karen Marzella, NURSE PRACTIONIER's NPI number?
Karen Marzella, NURSE PRACTIONIER's National Provider Identifier (NPI) is 1376611863, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Marzella, NURSE PRACTIONIER located?
The NPPES record lists a practice address at 130 Town Center Dr Ste 200, Troy, MI, 48084. Phone: (248) 740-0670. Providers update this record themselves, so call before visiting.
How can I verify Karen Marzella, NURSE PRACTIONIER's license?
NPPES lists Michigan license number 4704123587, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
What is Karen Marzella, NURSE PRACTIONIER's MIPS final score?
The 2023 MIPS final score is 97.5 of 100, reported for the practice group. 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.