Janet Guelfi, APRN
Family Nurse Practitioner · Detroit, MI
Janet Guelfi, APRN is a family nurse practitioner with a practice address in Detroit, Michigan, and NPI 1871270967, issued on Jun 29, 2023. Check the license (Michigan 4704405228, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Janet Guelfi
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 4704405228 MI
APRN11027102 FL
11027102 FL
Self-reported in NPPES; status is on the state search - Practice location
- 400 Renaissance Ctr Ste 2600, Detroit, MI 48243
- Phone
- (888) 731-8994
- Enumerated
- Jun 29, 2023
- Record last updated
- Oct 22, 2025
- Medicaid ID
- 119840600 FL
- Medicare enrollment
- Enrolled (PECOS I20231026003077); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 5,356 in Michigan → Look up another NPI →
Also registered at 400 Renaissance Ctr Ste 2600
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Janet Guelfi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704405228Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average family nurse practitioner in 2024
4,735 Medicare Part D claims for 1,479 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium315 claims
- Levothyroxine Sodium235 claims
- Amlodipine Besylate234 claims
- Lisinopril189 claims
- Losartan Potassium181 claims
- Rosuvastatin Calcium169 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.
Bills Medicare through 2 group practices
- Chelsea Urgent Care Walk-IN Clinic PCChelsea, MI
- Lee Health System IncCape Coral, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janet Guelfi among 5,356 family nurse practitioner records in Michigan
Janet Guelfi, APRN is one of 5,356 family nurse practitioner records with a practice address in Michigan. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 79% of them.
- NPI issued2023 · 79% of these records are older, 14% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2023 · median 2019 among the 3,254 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
331 family nurse practitioner records list a practice address in Detroit
They are 331 of the 19,832 NPPES records with a practice address in Detroit, and 5,356 family nurse practitioner records in Michigan.
All 5,356 in Michigan → Every provider in Detroit → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Stephanie Boerger, NURSE PRACTITIONERDetroit, MI 482431548735483
- Veronica Brown, NURSE PRACTITIONERDetroit, MI 482431932714078
- Janel Caires, FNP, BCDetroit, MI 482431396159802
- Kristin DavisDetroit, MI 482431396330940
- Laura Duty, APRNDetroit, MI 482431891172029
- Chelsea Ingerman, APRN, FNP-CDetroit, MI 482431134727654
- Khushpal Kaur, N.P.Detroit, MI 482431386994234
- Clare Maclean, MSN, FNP-CDetroit, MI 482431790338143
Common questions
What is Janet Guelfi, APRN's NPI number?
Janet Guelfi, APRN's National Provider Identifier (NPI) is 1871270967, issued on Jun 29, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Janet Guelfi, APRN located?
The NPPES record lists a practice address at 400 Renaissance Ctr Ste 2600, Detroit, MI, 48243. Phone: (888) 731-8994. Providers update this record themselves, so call before visiting.
How can I verify Janet Guelfi, APRN's license?
NPPES lists Michigan license number 4704405228, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Janet Guelfi, APRN prescribe under Medicare Part D?
In 2024, Janet Guelfi, APRN had 4,735 Medicare Part D claims for 1,479 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.