Janet Guelfi, APRN
- Medicare services, 2024
- 1,170
- Medicare patients, 2024
- 740
- Part D claims, 2024
- 4,735
- Hospital affiliations
- 3
- Medical groups
- 10
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Janet Guelfi's professional email, personal email and mobile number
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Janet Guelfi is a family nurse practitioner in Grand Rapids, Michigan
Janet Guelfi practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Janet Guelfi's NPI, 1871270967, was assigned on June 29, 2023. Janet Guelfi holds Florida license APRN11027102.
- NPI
- 1871270967NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133575194
- NPI enumeration date
- June 29, 2023
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Janet Guelfi practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Janet Guelfi's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Janet Guelfi is affiliated with 5 sites of care and 10 medical groups
Janet Guelfi's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Janet Guelfi is also affiliated with Lee Memorial Hospital. The medical group on file is Lee Physician Group. Dmand AI also links Janet Guelfi to 1 more hospital, 9 medical groups and 2 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Janet Guelfi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Janet Guelfi practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +4 more sites and 9 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Janet Guelfi is one of 4,420 family nurse practitioners in Michigan
Family is Janet Guelfi's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Dmand AI has Janet Guelfi's licenses on file in 2 states: Florida and Michigan.
Specialties and state licenses
- Family nurse practitioner, FloridaPrimary
- Nurse practitioner, Michigan
Clinical focus
Dmand AI lists chronic diabetes, chronic kidney disease, chronic obstructive pulmonary disease (COPD), enlarged thyroid, high cholesterol, neuropathy, osteoporosis and tobacco use among the conditions Janet Guelfi treats.
Family nurse practitioners near Janet Guelfi
Counts of family 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
Janet Guelfi billed Medicare for 1,170 services in 2024
CMS data shows 1,170 Medicare services from Janet Guelfi across 11 procedure codes in 2024, for 740 Medicare patients. Medicare paid $76,463 for them. Every service was in an office.
Janet Guelfi's Medicare services by type, 2024
- Office and hospital visits804
- Other services192
- Tests and treatments99
- Lab and pathology75
Janet Guelfi compared with the Michigan median for family nurse practitioners, 2024
- Janet Guelfi
- Michigan median
- Medicare services
- 1,170vs 1786.6 times
- Medicare patients
- 740vs 868.6 times
- Part D claims
- 3,943vs 4339.1 times
Medians across 2,365 family nurse practitioners in Michigan with Dmand AI profiles that report each measure.
Janet Guelfi's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Janet Guelfi treated 740 Medicare patients in 2024, average age 76
CMS counts 740 Medicare patients who saw Janet Guelfi in 2024. The largest group is 65 to 74, with 325 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 1% are also on Medicaid. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Janet Guelfi's median patient age at 67, with 76% women.
Janet Guelfi's Medicare patients by age, 2024
Janet Guelfi's Medicare patients by sex, 2024
- Women44861%
- Men29239%
Chronic conditions among Janet Guelfi's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Ischemic heart disease30%
- Anxiety27%
- Mood disorders22%
- Atrial fibrillation20%
- Depression20%
Share of Medicare patients with each condition. A patient can have several.
Janet Guelfi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women76%
- Men23%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Janet Guelfi wrote 4,735 Medicare Part D claims in 2024
In 2024, Janet Guelfi wrote 4,735 Medicare Part D claims for 1,479 patients. 89% of them were for generic drugs. CMS names the drug for 3,943 of them, across 85 drugs with 11 or more claims each, at $213,834 in total drug cost.
Janet Guelfi's Part D claims by kind of drug, 2024
- Generic4,236 claims89%
- Brand-name484 claims10%
- Other15 claims0%
Janet Guelfi's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Janet Guelfi's Part D claims, 2024
- Opioids0%16 of 4,735 claims
- Antibiotics6%281 of 4,735 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Janet Guelfi takes part in Medicare
Janet Guelfi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Janet Guelfi'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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) |
| 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 Janet Guelfi
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Janet Guelfi's NPI number?
Janet Guelfi's NPI number is 1871270967. It was assigned on June 29, 2023, and it is active in the NPI Registry.
What does Janet Guelfi specialize in?
Janet Guelfi is a family nurse practitioner in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Janet Guelfi practice?
Janet Guelfi practices at 100 Michigan St NE, Grand Rapids, MI 49503. Janet Guelfi's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Janet Guelfi to 1 hospital, 9 medical groups and 2 group practices and clinics.
What is Janet Guelfi's office phone number?
The practice phone on file for Janet Guelfi is (616) 391-1774.
What is Janet Guelfi's medical license number?
Janet Guelfi holds Florida license APRN11027102, one of the licenses on file in 2 states.
Which states has Janet Guelfi been licensed in?
Dmand AI has state licenses on file for Janet Guelfi in Florida and Michigan.
Which hospitals is Janet Guelfi affiliated with?
Janet Guelfi practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Janet Guelfi is also affiliated with Lee Memorial Hospital. Dmand AI links Janet Guelfi to 1 more hospital.
What medical group is Janet Guelfi part of?
Janet Guelfi is linked to Lee Physician Group. Dmand AI links Janet Guelfi to 9 more medical groups.
Does Janet Guelfi accept Medicare?
Yes. CMS data shows Janet Guelfi billed Medicare for 1,170 services in 2024, and Janet Guelfi accepts Medicare assignment.
How many Medicare patients does Janet Guelfi see?
CMS counts 740 Medicare patients who saw Janet Guelfi in 2024, with an average age of 76.
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What services does Janet Guelfi bill to Medicare?
In 2024, Janet Guelfi's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0439).
What drugs does Janet Guelfi prescribe most?
In 2024 Medicare Part D data, Janet Guelfi's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
How long has Janet Guelfi been practicing?
Janet Guelfi graduated from medical school in 2023, 3 years ago.
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