Cassandra A. Guenthardt, NP-C
Family Nurse Practitioner · Manistee, MI
Cassandra A. Guenthardt, NP-C is a family nurse practitioner with a practice address in Manistee, Michigan, and NPI 1427729979, issued on Sep 24, 2021. Check the license (Michigan 4704257000, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cassandra A. Guenthardt
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 4704257000 MI
470425700 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1391 E Parkdale Ave, Manistee, MI 49660
- Phone
- (231) 398-1878
- Enumerated
- Sep 24, 2021
- Record last updated
- May 23, 2025
- Fax
- (231) 398-1768
- Medicare enrollment
- Enrolled (PECOS I20220721001059); 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 1391 E Parkdale Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ruben Barroso, DOFamily Medicine Physician1922673243
- Theodore Batzer, MDNeuromusculoskeletal Medicine & OMM Physician1336131606
- Jessica Heron, PA-CPhysician Assistant1770081002
- Chelsey KottPeer Specialist1104784958
Verify Cassandra A. Guenthardt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704257000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.2 times the Medicare Part D claims of the average family nurse practitioner in 2024
12,069 Medicare Part D claims for 672 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 673 claims were for opioids.
Most prescribed
- Atorvastatin Calcium487 claims
- Lisinopril480 claims
- Gabapentin449 claims
- Levothyroxine Sodium399 claims
- Hydrocodone-Acetaminophen386 claims
- Amlodipine Besylate312 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.
Industry payments in 2024: $319.86
15 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
One hospital affiliation
- Munson Healthcare Manistee HospitalManistee, MI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Cassandra A. Guenthardt among 5,356 family nurse practitioner records in Michigan
Cassandra A. Guenthardt, NP-C 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 2021, is newer than 62% of them.
- NPI issued2021 · 62% of these records are older, 29% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2021 · 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).
16 family nurse practitioner records list a practice address in Manistee
They are 16 of the 319 NPPES records with a practice address in Manistee, and 5,356 family nurse practitioner records in Michigan.
All 5,356 in Michigan → Every provider in Manistee → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- James BarczewskiManistee, MI 496601265185474
- Stacey Bonecutter, FNPManistee, MI 496601194139527
- Jacob Deboni, FNPManistee, MI 496601578036091
- Renee Dorr, MSN, APRN, FNP-CManistee, MI 496601700305661
- Keri Foster, NPManistee, MI 496601225529019
- Elizabeth Foster, NPManistee, MI 496601306575618
- Nicole Kanomata, FNPManistee, MI 496601366165102
- Faith Kelley, FNP-BCManistee, MI 496601942804562
Common questions
What is Cassandra A. Guenthardt, NP-C's NPI number?
Cassandra A. Guenthardt, NP-C's National Provider Identifier (NPI) is 1427729979, issued on Sep 24, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra A. Guenthardt, NP-C located?
The NPPES record lists a practice address at 1391 E Parkdale Ave, Manistee, MI, 49660. Phone: (231) 398-1878. Providers update this record themselves, so call before visiting.
How can I verify Cassandra A. Guenthardt, NP-C's license?
NPPES lists Michigan license number 4704257000, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Cassandra A. Guenthardt, NP-C prescribe under Medicare Part D?
In 2024, Cassandra A. Guenthardt, NP-C had 12,069 Medicare Part D claims for 672 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.