Provider Profile
Listed in the NPI registry as a nurse practitioner, Dianne F. Harker, NP practices in Saginaw, MI. Dianne is also listed as specializing in registered nurse. Medicare claims data shows Dianne provided 951 services to 399 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes and initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
700 COOPER AVE
Saginaw, MI 48602
951 services · 399 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
807 | More than most peers in Nurse Practitioner |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
144 | More than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dianne F. Harker is a nurse practitioner in Saginaw, MI. That is the designation recorded for this NPI in the federal registry.
NPI registry
Dianne F. Harker is listed at 700 Cooper Ave, Saginaw, MI 48602. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (989) 583-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dianne F. Harker's National Provider Identifier is 1891361739. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dianne F. Harker attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
Dianne F. Harker has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dianne F. Harker the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dianne F. Harker. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.