JOHN WILLIAM HIEMENZ MD
NPI 1447271887
Internal Medicine - Hematology & Oncology in Gainesville, FL
About John William Hiemenz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN WILLIAM HIEMENZ MD (NPI 1447271887) is an individual hematology & oncology provider in Gainesville, Florida, licensed in Florida (ME 41865) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John William Hiemenz Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Hiemenz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Gainesville, FL 32610
- Reassigned Medicare billing, Florida enrollment
- 3,324 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 32610 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GAINESVILLE, FL 32610
GAINESVILLE, FL 32610
GAINESVILLE, FL 32610
GAINESVILLE, FL 32610
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Hiemenz's NPI number?
The NPI number for John Hiemenz is 1447271887. It was assigned to this individual provider in the NPPES registry on July 21, 2006.
Where is John Hiemenz located?
John Hiemenz practices at 1600 SW Archer Rd, Gainesville, FL 32610. The listed phone number is (352) 273-7832.
What is John Hiemenz's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is John Hiemenz enrolled in Medicare?
Yes. John Hiemenz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Hiemenz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hiemenz reassigns Medicare benefits to Florida Clinical Practice Association Inc (Gainesville, FL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Hiemenz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hiemenz accept?
Health plans from Oscar Health Maintenance Organization of Florida list John Hiemenz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Hiemenz was last updated on November 2, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John William Hiemenz, MD · NPI 1447271887
Hematology & Oncology physician in Gainesville, Florida. Individual provider, active in the CMS NPPES registry since July 21, 2006.
## Identity
- **NPI:** 1447271887 (Entity type: Individual)
- **Enumerated:** July 21, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** ME 41865 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 SW ARCHER RD, Gainesville, FL 32610-3003
- **Phone:** (352) 273-7832 · **Fax:** (352) 273-5006
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Florida Clinical Practice Association Inc (NPI 1063463768, Gainesville, FL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 2, 2009
- **Other identifiers:** Medicare UPIN D57705 (LA); Medicaid 1628751 (LA); Medicaid 259000000 (FL); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1447271887) · Data from the CMS NPPES public registry.