John Hiemenz, MD
NPI 1447271887 · Hematology & Oncology Physician · Gainesville, FL
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hiemenz, MD is a Hematology & Oncology Physician provider in Gainesville, FL (NPI 1447271887).
Provider details
- NPI number
- 1447271887
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME 41865 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
526 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 174 | $77 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 168 | $94 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 101 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 39 | $116 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pomalidomidebrand: Pomalyst | 50 | — |
| Valacyclovir Hclbrand: Valacyclovir | 39 | 11 |
| Acyclovir | 33 | — |
| Prednisone | 20 | — |
| Tramadol Hcl | 19 | — |
| Gilteritinib Fumaratebrand: Xospata | 19 | — |
| Pantoprazole Sodium | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-21
- Last updated
- 2009-11-02
Frequently asked questions
- What is John Hiemenz's NPI number?
- John Hiemenz's National Provider Identifier (NPI) is 1447271887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hiemenz's specialty?
- John Hiemenz is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hiemenz located?
- John Hiemenz's practice location on file with NPPES is 1600 Sw Archer Rd, Gainesville, FL 32610-3003.
- What is John Hiemenz's phone number?
- The practice phone number listed in the NPPES registry for John Hiemenz is (352) 273-7832.
- Does John Hiemenz accept Medicare?
- John Hiemenz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hiemenz's NPI active?
- Yes — John Hiemenz's NPI (1447271887) is active in the NPPES registry as of the last update on 2009-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.