William Hitzelberger, D.O.
NPI 1659312601 · Internal Medicine Physician · Alpena, MI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hitzelberger, D.O. is a Internal Medicine Physician provider in Alpena, MI (NPI 1659312601).
Provider details
- NPI number
- 1659312601
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 5101015715 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,243 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| 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 | 1,321 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,209 | $93 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 537 | $63 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 64 | $128 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 53 | $174 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 429 | 125 |
| Prednisone | 236 | 59 |
| Abiraterone Acetate | 234 | 31 |
| Prochlorperazine Maleate | 147 | 98 |
| Dexamethasone | 137 | 53 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 121 | 26 |
| Duloxetine Hcl | 120 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$282 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2010-06-09
Frequently asked questions
- What is William Hitzelberger's NPI number?
- William Hitzelberger's National Provider Identifier (NPI) is 1659312601, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hitzelberger's specialty?
- William Hitzelberger is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Hitzelberger located?
- William Hitzelberger's practice location on file with NPPES is 1501 W Chisholm St, Alpena, MI 49707-1401.
- What is William Hitzelberger's phone number?
- The practice phone number listed in the NPPES registry for William Hitzelberger is (989) 356-7000.
- Does William Hitzelberger accept Medicare?
- William Hitzelberger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hitzelberger's NPI active?
- Yes — William Hitzelberger's NPI (1659312601) is active in the NPPES registry as of the last update on 2010-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.