Harold Hellweg, D.O.
NPI 1790071231 · Internal Medicine Physician · Owatonna, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harold Hellweg, D.O. is a Internal Medicine Physician provider in Owatonna, MN (NPI 1790071231).
Provider details
- NPI number
- 1790071231
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 55309 (MN)
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
15 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
1,786 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 277 | $129 |
| 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 | 263 | $16 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 144 | $65 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 140 | $182 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 116 | $63 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 420 | 130 |
| Lisinopril | 331 | 107 |
| Amlodipine Besylate | 329 | 115 |
| Levothyroxine Sodium | 304 | 87 |
| Metoprolol Succinate | 265 | 77 |
| Losartan Potassium | 253 | 81 |
| Warfarin Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-06-23
- Last updated
- 2021-01-07
- Certified
- 2021-01-07
Frequently asked questions
- What is Harold Hellweg's NPI number?
- Harold Hellweg's National Provider Identifier (NPI) is 1790071231, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Hellweg's specialty?
- Harold Hellweg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Harold Hellweg located?
- Harold Hellweg's practice location on file with NPPES is 2200 Nw 26th St, Owatonna, MN 55060-5503.
- What is Harold Hellweg's phone number?
- The practice phone number listed in the NPPES registry for Harold Hellweg is (507) 444-5055.
- Does Harold Hellweg accept Medicare?
- Harold Hellweg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Harold Hellweg's NPI active?
- Yes — Harold Hellweg's NPI (1790071231) is active in the NPPES registry as of the last update on 2021-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.