Herman Hasselkus, M.D.
NPI 1053481382 · Geriatric Medicine (Internal Medicine) Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Herman Hasselkus, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Aurora, CO (NPI 1053481382).
Provider details
- NPI number
- 1053481382
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 49496 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
5,223 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) |
|---|---|---|
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 1,157 | $39 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 632 | $62 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 605 | $128 |
| Administration of a Standardized, Evidence-Based Social Determinants of Health Risk Assessment Tool, 5-15 MinutesG0136 | 524 | $19 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 508 | $49 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 156 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 983 | 320 |
| Metformin Hcl | 380 | 159 |
| Dapagliflozin Propanediolbrand: Farxiga | 368 | 105 |
| Amlodipine Besylate | 331 | 117 |
| Lisinopril | 314 | 104 |
| Losartan Potassium | 281 | 86 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,797 across 127 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
- 2006-11-08
- Last updated
- 2012-07-20
Frequently asked questions
- What is Herman Hasselkus's NPI number?
- Herman Hasselkus's National Provider Identifier (NPI) is 1053481382, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Herman Hasselkus's specialty?
- Herman Hasselkus is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Herman Hasselkus located?
- Herman Hasselkus's practice location on file with NPPES is 1360 S Potomac St, Aurora, CO 80012-4505.
- What is Herman Hasselkus's phone number?
- The practice phone number listed in the NPPES registry for Herman Hasselkus is (303) 337-5575.
- Does Herman Hasselkus accept Medicare?
- Herman Hasselkus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Herman Hasselkus's NPI active?
- Yes — Herman Hasselkus's NPI (1053481382) is active in the NPPES registry as of the last update on 2012-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.