Quick answers
- Does Calvin G. Hagglov accept Medicare assignment?
- Yes. Medicare's clinician data says Calvin G. Hagglov accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Calvin G. Hagglov see?
- In 2024, CMS data shows 150 Original Medicare patients and 603 services for Calvin G. Hagglov. This counts Original Medicare only and measures volume, not quality.
- What is Calvin G. Hagglov's NPI number?
- 1023048816. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Calvin G. Hagglov, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 150 |
|---|---|
| Services billed to Medicare | 603 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)156 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)79 services
- Hemoglobin a1c level (83036)58 services
- 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's (G2211)47 services
- Administration of influenza virus vaccine (G0008)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure69%
- High cholesterol57%
- Arthritis43%
- Diabetes33%
- Chronic kidney disease25%
- Ischemic heart disease23%
Hospitals where Calvin G. Hagglov works
Medicare's Facility Affiliation Data lists Calvin G. Hagglov at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Loma Linda University Medical CenterLoma Linda, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050327
- Loma Linda University Medical Center-MurrietaMurrieta, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050770
Practice locations
Addresses where Calvin G. Hagglov is enrolled with Medicare (CMS data updated October 2, 2026).
- 1454 E 2nd StSan Bernardino, CA 92408 (909) 382‑7100
- 250 S G StSan Bernardino, CA 92410 (909) 382‑7100
- 25828 Redlands Blvd, Suite 102Redlands, CA 92373 (909) 558‑6600
Group practices
Medicare enrollment lists Calvin G. Hagglov as a member of these groups (CMS data updated October 2, 2026).
- Faculty Physicians and Surgeons of Llusm1,315 clinicians in the group
- Sac Health System227 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in San Bernardino
Clinicians with the same Medicare primary specialty in San Bernardino, CA — not a recommendation.
Other clinicians in Faculty Physicians and Surgeons of Llusm
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1023048816 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians