Quick answers
- Does Calvin R. Graef Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Calvin R. Graef Iii 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 R. Graef Iii see?
- In 2024, CMS data shows 773 Original Medicare patients and 1,320 services for Calvin R. Graef Iii. This counts Original Medicare only and measures volume, not quality.
- What is Calvin R. Graef Iii's NPI number?
- 1962649954. 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 R. Graef Iii, 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 | 773 |
|---|---|
| Services billed to Medicare | 1,320 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)506 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)193 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)168 services
- Imaging of retina (92134)153 services
- Exam of visual field with extended testing (92083)97 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 pressure75%
- High cholesterol74%
- Arthritis54%
- Diabetes39%
- Ischemic heart disease26%
- Chronic kidney disease26%
Hospitals where Calvin R. Graef Iii works
Medicare's Facility Affiliation Data lists Calvin R. Graef Iii 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.
- University of Colorado Hospital AuthorityAurora, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060024
Practice locations
Addresses where Calvin R. Graef Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 12605 E 16th Ave, Uchealth Anschutz Medical CampusAurora, CO 80045 (720) 848‑0000
Group practices
Medicare enrollment lists Calvin R. Graef Iii as a member of this group (CMS data updated October 2, 2026).
- University Physicians Incorporated3,215 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Other clinicians in University Physicians Incorporated
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Southern California College Of Optometry |
| Graduation year | 1997 (29 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962649954 |
| 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