Quick answers
- Does Alden Zwerling accept Medicare assignment?
- Medicare's clinician data says Alden Zwerling may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Alden Zwerling see?
- In 2024, CMS data shows 87 Original Medicare patients and 271 services for Alden Zwerling. This counts Original Medicare only and measures volume, not quality.
- What is Alden Zwerling's NPI number?
- 1316987852. 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 Alden Zwerling, 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 | 87 |
|---|---|
| Services billed to Medicare | 271 |
| Different services or procedures | 23 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)120 services
- New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)43 services
- Hemoglobin a1c level (83036)21 services
- Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit (G0438)16 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)12 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 pressure68%
- High cholesterol55%
- Depression40%
- Diabetes37%
- Arthritis36%
- Anxiety23%
Practice locations
Addresses where Alden Zwerling is enrolled with Medicare (CMS data updated October 2, 2026).
- 2087 S Federal BlvdDenver, CO 80219 (720) 463‑6754
- 5996 E 64th Ave, Oak Street Health Commerce CityCommerce City, CO 80022 (720) 463‑6758
Group practices
Medicare enrollment lists Alden Zwerling as a member of this group (CMS data updated October 2, 2026).
- Oak Street Health Physicians Group of Colorado PLLC36 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Other clinicians in Oak Street Health Physicians Group of Colorado PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Virginia Commonwealth University, School Of Medicine |
| Graduation year | 1979 (47 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1316987852 |
| 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
- 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