Quick answers
- Does Erica R. Drennen accept Medicare assignment?
- Yes. Medicare's clinician data says Erica R. Drennen 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 Erica R. Drennen see?
- In 2024, CMS data shows 15 Original Medicare patients and 27 services for Erica R. Drennen. This counts Original Medicare only and measures volume, not quality.
- What is Erica R. Drennen's NPI number?
- 1982804837. 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 Erica R. Drennen, 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 | 15 |
|---|---|
| Services billed to Medicare | 27 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Hospitals where Erica R. Drennen works
Medicare's Facility Affiliation Data lists Erica R. Drennen 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.
- AdventHealth ParkerParker, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060114
Practice locations
Addresses where Erica R. Drennen is enrolled with Medicare (CMS data updated October 2, 2026).
- 15901 E Briarwood Cir, 200 Csnh Primary CareAurora, CO 80016 (303) 269‑2626
- 15901 E Briarwood Cir Unit, 200 Csnh Womens HealthAurora, CO 80016 (720) 851‑8230
- 2535 S Downing StDenver, CO 80210 (303) 778‑5797
- 9395 Crown Crest BlvdParker, CO 80138
- 9403 Crown Crest Blvd, Suite 200Parker, CO 80138
Group practices
Medicare enrollment lists Erica R. Drennen as a member of this group (CMS data updated October 2, 2026).
- Portercare Adventist Health System774 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Other clinicians in Portercare Adventist Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Ohio State University College Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982804837 |
| 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