Quick answers
- Does Dana M. Riker accept Medicare assignment?
- Medicare's clinician data says Dana M. Riker may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Dana M. Riker see?
- In 2024, CMS data shows 94 Original Medicare patients and 867 services for Dana M. Riker. This counts Original Medicare only and measures volume, not quality.
- What is Dana M. Riker's NPI number?
- 1093118960. 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 Dana M. Riker, 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 | 94 |
|---|---|
| Services billed to Medicare | 867 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)40 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)39 services
- X-ray of foot, minimum of 3 views (73630)24 services
- X-ray of ankle, minimum of 3 views (73610)17 services
- Application of short leg cast (29405)14 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 cholesterol74%
- High blood pressure67%
- Arthritis62%
- Anxiety28%
- Ischemic heart disease24%
- Diabetes23%
Practice locations
Addresses where Dana M. Riker is enrolled with Medicare (CMS data updated October 2, 2026).
- 33 Sewall StPortland, ME 04102 (207) 828‑2101
- 50 Forest Falls DrYarmouth, ME 04096
Group practices
Medicare enrollment lists Dana M. Riker as a member of these groups (CMS data updated October 2, 2026).
- Riverview Physical Therapy Limited Partnership63 clinicians in the group
- Orthopaedic Associates of Maine PA52 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Portland
Clinicians with the same Medicare primary specialty in Portland, ME — not a recommendation.
Other clinicians in Riverview Physical Therapy Limited Partnership
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Duke University School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1093118960 |
| 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