Aaron Chambers, MD
NPI 1215513999 · Family Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Chambers, MD is a Family Medicine Physician provider in Portland, OR (NPI 1215513999).
Provider details
- NPI number
- 1215513999
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD219142 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
36 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 19 | $127 |
| 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'SG2211 | 17 | $17 |
Typical Medicare-allowed amounts for these services range $17–$127 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 29 | 12 |
| Atorvastatin Calcium | 25 | — |
| Apixabanbrand: Eliquis | 21 | — |
| Losartan Potassium | 18 | — |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 15 | — |
| Metformin Hcl | 15 | — |
Practice location
Mailing address
Additional practice locations (1)
- 1825 Maple StForest Grove, OR 97116-1939Phone: (503) 357-2136Fax: (503) 813-3799
Registry dates
- Enumerated
- 2021-03-22
- Last updated
- 2026-02-23
- Certified
- 2026-02-23
Frequently asked questions
- What is Aaron Chambers's NPI number?
- Aaron Chambers's National Provider Identifier (NPI) is 1215513999, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Chambers's specialty?
- Aaron Chambers is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Chambers located?
- Aaron Chambers's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3098.
- What is Aaron Chambers's phone number?
- The practice phone number listed in the NPPES registry for Aaron Chambers is (503) 494-8211.
- Does Aaron Chambers accept Medicare?
- Aaron Chambers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Chambers's NPI active?
- Yes — Aaron Chambers's NPI (1215513999) is active in the NPPES registry as of the last update on 2026-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.