Daniel Nelson, MD
NPI 1558820605 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Nelson, MD is a Internal Medicine Physician provider in Portland, OR (NPI 1558820605).
Provider details
- NPI number
- 1558820605
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD219329 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
28 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $105 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 13 | $102 |
Typical Medicare-allowed amounts for these services range $102–$105 (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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 71 | 25 |
| Lisinopril | 39 | 20 |
| Amlodipine Besylate | 31 | 15 |
| Apixabanbrand: Eliquis | 25 | — |
| Losartan Potassium | 24 | — |
| Rosuvastatin Calcium | 23 | — |
| Simvastatin |
Practice location
Mailing address
Additional practice locations (1)
- 485 Arsenal StWatertown, MA 02472-5091Phone: (617) 972-5100
Registry dates
- Enumerated
- 2019-03-18
- Last updated
- 2024-07-24
- Certified
- 2024-07-24
Frequently asked questions
- What is Daniel Nelson's NPI number?
- Daniel Nelson's National Provider Identifier (NPI) is 1558820605, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Nelson's specialty?
- Daniel Nelson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Nelson located?
- Daniel Nelson's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011.
- What is Daniel Nelson's phone number?
- The practice phone number listed in the NPPES registry for Daniel Nelson is (503) 494-8562.
- Does Daniel Nelson accept Medicare?
- Daniel Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Nelson's NPI active?
- Yes — Daniel Nelson's NPI (1558820605) is active in the NPPES registry as of the last update on 2024-07-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.