David Maslen, MD
NPI 1033192521 · Internal Medicine Physician · Milwaukie, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Maslen, MD is a Internal Medicine Physician provider in Milwaukie, OR (NPI 1033192521).
Provider details
- NPI number
- 1033192521
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD19175 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
647 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 | 222 | $128 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 86 | $5 |
| 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 | 80 | $16 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 49 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 38 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 347 | 108 |
| Metoprolol Succinate | 198 | 58 |
| Losartan Potassium | 197 | 59 |
| Levothyroxine Sodium | 183 | 50 |
| Lisinopril | 161 | 46 |
| Tamsulosin Hcl | 151 | 40 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-29
- Last updated
- 2024-09-05
- Certified
- 2024-09-05
Frequently asked questions
- What is David Maslen's NPI number?
- David Maslen's National Provider Identifier (NPI) is 1033192521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Maslen's specialty?
- David Maslen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Maslen located?
- David Maslen's practice location on file with NPPES is 10024 Se 32nd Ave, Milwaukie, OR 97222-6514.
- What is David Maslen's phone number?
- The practice phone number listed in the NPPES registry for David Maslen is (503) 659-4988.
- Does David Maslen accept Medicare?
- David Maslen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Maslen's NPI active?
- Yes — David Maslen's NPI (1033192521) is active in the NPPES registry as of the last update on 2024-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.