Peggy Maasjo, NP
NPI 1508883117 · Nurse Practitioner · Detroit Lakes, MN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peggy Maasjo, NP is a Nurse Practitioner provider in Detroit Lakes, MN (NPI 1508883117).
Provider details
- NPI number
- 1508883117
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- R0876577 (MN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
1,717 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 | 324 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 216 | $106 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 189 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 186 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 163 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 152 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 135 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 534 | 151 |
| Omeprazole | 423 | 105 |
| Lisinopril | 393 | 109 |
| Metoprolol Succinate | 351 | 89 |
| Levothyroxine Sodium | 339 | 87 |
| Amlodipine Besylate | 327 | 84 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-17
- Last updated
- 2008-09-11
Frequently asked questions
- What is Peggy Maasjo's NPI number?
- Peggy Maasjo's National Provider Identifier (NPI) is 1508883117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peggy Maasjo's specialty?
- Peggy Maasjo is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Peggy Maasjo located?
- Peggy Maasjo's practice location on file with NPPES is 1245 Washington Ave, Detroit Lakes, MN 56501-3905.
- What is Peggy Maasjo's phone number?
- The practice phone number listed in the NPPES registry for Peggy Maasjo is (218) 846-2000.
- Does Peggy Maasjo accept Medicare?
- Peggy Maasjo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peggy Maasjo's NPI active?
- Yes — Peggy Maasjo's NPI (1508883117) is active in the NPPES registry as of the last update on 2008-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.