Carol Marsh, RN-CNP
NPI 1750332177 · Nurse Practitioner · Duluth, MN
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carol Marsh, RN-CNP is a Nurse Practitioner provider in Duluth, MN (NPI 1750332177).
Provider details
- NPI number
- 1750332177
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN-CNP
- Sex
- Female
- Sole proprietor
- No
- License
- R084357-1 (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
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
31 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 | 20 | $75 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 11 | $18 |
Typical Medicare-allowed amounts for these services range $18–$75 (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 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 48 | 19 |
| Amlodipine Besylate | 21 | — |
| Ezetimibe | 20 | — |
| Atorvastatin Calcium | 17 | — |
| Rosuvastatin Calcium | 17 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2021-01-25
- Certified
- 2021-01-25
Frequently asked questions
- What is Carol Marsh's NPI number?
- Carol Marsh's National Provider Identifier (NPI) is 1750332177, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carol Marsh's specialty?
- Carol Marsh is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carol Marsh located?
- Carol Marsh's practice location on file with NPPES is 1001 E Superior St, Duluth, MN 55802-2207.
- What is Carol Marsh's phone number?
- The practice phone number listed in the NPPES registry for Carol Marsh is (218) 249-3057.
- Does Carol Marsh accept Medicare?
- Carol Marsh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carol Marsh's NPI active?
- Yes — Carol Marsh's NPI (1750332177) is active in the NPPES registry as of the last update on 2021-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.