Cynthia Marske, DO
NPI 1891721023 · Internal Medicine Physician · Corvallis, OR
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cynthia Marske, DO is a Internal Medicine Physician provider in Corvallis, OR (NPI 1891721023).
Provider details
- NPI number
- 1891721023
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A8560 (CA)
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 tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 160 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 348 | 92 |
| Levothyroxine Sodium | 312 | 70 |
| Gabapentin | 252 | 47 |
| Lisinopril | 235 | 66 |
| Amlodipine Besylate | 176 | 50 |
| Omeprazole | 160 | 37 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-22
- Last updated
- 2025-05-14
- Certified
- 2025-05-14
Frequently asked questions
- What is Cynthia Marske's NPI number?
- Cynthia Marske's National Provider Identifier (NPI) is 1891721023, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cynthia Marske's specialty?
- Cynthia Marske is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cynthia Marske located?
- Cynthia Marske's practice location on file with NPPES is 530 Nw 27th St, Corvallis, OR 97330.
- What is Cynthia Marske's phone number?
- The practice phone number listed in the NPPES registry for Cynthia Marske is (541) 766-6835.
- Does Cynthia Marske accept Medicare?
- Cynthia Marske is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cynthia Marske's NPI active?
- Yes — Cynthia Marske's NPI (1891721023) is active in the NPPES registry as of the last update on 2025-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.