Andrew Gessel, D.O.
NPI 1124555966 · Internal Medicine Physician · Corvallis, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Gessel, D.O. is a Internal Medicine Physician provider in Corvallis, OR (NPI 1124555966).
Provider details
- NPI number
- 1124555966
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 40654 (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
9 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
539 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 292 | $113 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 117 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 72 | $110 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 46 | $47 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 12 | $165 |
Typical Medicare-allowed amounts for these services range $47–$165 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 24 | 20 |
| Gabapentin | 17 | 11 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 16 | — |
| Oxycodone Hcl | 16 | 15 |
| Trazodone Hcl | 15 | — |
| Metoprolol Succinate | 13 | 11 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-05-11
- Last updated
- 2021-01-14
- Certified
- 2021-01-14
Frequently asked questions
- What is Andrew Gessel's NPI number?
- Andrew Gessel's National Provider Identifier (NPI) is 1124555966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Gessel's specialty?
- Andrew Gessel is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Gessel located?
- Andrew Gessel's practice location on file with NPPES is 3600 Nw Samaritan Dr, Corvallis, OR 97330-3737.
- What is Andrew Gessel's phone number?
- The practice phone number listed in the NPPES registry for Andrew Gessel is (541) 768-5111.
- Does Andrew Gessel accept Medicare?
- Andrew Gessel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Gessel's NPI active?
- Yes — Andrew Gessel's NPI (1124555966) is active in the NPPES registry as of the last update on 2021-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.