Tammy Mai, D.O.
NPI 1275821902 · Anesthesiology Physician · Portland, OR
Provider details
- NPI number
- 1275821902
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2011015606 (MO)
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
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
97 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) |
|---|---|---|
| Ultrasound of Heart With Probe in Esophagus, With Report93312 | 22 | $101 |
| Anesthesia for X-Ray on Artery of Brain, Heart, Or Chest01926 | 21 | $274 |
| Ultrasound of Heart Blood Flow, Valves and Chambers93320 | 21 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 21 | $3 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 12 | $41 |
Typical Medicare-allowed amounts for these services range $3–$274 (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.
Practice location
Mailing address
Additional practice locations (1)
- 3600 Nw Samaritan DrCorvallis, OR 97330-5472Phone: (541) 768-5111
Registry dates
- Enumerated
- 2011-07-15
- Last updated
- 2025-12-08
- Certified
- 2025-12-08
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.