Stella Thalhamer, MD
NPI 1366531329 · Internal Medicine Physician · Olympia, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stella Thalhamer, MD is a Internal Medicine Physician provider in Olympia, WA (NPI 1366531329).
Provider details
- NPI number
- 1366531329
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00044353 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,255 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 625 | $127 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 200 | $127 |
| Remote Monitoring of Physiologic Parameters, Initial Supply of Devices With Daily Recordings Or Programmed Alerts Transmission, Each 30 Days99454 | 142 | $48 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 87 | $179 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 83 | $89 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 716 | 191 |
| Levothyroxine Sodium | 441 | 118 |
| Lisinopril | 406 | 107 |
| Amlodipine Besylate | 357 | 102 |
| Losartan Potassium | 349 | 94 |
| Rosuvastatin Calcium | 274 | 80 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-11
- Last updated
- 2021-04-08
- Certified
- 2021-04-08
Frequently asked questions
- What is Stella Thalhamer's NPI number?
- Stella Thalhamer's National Provider Identifier (NPI) is 1366531329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stella Thalhamer's specialty?
- Stella Thalhamer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stella Thalhamer located?
- Stella Thalhamer's practice location on file with NPPES is 525 Lilly Rd Ne Ste 250, Olympia, WA 98506-5101.
- What is Stella Thalhamer's phone number?
- The practice phone number listed in the NPPES registry for Stella Thalhamer is (360) 493-5255.
- Does Stella Thalhamer accept Medicare?
- Stella Thalhamer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stella Thalhamer's NPI active?
- Yes — Stella Thalhamer's NPI (1366531329) is active in the NPPES registry as of the last update on 2021-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.