Philip Ostermann
NPI 1821235623 · Anesthesiology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Philip Ostermann is a Anesthesiology Physician provider in Thousand Oaks, CA (NPI 1821235623).
Provider details
- NPI number
- 1821235623
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A107004 (CA)
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
17 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
124 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 Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 26 | $36 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 23 | $130 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 23 | $339 |
| Anesthesia for Total Hip Replacement01214 | 20 | $362 |
| Anesthesia for Procedure on Small and Large Bowel Using an Endoscope00813 | 17 | $158 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 15 | $59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-01-15
- Last updated
- 2012-06-04
Frequently asked questions
- What is Philip Ostermann's NPI number?
- Philip Ostermann's National Provider Identifier (NPI) is 1821235623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Philip Ostermann's specialty?
- Philip Ostermann is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Philip Ostermann located?
- Philip Ostermann's practice location on file with NPPES is 215 W Janss Rd, Thousand Oaks, CA 91360-1847.
- What is Philip Ostermann's phone number?
- The practice phone number listed in the NPPES registry for Philip Ostermann is (805) 370-4521.
- Does Philip Ostermann accept Medicare?
- Philip Ostermann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Philip Ostermann's NPI active?
- Yes — Philip Ostermann's NPI (1821235623) is active in the NPPES registry as of the last update on 2012-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.