Steven Tenenbaum, M.D.
NPI 1023126661 · General Practice Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Tenenbaum, M.D. is a General Practice Physician provider in Thousand Oaks, CA (NPI 1023126661).
Provider details
- NPI number
- 1023126661
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A73555 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,926 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 770 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 608 | $89 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 330 | $177 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 99 | $61 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 64 | $138 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 99 | 27 |
| Ezetimibe | 66 | 22 |
| Levothyroxine Sodium | 58 | 17 |
| Gabapentin | 33 | 11 |
| Olmesartan Medoxomil | 32 | — |
| Lisinopril | 30 | — |
| Metformin Hcl | 29 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$637 across 15 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-25
- Last updated
- 2008-05-20
Frequently asked questions
- What is Steven Tenenbaum's NPI number?
- Steven Tenenbaum's National Provider Identifier (NPI) is 1023126661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Tenenbaum's specialty?
- Steven Tenenbaum is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Tenenbaum located?
- Steven Tenenbaum's practice location on file with NPPES is 1000 Newbury Rd, Thousand Oaks, CA 91320-6435.
- What is Steven Tenenbaum's phone number?
- The practice phone number listed in the NPPES registry for Steven Tenenbaum is (805) 584-9476.
- Does Steven Tenenbaum accept Medicare?
- Steven Tenenbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Tenenbaum's NPI active?
- Yes — Steven Tenenbaum's NPI (1023126661) is active in the NPPES registry as of the last update on 2008-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.