Walter Thomas, MD
NPI 1952379463 · Family Medicine Physician · Simi Valley, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Thomas, MD is a Family Medicine Physician provider in Simi Valley, CA (NPI 1952379463).
Provider details
- NPI number
- 1952379463
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A34536 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
613 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 282 | $191 |
| Evaluation of Psychological Test, Each Additional Hour96131 | 147 | $88 |
| Evaluation of Psychological Test, First Hour96130 | 93 | $124 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 72 | $137 |
| Administration of a Standardized, Evidence-Based Social Determinants of Health Risk Assessment Tool, 5-15 MinutesG0136 | 19 | $21 |
Typical Medicare-allowed amounts for these services range $21–$191 (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 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 159 | 17 |
| Gabapentin | 147 | 35 |
| Buprenorphine Hcl | 130 | 18 |
| Lisinopril | 122 | 34 |
| Rosuvastatin Calcium | 117 | 43 |
| Atorvastatin Calcium | 115 | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,061 across 40 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
Additional practice locations (1)
- 2080 Newbury RdNewbury Park, CA 91320-3387Phone: (805) 499-0308
Registry dates
- Enumerated
- 2006-03-09
- Last updated
- 2019-12-17
- Certified
- 2019-12-17
Frequently asked questions
- What is Walter Thomas's NPI number?
- Walter Thomas's National Provider Identifier (NPI) is 1952379463, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Thomas's specialty?
- Walter Thomas is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Thomas located?
- Walter Thomas's practice location on file with NPPES is 1980 Sequoia Ave, Simi Valley, CA 93063-3167.
- What is Walter Thomas's phone number?
- The practice phone number listed in the NPPES registry for Walter Thomas is (805) 527-1804.
- Does Walter Thomas accept Medicare?
- Walter Thomas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Thomas's NPI active?
- Yes — Walter Thomas's NPI (1952379463) is active in the NPPES registry as of the last update on 2019-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.