Ronald Popper, M.D. F.C.C.P.
NPI 1336162957 · Sleep Medicine (Internal Medicine) Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Sleep Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Popper, M.D. F.C.C.P. is a Sleep Medicine (Internal Medicine) Physician provider in Thousand Oaks, CA (NPI 1336162957).
Provider details
- NPI number
- 1336162957
- Entity type
- Individual
- Primary specialty
- Sleep Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D. F.C.C.P.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A35734 (CA)
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 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
1,317 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 | 552 | $126 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 220 | $178 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 205 | $88 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 132 | $215 |
| Sleep Study in Sleep Lab (6 Years Or Older)95810 | 96 | $656 |
| Sleep Study in Sleep Lab With Continuous Airway Pressure (6 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 315 | 78 |
| Clonazepam | 119 | 24 |
| Pramipexole Di-Hclbrand: Pramipexole Dihydrochloride | 88 | 22 |
| Gabapentin Enacarbilbrand: Horizant | 39 | — |
| Modafinil | 31 | 11 |
| Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol | 29 | — |
| Montelukast Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$10,700 across 42 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
- 2006-07-25
- Last updated
- 2023-07-17
- Certified
- 2023-07-17
Frequently asked questions
- What is Ronald Popper's NPI number?
- Ronald Popper's National Provider Identifier (NPI) is 1336162957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Popper's specialty?
- Ronald Popper is listed in the NPPES registry with a primary specialty of Sleep Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Popper located?
- Ronald Popper's practice location on file with NPPES is 317 S Moorpark Rd, Thousand Oaks, CA 91361-1008.
- What is Ronald Popper's phone number?
- The practice phone number listed in the NPPES registry for Ronald Popper is (805) 557-9930.
- Does Ronald Popper accept Medicare?
- Ronald Popper is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Popper's NPI active?
- Yes — Ronald Popper's NPI (1336162957) is active in the NPPES registry as of the last update on 2023-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.