Jonathan Nasseri, M.D.
NPI 1184669160 · Hospice and Palliative Medicine (Internal Medicine) Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Hospice/Palliative Care · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Nasseri, M.D. is a Hospice and Palliative Medicine (Internal Medicine) Physician provider in Thousand Oaks, CA (NPI 1184669160).
Provider details
- NPI number
- 1184669160
- Entity type
- Individual
- Primary specialty
- Hospice and Palliative Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 34611 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 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
1,766 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) |
|---|---|---|
| Advance Care Planning, First 30 Minutes99497 | 663 | $74 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 281 | $127 |
| Advance Care Planning, Each Additional 30 Minutes99498 | 233 | $70 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 210 | $171 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 144 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 113 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 92 | 11 |
| Lisinopril | 69 | — |
| Potassium Chloride | 65 | — |
| Baclofen | 58 | — |
| Tamsulosin Hcl | 55 | — |
| Famotidine | 55 | — |
| Levothyroxine Sodium | 50 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$39 across 2 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
- 2006-06-17
- Last updated
- 2015-12-15
Frequently asked questions
- What is Jonathan Nasseri's NPI number?
- Jonathan Nasseri's National Provider Identifier (NPI) is 1184669160, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Nasseri's specialty?
- Jonathan Nasseri is listed in the NPPES registry with a primary specialty of Hospice and Palliative Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Nasseri located?
- Jonathan Nasseri's practice location on file with NPPES is 1534 N Moorpark Rd, Thousand Oaks, CA 91360-5129.
- What is Jonathan Nasseri's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Nasseri is (805) 522-2500.
- Does Jonathan Nasseri accept Medicare?
- Jonathan Nasseri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Nasseri's NPI active?
- Yes — Jonathan Nasseri's NPI (1184669160) is active in the NPPES registry as of the last update on 2015-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.