Ellen Pacson, M.D.
NPI 1184940678 · Family Medicine Physician · Riverside, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Pacson, M.D. is a Family Medicine Physician provider in Riverside, CA (NPI 1184940678).
Provider details
- NPI number
- 1184940678
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 114 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 577 | 200 |
| Amlodipine Besylate | 270 | 89 |
| Lisinopril | 250 | 93 |
| Losartan Potassium | 238 | 86 |
| Levothyroxine Sodium | 232 | 75 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 164 | 38 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-09
- Last updated
- 2021-12-10
- Certified
- 2021-12-06
Frequently asked questions
- What is Ellen Pacson's NPI number?
- Ellen Pacson's National Provider Identifier (NPI) is 1184940678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Pacson's specialty?
- Ellen Pacson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ellen Pacson located?
- Ellen Pacson's practice location on file with NPPES is 10800 Magnolia Avebue, Riverside, CA 92505-9288.
- What is Ellen Pacson's phone number?
- The practice phone number listed in the NPPES registry for Ellen Pacson is (951) 353-4619.
- Does Ellen Pacson accept Medicare?
- Ellen Pacson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Pacson's NPI active?
- Yes — Ellen Pacson's NPI (1184940678) is active in the NPPES registry as of the last update on 2021-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.