Robert Marshall
NPI 1841696515 · Medical Physician Assistant · Oroville, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Marshall is a Medical Physician Assistant provider in Oroville, CA (NPI 1841696515).
Provider details
- NPI number
- 1841696515
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- PA52853 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
214 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 143 | $76 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 31 | $91 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 21 | $35 |
| X-Ray of Chest, 2 Views71046 | 19 | $28 |
Typical Medicare-allowed amounts for these services range $28–$91 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 59 | 59 |
| Doxycycline Monohydrate | 50 | 49 |
| Prednisone | 49 | 47 |
| Cephalexin | 48 | 47 |
| Dexamethasone | 34 | 34 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 23 | 23 |
| Cefadroxil | 21 | 21 |
Practice location
Mailing address
Additional practice locations (1)
- 1621 W Imola AveNapa, CA 94559-4721Phone: (707) 358-6781
Registry dates
- Enumerated
- 2014-11-07
- Last updated
- 2022-02-11
- Certified
- 2021-03-29
Frequently asked questions
- What is Robert Marshall's NPI number?
- Robert Marshall's National Provider Identifier (NPI) is 1841696515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Marshall's specialty?
- Robert Marshall is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Marshall located?
- Robert Marshall's practice location on file with NPPES is 2450 Oro Dam Blvd E, Oroville, CA 95966-6052.
- What is Robert Marshall's phone number?
- The practice phone number listed in the NPPES registry for Robert Marshall is (530) 712-2310.
- Does Robert Marshall accept Medicare?
- Robert Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Marshall's NPI active?
- Yes — Robert Marshall's NPI (1841696515) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.