Marian Thomas
NPI 1992380828 · Physician Assistant · Colton, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marian Thomas is a Physician Assistant provider in Colton, CA (NPI 1992380828).
Provider details
- NPI number
- 1992380828
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
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
5 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
13 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) |
|---|---|---|
| Replacement of Knee Joint, Both Sides of Knee27447 | 13 | $183 |
Typical Medicare-allowed amounts for these services range $183–$183 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-11
- Last updated
- 2021-07-02
- Certified
- 2021-07-02
Frequently asked questions
- What is Marian Thomas's NPI number?
- Marian Thomas's National Provider Identifier (NPI) is 1992380828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marian Thomas's specialty?
- Marian Thomas is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marian Thomas located?
- Marian Thomas's practice location on file with NPPES is 400 N Pepper Ave # 205, Colton, CA 92324-1801.
- What is Marian Thomas's phone number?
- The practice phone number listed in the NPPES registry for Marian Thomas is (909) 580-3390.
- Does Marian Thomas accept Medicare?
- Marian Thomas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marian Thomas's NPI active?
- Yes — Marian Thomas's NPI (1992380828) is active in the NPPES registry as of the last update on 2021-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.