Sheri Marquez, MD
NPI 1538149224 · Radiation Oncology Physician · Santa Maria, CA
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheri Marquez, MD is a Radiation Oncology Physician provider in Santa Maria, CA (NPI 1538149224).
Provider details
- NPI number
- 1538149224
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A60841 (CA)
Specialties & taxonomies
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
283 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) |
|---|---|---|
| Calculation of Radiation Therapy Dose77300 | 96 | $75 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 63 | $205 |
| Continuing Radiation Therapy Consultation Per Week77336 | 62 | $105 |
| X-Ray During Radiation Therapy77417 | 36 | $18 |
| Obtaining Data Needed to Develop the Optimal Radiation Treatment, 3 Or More Treatment Areas Or Any Number of Treatment Areas Where Special Treatment Is Involved77290 | 13 | $525 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 13 | $240 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 67 | 28 |
| Gabapentin | 32 | 16 |
| Pilocarpine Hcl | 30 | — |
| Bicalutamide | 30 | 11 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 20 | — |
| Ibuprofen | 19 | — |
| Famotidine | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (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
- 2006-01-19
- Last updated
- 2007-10-01
Frequently asked questions
- What is Sheri Marquez's NPI number?
- Sheri Marquez's National Provider Identifier (NPI) is 1538149224, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheri Marquez's specialty?
- Sheri Marquez is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Sheri Marquez located?
- Sheri Marquez's practice location on file with NPPES is 314 S Stratford Ave, Santa Maria, CA 93454-5903.
- What is Sheri Marquez's phone number?
- The practice phone number listed in the NPPES registry for Sheri Marquez is (805) 925-2529.
- Does Sheri Marquez accept Medicare?
- Sheri Marquez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheri Marquez's NPI active?
- Yes — Sheri Marquez's NPI (1538149224) is active in the NPPES registry as of the last update on 2007-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.