Theodore Marentis, M.D.
NPI 1740424134 · Diagnostic Radiology Physician · Carmichael, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theodore Marentis, M.D. is a Diagnostic Radiology Physician provider in Carmichael, CA (NPI 1740424134).
Provider details
- NPI number
- 1740424134
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301093810 (MI)
Specialties & taxonomies
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
17 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
2,709 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 678 | $9 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 443 | $80 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 230 | $22 |
| Ct Scan Head Or Brain Without Contrast70450 | 153 | $42 |
| Ct Scan of Upper Spine Without Contrast72125 | 115 | $48 |
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 68 | $1,925 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 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
- 2009-04-29
- Last updated
- 2014-09-22
Frequently asked questions
- What is Theodore Marentis's NPI number?
- Theodore Marentis's National Provider Identifier (NPI) is 1740424134, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theodore Marentis's specialty?
- Theodore Marentis is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Theodore Marentis located?
- Theodore Marentis's practice location on file with NPPES is 6501 Coyle Ave, Carmichael, CA 95608-0306.
- What is Theodore Marentis's phone number?
- The practice phone number listed in the NPPES registry for Theodore Marentis is (916) 537-5208.
- Does Theodore Marentis accept Medicare?
- Theodore Marentis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theodore Marentis's NPI active?
- Yes — Theodore Marentis's NPI (1740424134) is active in the NPPES registry as of the last update on 2014-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.