Kenneth Marvin, MD
NPI 1417035221 · Cardiovascular Disease Physician · Grass Valley, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kenneth Marvin, MD is a Cardiovascular Disease Physician provider in Grass Valley, CA (NPI 1417035221).
Provider details
- NPI number
- 1417035221
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G65886 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
47 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 35 | $66 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 12 | $125 |
Typical Medicare-allowed amounts for these services range $66–$125 (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
- 2006-11-01
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Kenneth Marvin's NPI number?
- Kenneth Marvin's National Provider Identifier (NPI) is 1417035221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kenneth Marvin's specialty?
- Kenneth Marvin is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Kenneth Marvin located?
- Kenneth Marvin's practice location on file with NPPES is 155 Glasson Way, Grass Valley, CA 95945-5723.
- What is Kenneth Marvin's phone number?
- The practice phone number listed in the NPPES registry for Kenneth Marvin is (530) 274-6000.
- Does Kenneth Marvin accept Medicare?
- Kenneth Marvin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kenneth Marvin's NPI active?
- Yes — Kenneth Marvin's NPI (1417035221) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.