Marjorie Kelvin, MD
NPI 1801946629 · Internal Medicine Physician · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marjorie Kelvin, MD is a Internal Medicine Physician provider in Santa Rosa, CA (NPI 1801946629).
Provider details
- NPI number
- 1801946629
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G76587 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 127 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 396 | 145 |
| Atorvastatin Calcium | 386 | 167 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 350 | 63 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 273 | 151 |
| Lisinopril | 271 | 112 |
| Losartan Potassium | 247 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-12
- Last updated
- 2022-02-14
Frequently asked questions
- What is Marjorie Kelvin's NPI number?
- Marjorie Kelvin's National Provider Identifier (NPI) is 1801946629, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marjorie Kelvin's specialty?
- Marjorie Kelvin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marjorie Kelvin located?
- Marjorie Kelvin's practice location on file with NPPES is 401 Bicentennial Way, Santa Rosa, CA 95403-2149.
- What is Marjorie Kelvin's phone number?
- The practice phone number listed in the NPPES registry for Marjorie Kelvin is (707) 571-4000.
- Does Marjorie Kelvin accept Medicare?
- Marjorie Kelvin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marjorie Kelvin's NPI active?
- Yes — Marjorie Kelvin's NPI (1801946629) is active in the NPPES registry as of the last update on 2022-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.