Marjorie Kelvin, MD
Internal Medicine Physician · Santa Rosa, CA
Marjorie Kelvin, MD is an internal medicine physician with a practice address in Santa Rosa, California, and NPI 1801946629, issued on Jan 12, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marjorie Kelvin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 401 Bicentennial Way, Santa Rosa, CA 95403
- Phone
- (707) 571-4000
- Enumerated
- Jan 12, 2007
- Entity
- Type 1 · individual
Also registered at 401 Bicentennial Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Ackerman, RNRegistered Nurse1376409409
- Patricia AdamsPhysical Therapist1124971825
- Hugo Aguilar, PHARMDPharmacist1992389134
- Heather Aiello, OTR/LOccupational Therapist1851155022
- Sandra Akrawi, REGISTERED DIETITIANDietary Manager1790821031
- Miguel Alcala, LCSWClinical Social Worker1629857891
Verify Marjorie Kelvin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
7,658 Medicare Part D claims for 1,074 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 626 claims were for opioids.
Most prescribed
- Levothyroxine Sodium396 claims
- Atorvastatin Calcium386 claims
- Hydrocodone-Acetaminophen350 claims
- Albuterol Sulfate Hfa273 claims
- Lisinopril271 claims
- Losartan Potassium247 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital or facility affiliation
- Permanente Medical Group IncSanta Rosa, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
112 internal medicine physician records list a Santa Rosa practice address
They are 112 of the 6,884 NPPES records with a Santa Rosa practice address, and 20,403 internal medicine physician records in California.
All 112 in Santa Rosa → All 20,403 in California → Every provider in Santa Rosa →
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- Luba Abascal, MDSan Francisco, CA1023180874
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Common questions
What is Marjorie Kelvin, MD's NPI number?
Marjorie Kelvin, MD's National Provider Identifier (NPI) is 1801946629, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marjorie Kelvin, MD located?
The NPPES record lists a practice address at 401 Bicentennial Way, Santa Rosa, CA, 95403. Phone: (707) 571-4000. Providers update this record themselves, so call before visiting.
How can I verify Marjorie Kelvin, MD's license?
Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marjorie Kelvin, MD prescribe under Medicare Part D?
In 2024, Marjorie Kelvin, MD had 7,658 Medicare Part D claims for 1,074 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.