Amy J. Ewing, MD
Internal Medicine Physician · Novato, CA
Amy J. Ewing, MD is an internal medicine physician with a practice address in Novato, California, and NPI 1861576860, issued on Oct 25, 2006. Check the license (California A75595, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amy J. Ewing
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A75595 CA
Self-reported in NPPES; status is on the state search - Practice location
- 97 San Marin Dr, Novato, CA 94945
- Phone
- (415) 899-7400
- Enumerated
- Oct 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00A755950 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 97 San Marin Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kenneth Allen, RRT, RCPRegistered Respiratory Therapist1609346691
- Ziba Ansari-Jaberi, PHARM.D.Pharmacist1013001916
- Joanne Arauzo, PHARM DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1265756704
- Sanamjit Bains, RRTRegistered Respiratory Therapist1518438605
- Ellen Biera, RCT, RRT, RCPRegistered Respiratory Therapist1639950991
- Jane Burr, RNDiabetes Educator Registered Nurse1932246220
Verify Amy J. Ewing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75595Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
14 Medicare Part D claims for 14 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
- Adacel Tdap14 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.
Amy J. Ewing among 17,696 internal medicine physician records in California
Amy J. Ewing, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
27 internal medicine physician records list a practice address in Novato
They are 27 of the 934 NPPES records with a practice address in Novato, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Novato → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Conant, MDNovato, CA 949451568546539
- Shawn Donald, MDNovato, CA 949451801970876
- William Elliott, MDNovato, CA 949451144304122
- Barbara Finzen, M.D.Novato, CA 949451134225352
- Ranjit Hundal, M.D.Novato, CA 949451023107976
- Michael Kwok, M.D.Novato, CA 949451124119235
- Robert Lavaysse, MDNovato, CA 949451093899072
- Helen Man-Son-Hing, MDNovato, CA 949451033293022
Common questions
What is Amy J. Ewing, MD's NPI number?
Amy J. Ewing, MD's National Provider Identifier (NPI) is 1861576860, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amy J. Ewing, MD located?
The NPPES record lists a practice address at 97 San Marin Dr, Novato, CA, 94945. Phone: (415) 899-7400. Providers update this record themselves, so call before visiting.
How can I verify Amy J. Ewing, MD's license?
NPPES lists California license number A75595, as entered by the provider. 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 Amy J. Ewing, MD prescribe under Medicare Part D?
In 2024, Amy J. Ewing, MD had 14 Medicare Part D claims for 14 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.