Amanda Virginia Heywood Thornton, M.D.
Infectious Disease Physician · Vacaville, CA
Amanda Virginia Heywood Thornton, M.D. is an infectious disease physician with a practice address in Vacaville, California, and NPI 1760758726, issued on Mar 23, 2012. Check the license (California A120230, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Amanda Virginia Heywood Thornton
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A120230 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr FL B4, Vacaville, CA 95688
- Phone
- (707) 624-3473
- Enumerated
- Mar 23, 2012
- Record last updated
- Nov 5, 2024
- Fax
- (707) 624-3471
- Medicare enrollment
- Enrolled (PECOS I20151216002841); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 2010
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Verify Amanda Virginia Heywood Thornton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120230Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average infectious disease physician in 2024
304 Medicare Part D claims for 86 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Amoxicillin30 claims
- Doxycycline Monohydrate26 claims
- Azithromycin22 claims
- Biktarvy22 claims
- Genvoya14 claims
- Cefadroxil12 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.
Bills Medicare through one group practice
- Permanente Medical Group IncVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amanda Virginia Heywood Thornton among 1,119 infectious disease physician records in California
Amanda Virginia Heywood Thornton, M.D. is one of 1,119 infectious disease 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 2012, is newer than 74% of them.
- NPI issued2012 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2003 among the 735 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Vacaville → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Joseph Bick, M.D.Vacaville, CA 956871801088935
- Gregory Warner, D.O.Vacaville, CA 956871073704326
- Sudershan Singh, MDWoodland, CA 956951255597571
- Jose Mario D Fontanilla, M.D.Roseville, CA 956611164528469
- Ranjani Kalyan, M.D.Roseville, CA 956611669644563
- Bilal Naseer, M.DRoseville, CA 956611487770871
- Meryl Perez, M.D.Roseville, CA 956611962729251
- Javeed Siddiqui, MD, MPHRoseville, CA 956611770563967
Common questions
What is Amanda Virginia Heywood Thornton, M.D.'s NPI number?
Amanda Virginia Heywood Thornton, M.D.'s National Provider Identifier (NPI) is 1760758726, issued on Mar 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Amanda Virginia Heywood Thornton, M.D. located?
The NPPES record lists a practice address at 1 Quality Dr FL B4, Vacaville, CA, 95688. Phone: (707) 624-3473. Providers update this record themselves, so call before visiting.
How can I verify Amanda Virginia Heywood Thornton, M.D.'s license?
NPPES lists California license number A120230, 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 Amanda Virginia Heywood Thornton, M.D. prescribe under Medicare Part D?
In 2024, Amanda Virginia Heywood Thornton, M.D. had 304 Medicare Part D claims for 86 beneficiaries; the average among infectious disease physician prescribers was 689. 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.