Douglas A. Tucker, MD
Internal Medicine Physician · Sunnyvale, CA
Douglas A. Tucker, MD is an internal medicine physician with a practice address in Sunnyvale, California, and NPI 1619057593, issued on Oct 16, 2006. Check the license (California A53759, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Douglas A. Tucker
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A53759 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Old San Francisco Road, Sunnyvale, CA 94086
- Phone
- (408) 739-6000
- Enumerated
- Oct 16, 2006
- Record last updated
- Dec 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 00A537590 CA
- Medicare enrollment
- Enrolled (PECOS I20050607000657); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 301 Old San Francisco Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia Weller, M.D.Anesthesiology Physician1750483830
Verify Douglas A. Tucker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A53759Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
155 Medicare Part D claims for 142 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Doxycycline Hyclate21 claims
- Nitrofurantoin Mono-Macro13 claims
- Ciprofloxacin Hcl12 claims
- Sulfamethoxazole-Trimethoprim12 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.
Industry payments in 2024: $132.63
1 payment: food and beverage; the largest payer was Stryker Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationLos Gatos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
48 internal medicine physician records list a practice address in Sunnyvale
They are 48 of the 1,690 NPPES records with a practice address in Sunnyvale, and 17,696 internal medicine physician records in California.
All 48 in Sunnyvale → All 17,696 in California → Every provider in Sunnyvale →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Douglas A. Tucker, MD's NPI number?
Douglas A. Tucker, MD's National Provider Identifier (NPI) is 1619057593, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas A. Tucker, MD located?
The NPPES record lists a practice address at 301 Old San Francisco Road, Sunnyvale, CA, 94086. Phone: (408) 739-6000. Providers update this record themselves, so call before visiting.
How can I verify Douglas A. Tucker, MD's license?
NPPES lists California license number A53759, 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 Douglas A. Tucker, MD prescribe under Medicare Part D?
In 2024, Douglas A. Tucker, MD had 155 Medicare Part D claims for 142 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.