Timothy Q. Offensend, MD
Internal Medicine Physician · San Mateo, CA
Timothy Q. Offensend, MD is an internal medicine physician with a practice address in San Mateo, California, and NPI 1083667539, issued on May 18, 2006. Check the license (California A053287, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy Q. Offensend
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A053287 CA
Self-reported in NPPES; status is on the state search - Practice location
- 50 S San Mateo Dr Ste 120, San Mateo, CA 94401
- Phone
- (650) 347-0063
- Enumerated
- May 18, 2006
- Record last updated
- Dec 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081202000757); accepts Medicare assignment
- Medical or professional school
- Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1987
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 50 S San Mateo Dr Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Hema Shah, MDInternal Medicine Physician1740235704
Verify Timothy Q. Offensend in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A053287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,553 Medicare Part D claims for 609 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 44 claims were for opioids.
Most prescribed
- Atorvastatin Calcium567 claims
- Amlodipine Besylate447 claims
- Levothyroxine Sodium352 claims
- Ozempic340 claims
- Simvastatin310 claims
- Metformin Hcl Er237 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: $500.00
1 payment: consulting fee; the largest payer was E.R. Squibb & Sons, L.L.C. 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 FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Q. Offensend among 17,696 internal medicine physician records in California
Timothy Q. Offensend, 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 fileYes · 63% of these records are
- Graduated1987 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 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).
44 internal medicine physician records list a practice address in San Mateo
They are 44 of the 3,909 NPPES records with a practice address in San Mateo, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Mateo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jack Bernstein, MDSan Mateo, CA 944011457301384
- Amy Daniher, M.D.San Mateo, CA 944011831121425
- Mary Dobbins, M.D.San Mateo, CA 944011407837693
- Terry Farrow, MDSan Mateo, CA 944011750427753
- Umesh Gheewala, M.D.San Mateo, CA 944011982608568
- Paul Jemelian, MDSan Mateo, CA 944011639190861
- Hoa Le, MDSan Mateo, CA 944011952356917
- Ian Lin, MDSan Mateo, CA 944011245306836
Common questions
What is Timothy Q. Offensend, MD's NPI number?
Timothy Q. Offensend, MD's National Provider Identifier (NPI) is 1083667539, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Q. Offensend, MD located?
The NPPES record lists a practice address at 50 S San Mateo Dr Ste 120, San Mateo, CA, 94401. Phone: (650) 347-0063. Providers update this record themselves, so call before visiting.
How can I verify Timothy Q. Offensend, MD's license?
NPPES lists California license number A053287, 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 Timothy Q. Offensend, MD prescribe under Medicare Part D?
In 2024, Timothy Q. Offensend, MD had 7,553 Medicare Part D claims for 609 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.