Doctor profile · Federal record
Dr. Timothy Offensend, MD
Internal Medicine Physician (CMS: Internal Medicine) · Specialist · San Mateo, CA
- NPI 1083667539
- Accepts Medicare
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
50 S San Mateo Dr Ste 120
San Mateo, CA 944013831
(650) 347-0063 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- December 30, 2019
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A053287
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083667539. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,057
Distinct HCPCS
8
Medicare allowed
$145,687
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 610 | 356 | $153 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 180 | 180 | $157 | |
G0008 |
Administration of influenza virus vaccine | 73 | 72 | $37 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 72 | 71 | $76 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 39 | 36 | $109 | |
G0009 |
Administration of pneumococcal vaccine | 38 | 38 | $35 | |
90671 |
Pneumococcal conjugate vaccine, 15 valent (pcv15), for intramuscular use | 30 | 30 | $241 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 15 | 15 | $198 |
In context: peer comparison
Among 7 peers in San Mateo Internal Medicine Physician, average services per provider: 186. This provider delivers 5.7× the peer median.Open Payments
Industry payments received
All-time total
$500
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| E.R. Squibb & Sons, L.L.C. | 1 | $500.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,554
Patients
990
Total drug cost
$474,817
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 581 | 160 | $7,844 |
| Amlodipine Besylate | Generic | 463 | 122 | $3,835 |
| Levothyroxine Sodium | Generic | 335 | 86 | $6,385 |
| Simvastatin | Generic | 330 | 86 | $4,084 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 251 | 76 | $4,730 |
| Ozempic (Semaglutide) | Brand | 218 | 50 | $345,317 |
| Tamsulosin Hcl | Generic | 209 | 60 | $4,792 |
| Lisinopril | Generic | 194 | 58 | $1,614 |
| Metformin Hcl | Generic | 164 | 49 | $2,361 |
| Gabapentin | Generic | 149 | 50 | $2,905 |
Hospital affiliations
Frequently asked questions
What is Dr. Timothy Offensend's medical specialty?
Dr. Timothy Offensend practices Internal Medicine Physician in San Mateo, CA.
Where does Dr. Timothy Offensend practice?
Dr. Timothy Offensend practices at 50 S San Mateo Dr Ste 120, San Mateo, CA 944013831. Office phone: 6503470063.
What is Dr. Timothy Offensend's NPI?
Dr. Timothy Offensend's National Provider Identifier (NPI) is 1083667539, issued by NPPES.
Does Dr. Timothy Offensend accept Medicare assignment?
Yes. Dr. Timothy Offensend accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Timothy Offensend commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.