Doctor profile · Federal record
Dr. Michael Tierney, M.D.
Internal Medicine Physician (CMS: Emergency Medicine) · Los Gatos, CA
- NPI 1104872415
- Accepts Medicare
- 27 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
15400 Los Gatos Blvd
Los Gatos, CA 950322502
(408) 730-6200 - Mailing address
-
325 Distel Cir
Los Altos, CA 940221408
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- February 18, 2020
- Year of graduation
- 1999 — 27 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #C55929
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104872415. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
443
Distinct HCPCS
8
Medicare allowed
$50,423
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 163 | 153 | $111 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 106 | 102 | $156 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 88 | 88 | $137 | |
81003 |
Automated urinalysis test | 22 | 20 | $2 | |
87635 |
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 19 | 19 | $50 | |
87637 |
Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | 17 | 17 | $140 | |
96372 |
Injection of drug or substance under skin or into muscle | 16 | 15 | $18 | |
81002 |
Urinalysis, manual test | 12 | 12 | $3 |
In context: peer comparison
Among 17 peers in this city , average services per provider: 96. This provider delivers 4.6× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
44
Patients
43
Total drug cost
$279
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 17 | 16 | $97 |
| Azithromycin | Generic | 15 | 15 | $75 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 12 | 12 | $107 |
Frequently asked questions
What is Dr. Michael Tierney's medical specialty?
Dr. Michael Tierney practices Internal Medicine Physician in Los Gatos, CA.
Where does Dr. Michael Tierney practice?
Dr. Michael Tierney practices at 15400 Los Gatos Blvd, Los Gatos, CA 950322502. Office phone: 4087306200.
What is Dr. Michael Tierney's NPI?
Dr. Michael Tierney's National Provider Identifier (NPI) is 1104872415, issued by NPPES.
Does Dr. Michael Tierney accept Medicare assignment?
Yes. Dr. Michael Tierney accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Michael Tierney commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.