Michael J Tierney, MD
Emergency Medicine · Fremont
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 12
- 1 carrier
- Office
- 1
Offices
1 location · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Plans that list them
12 plans · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Tierney’s office at (510) 490-1222 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Alignment Health BreathEasy (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Clarity (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Harmony (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes CalPlus (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Heart & Diabetes Care (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Heart & Diabetes Choice (HMO C-SNP) | Alignment Health Plan | Listed | Sep 28, 2026 |
| Alignment Health Honor+ Plan (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health My Choice CalCare (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health Silicon (HMO C-SNP) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health smartHMO (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| Alignment Health the ONE (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
California Medical Board record
Licence C55929 · Current
Licensed to practise in California · since 2013 · expires 2028-10-31 · State University of New York at Stony Brook Health Sciences Center.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$37,773
Medicare paid this office $37,773 for 322 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 91 | $10,600 | $112 |
| New patient visit (30+ min) | 109 | $10,291 | $94 |
| Short return visit (20+ min) | 107 | $8,799 | $76 |
| 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 | 24 | $3,355 | $140 |
| New patient visit (45+ min) | 12 | $1,918 | $160 |
See all 8 services
| Return visit (30+ min) | 91 | $10,600 | $112 |
| New patient visit (30+ min) | 109 | $10,291 | $94 |
| Short return visit (20+ min) | 107 | $8,799 | $76 |
| 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 | 24 | $3,355 | $140 |
| New patient visit (45+ min) | 12 | $1,918 | $160 |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | 14 | $227 | $16 |
| Injection of drug or substance under skin or into muscle | 11 | $144 | $13 |
| Automated urinalysis test | 17 | $37 | $2 |
Procedures Medicare counted
| Removal of nail tissue | 1-10 | None |
| Removal of skin lesions | 1-10 | None |
| Removal of tissue | 1-10 | None |
Who their Medicare patients are
322 Original Medicare patients in 2024. Average age 76 · Women 57% · Also on Medicaid 6% · Health risk score 0.92. At or below the middle of the specialty; the typical emergency medicine clinician is at 2.01.
Conditions among them: High blood pressure 66% · Diabetes 23% · Coronary heart disease 22% · Chronic kidney disease 18% · Atrial fibrillation 17% · Cancer 16% · Depression 15% · COPD 9% · Heart failure 8% · Stroke 6% · Dementia 5%.
The office billed $134,047, Medicare allowed $51,840 and paid $37,773; for 510 services of 42 kinds; $48 of it was for drugs given in the office and $37,725 for care.
Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.
Year by year
| 2024 | 322 | 510 | 76 | 0.92 | $134,047 | $37,773 |
| 2023 | 352 | 568 | 76 | 0.97 | $134,760 | $39,711 |
| 2022 | 318 | 523 | 75 | 0.99 | $103,743 | $30,351 |
| 2021 | 263 | 454 | 76 | 0.91 | $88,840 | $28,967 |
| 2020 | 222 | 340 | 75 | 1.18 | $67,579 | $18,089 |
| 2019 | 216 | 356 | 76 | 1.10 | $70,750 | $18,650 |
| 2018 | 131 | 1,065 | 76 | 1.14 | $37,225 | $10,303 |
Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.
See the services billed each year
2023: 8 services
| Short return visit (20+ min) | 153 | $12,782 | $78 |
| Return visit (30+ min) | 102 | $11,499 | $108 |
| New patient visit (30+ min) | 88 | $8,121 | $92 |
| 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 | $2,376 | $140 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 19 | $955 | $50 |
| Injection of drug or substance under skin or into muscle | 15 | $216 | $13 |
| Automated urinalysis test | 20 | $48 | $2 |
| Urinalysis, manual test | 12 | $41 | $3 |
2022: 9 services
| Short return visit (20+ min) | 181 | $14,526 | $78 |
| Return visit (30+ min) | 44 | $4,791 | $106 |
| New patient visit (15+ min) | 59 | $3,118 | $53 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 21 | $1,117 | $51 |
| New patient visit (30+ min) | 12 | $975 | $81 |
| Injection of drug or substance under skin or into muscle | 17 | $217 | $13 |
| Urinalysis, manual test | 17 | $59 | $3 |
| Automated urinalysis test | 16 | $38 | $2 |
| Injection, ceftriaxone sodium, per 250 mg | 11 | $16 | None |
2021: 8 services
| Short return visit (20+ min) | 140 | $12,321 | $84 |
| Return visit (30+ min) | 31 | $4,197 | $127 |
| Long return visit (40+ min) | 18 | $3,217 | $169 |
| New patient visit (15+ min) | 40 | $2,460 | $62 |
| Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen | 32 | $1,642 | $51 |
| New patient visit (30+ min) | 19 | $1,469 | $77 |
| Urinalysis, manual test | 19 | $66 | $3 |
| Insertion of needle into vein for collection of blood sample | 14 | $42 | $3 |
2020: 7 services
| Short return visit (20+ min) | 122 | $8,297 | $66 |
| Return visit (30+ min) | 56 | $5,067 | $89 |
| New patient visit (15+ min) | 25 | $1,388 | $56 |
| New patient visit (30+ min) | 13 | $1,056 | $81 |
| Urinalysis, manual test | 13 | $45 | $3 |
| Insertion of needle into vein for collection of blood sample | 11 | $33 | $3 |
| Automated urinalysis test | 11 | $25 | $2 |
2019: 6 services
| Return visit (30+ min) | 63 | $6,129 | $97 |
| Short return visit (20+ min) | 82 | $4,623 | $53 |
| New patient visit (30+ min) | 34 | $3,283 | $97 |
| New patient visit (45+ min) | 13 | $1,841 | $142 |
| New patient visit (15+ min) | 23 | $1,240 | $54 |
| Automated urinalysis test | 13 | $34 | $2 |
2018: 2 services
| Short return visit (20+ min) | 89 | $5,461 | $61 |
| Return visit (30+ min) | 36 | $3,608 | $100 |
Drugs they prescribed that Part D paid
$3,548
Pharmacies billed $3,548 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
160 generic and fewer than 11 brand-name prescriptions · $3,548 in drug cost · 86 antibiotic prescriptions to 74 people.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
| Cephalexin | 21 | $161 | $7 |
| Azithromycin | 15 | $98 | $7 |
| Amoxicillin-Clavulanate Potass | 14 | $51 | $3 |
Year by year
| 2024 | 189 | 149 | None | None | $3,548 |
| 2023 | 183 | 142 | None | 7% | $2,814 |
| 2022 | 150 | 124 | None | None | $2,341 |
| 2021 | 108 | 78 | None | 19% | $6,432 |
| 2020 | 62 | 53 | None | None | $2,831 |
| 2019 | 102 | 81 | None | 13% | $2,786 |
| 2018 | 52 | 42 | None | None | $2,208 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 3 drugs
| Paxlovid (Eua) | 12 | $107 | $9 |
| Amoxicillin-Clavulanate Potass | 17 | $97 | $6 |
| Azithromycin | 15 | $75 | $5 |
2022: 3 drugs
| Cephalexin | 20 | $179 | $9 |
| Amoxicillin-Clavulanate Potass | 14 | $146 | $10 |
| Azithromycin | 17 | $94 | $6 |
2021: 1 drug
| Cephalexin | 13 | $88 | $7 |
2020: 1 drug
| Cephalexin | 11 | $86 | $8 |
2019: 1 drug
| Cephalexin | 13 | $116 | $9 |
Professional record
- NPI
- 1104872415
- Licence
- CA C55929California C55929: Current · expires 2028-10-31
- Trained
- State University of New York at Stony Brook, School of Medicine, 1999
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Internal medicine (207R00000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2006-05-26
- NPI last updated
- 2020-02-18
- NPI record certified
- 2020-02-18
This is when the NPI record was last certified, not a medical board exam.