A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Greider’s office at (408) 871-3400 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
Plans whose provider directory lists this clinician
Licensed to practise in California · since 1984 · expires 2028-05-31 · New York Medical College, New York.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$22,006
Medicare paid this office $22,006 for 150 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
Largest Original Medicare bills
New patient visit (45+ min)
32
$4,361
$136
Return visit (30+ min)
32
$4,087
$120
New patient visit (30+ min)
43
$3,889
$90
Short return visit (20+ min)
37
$3,298
$82
Long return visit (40+ min)
12
$2,069
$172
See all 8 services
Every Original Medicare service billed
New patient visit (45+ min)
32
$4,361
$136
Return visit (30+ min)
32
$4,087
$120
New patient visit (30+ min)
43
$3,889
$90
Short return visit (20+ min)
37
$3,298
$82
Long return visit (40+ min)
12
$2,069
$172
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
29
$1,559
$50
Detection test by immunoassay with direct visual observation for influenza virus
29
$957
$16
Urinalysis, manual test
19
$65
$3
Who their Medicare patients are
150 Original Medicare patients in 2024. Average age 74 · Under 65 8% · 85 and older 17% · Women 61% · Also on Medicaid 13% · Health risk score 1.03. At or below the middle of the specialty; the typical family practice clinician is at 1.13.
The office billed $94,971, Medicare allowed $29,124 and paid $22,006; for 323 services of 23 kinds.
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
Original Medicare by year
2024
150
323
74
1.03
$94,971
$22,006
2023
17
39
72
1.15
$10,221
$3,157
2019
16
30
79
0.75
$6,530
$2,579
2018
33
69
74
0.79
$15,070
$6,116
2017
33
84
76
0.68
$17,338
$6,494
2016
32
117
75
0.67
$25,980
$10,181
2015
21
30
79
0.81
$11,930
$1,593
2014
38
99
76
0.91
$31,455
$6,449
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
2019: 1 service
Original Medicare services billed in 2019
Return visit (30+ min)
15
$2,320
$83
2018: 1 service
Original Medicare services billed in 2018
Return visit (30+ min)
29
$5,004
$85
2017: 1 service
Original Medicare services billed in 2017
Return visit (30+ min)
30
$5,883
$78
2016: 1 service
Original Medicare services billed in 2016
Return visit (30+ min)
31
$8,545
$88
2015: 1 service
Original Medicare services billed in 2015
Return visit (30+ min)
19
$1,071
$49
2014: 2 services
Original Medicare services billed in 2014
Short return visit (20+ min)
34
$3,930
$55
Return visit (30+ min)
21
$2,423
$93
Drugs they prescribed that Part D paid
$9,138
Pharmacies billed $9,138 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
392 generic and fewer than 11 brand-name prescriptions · $9,138 in drug cost · 108 antibiotic prescriptions to 85 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.
Largest Part D drug costs
Losartan
32
$306
$10
Cephalexin
29
$283
$10
Clarithromycin
19
$264
$14
Fluticasone Propionate
17
$247
$15
Gabapentin
15
$208
$14
See all 13 drugs
Every Part D drug this clinician prescribed
Losartan
32
$306
$10
Cephalexin
29
$283
$10
Clarithromycin
19
$264
$14
Fluticasone Propionate
17
$247
$15
Gabapentin
15
$208
$14
Nitrofurantoin Mono-Macro
14
$185
$13
Metformin
18
$176
$10
Atorvastatin
22
$165
$7
Ciprofloxacin
16
$78
$5
Hydrochlorothiazide
11
$78
$7
Ibuprofen
15
$48
$3
Amoxicillin-Clavulanate Potass
12
$46
$4
Sulfamethoxazole-Trimethoprim
13
$42
$3
Year by year
Part D prescribing by year
2024
417
153
—None
—None
$9,138
2023
319
45
—None
—None
$13,365
2022
321
34
3% (11)
4%
$15,654
2021
358
32
6% (20)
6%
$13,149
2020
306
31
—None
—None
$11,886
2019
299
30
—None
5%
$13,599
2018
284
30
—None
7%
$14,870
2017
286
26
—None
11%
$13,714
2016
310
32
—None
12%
$17,479
2015
298
34
—None
19%
$23,762
2014
279
24
0% (0)
29%
$31,644
2013
209
22
—None
22%
$21,146
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 10 drugs
Part D drugs prescribed in 2023
Rosuvastatin
11
$961
$87
Losartan
41
$738
$18
Metoprolol
12
$410
$34
Metformin
22
$218
$10
Ketoconazole
13
$162
$12
Atorvastatin
23
$132
$6
Cephalexin
12
$110
$9
Gabapentin
12
$98
$8
Hydrochlorothiazide
12
$69
$6
Alprazolam
12
$59
$5
2022: 10 drugs
Part D drugs prescribed in 2022
Rosuvastatin
12
$1,241
$103
Losartan
42
$839
$20
Atorvastatin
19
$452
$24
Metoprolol
13
$377
$29
Metformin
21
$308
$15
Metoprolol
12
$153
$13
Ketoconazole
13
$86
$7
Hydrochlorothiazide
14
$84
$6
Tramadol
11
$24
$2
Metoclopramide
11
$16
$1
2021: 9 drugs
Part D drugs prescribed in 2021
Losartan
45
$894
$20
Atorvastatin
26
$621
$24
Metoprolol
11
$286
$26
Metformin
21
$226
$11
Amlodipine Besylate
12
$167
$14
Metoprolol
19
$167
$9
Hydrochlorothiazide
18
$100
$6
Ketoconazole
12
$83
$7
Metoclopramide
13
$20
$2
2020: 9 drugs
Part D drugs prescribed in 2020
Losartan
41
$877
$21
Atorvastatin
38
$581
$15
Metoprolol
13
$362
$28
Metformin
22
$249
$11
Amlodipine Besylate
16
$152
$10
Hydrochlorothiazide
12
$150
$13
Ketoconazole
12
$138
$12
Metoprolol
13
$87
$7
Diazepam
11
$13
$1
2019: 10 drugs
Part D drugs prescribed in 2019
Losartan
37
$573
$15
Atorvastatin
25
$466
$19
Metformin
23
$326
$14
Ketoconazole
11
$110
$10
Clopidogrel
13
$104
$8
Amlodipine Besylate
14
$103
$7
Alendronate
14
$78
$6
Furosemide
12
$57
$5
Carvedilol
11
$35
$3
Citalopram Hbr
11
$17
$2
2018: 7 drugs
Part D drugs prescribed in 2018
Atorvastatin
33
$610
$18
Losartan
29
$307
$11
Metformin
23
$243
$11
Furosemide
17
$143
$8
Clopidogrel
21
$118
$6
Carvedilol
12
$55
$5
Citalopram Hbr
13
$18
$1
2017: 10 drugs
Part D drugs prescribed in 2017
Atorvastatin
24
$720
$30
Metformin
31
$300
$10
Ramipril
11
$256
$23
Clopidogrel
21
$180
$9
Hydrochlorothiazide
13
$119
$9
Losartan
18
$108
$6
Simvastatin
12
$104
$9
Carvedilol
12
$55
$5
Furosemide
12
$46
$4
Citalopram Hbr
12
$13
$1
2016: 6 drugs
Part D drugs prescribed in 2016
Atorvastatin
22
$786
$36
Metformin
25
$298
$12
Amlodipine Besylate
14
$293
$21
Clopidogrel
22
$270
$12
Losartan
21
$156
$7
Diazepam
13
$53
$4
2015: 12 drugs
Part D drugs prescribed in 2015
Spiriva
13
$3,957
$304
Escitalopram
11
$487
$44
Atorvastatin
19
$440
$23
Ramipril
11
$406
$37
Metformin
28
$187
$7
Amlodipine Besylate
11
$173
$16
Clopidogrel
13
$167
$13
Hydrochlorothiazide
12
$118
$10
Losartan
13
$95
$7
Gabapentin
12
$76
$6
Diazepam
12
$41
$3
Citalopram Hbr
12
$40
$3
2014: 9 drugs
Part D drugs prescribed in 2014
Spiriva
22
$6,840
$311
Advair Diskus
17
$6,753
$397
Nexium
11
$2,670
$243
Ramipril
15
$535
$36
Atorvastatin
15
$340
$23
Fluticasone Propionate
11
$186
$17
Metformin
20
$178
$9
Losartan
19
$129
$7
Citalopram Hbr
12
$39
$3
2013: 8 drugs
Part D drugs prescribed in 2013
Advair Diskus
11
$4,558
$414
Nexium
11
$2,399
$218
Clarithromycin
14
$810
$58
Atorvastatin
17
$549
$32
Losartan
14
$337
$24
Nystatin
11
$193
$18
Metformin
18
$160
$9
Alendronate
13
$114
$9
Money from drug and device companies
$19 in 2025
Industry payments by year
2025
1
1
—None
$19
2020
5
5
—None
$103
2019
12
23
—None
$482
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.