A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Preising’s office at (415) 600-1020 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 1990 · expires 2027-12-31 · University of California, Davis School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Original Medicare doctor bills
$58,464
Medicare paid this office $58,464 for 374 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
Largest Original Medicare bills
Return visit (30+ min)
188
$22,853
$113
New patient visit (45+ min)
56
$7,898
$141
Long return visit (40+ min)
35
$5,500
$149
Short return visit (20+ min)
56
$4,646
$77
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
31
$4,473
$140
See all 13 services
Every Original Medicare service billed
Return visit (30+ min)
188
$22,853
$113
New patient visit (45+ min)
56
$7,898
$141
Long return visit (40+ min)
35
$5,500
$149
Short return visit (20+ min)
56
$4,646
$77
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
31
$4,473
$140
New patient visit (30+ min)
30
$2,713
$90
New patient visit (60+ min)
13
$2,523
$194
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
16
$1,353
$64
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
18
$905
$50
Injection of drug or substance under skin or into muscle
13
$214
$13
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
11
$178
$16
Automated urinalysis test
43
$103
$2
Injection, ceftriaxone sodium, per 250 mg
24
$48
—None
Who their Medicare patients are
374 Original Medicare patients in 2024. Average age 78 · Women 57% · Also on Medicaid 5% · Health risk score 1.01. At or below the middle of the specialty; the typical family practice clinician is at 1.13.
The office billed $210,368, Medicare allowed $78,817 and paid $58,464; for 1,658 services of 61 kinds; $419 of it was for drugs given in the office and $58,045 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
Original Medicare by year
2024
374
1,658
78
1.01
$210,368
$58,464
2023
386
3,183
78
1.01
$222,400
$61,298
2022
353
4,437
78
0.94
$202,732
$57,757
2021
346
5,878
78
1.00
$211,416
$65,988
2020
168
1,260
78
1.02
$72,759
$19,539
2019
317
1,496
76
1.12
$156,261
$42,931
2018
320
2,252
77
1.01
$174,570
$48,550
2017
298
1,307
77
1.06
$134,010
$36,792
2016
297
1,376
76
1.15
$137,978
$38,046
2015
243
849
77
1.01
$101,026
$26,890
2014
332
1,377
76
1.01
$151,761
$40,911
2013
381
3,905
76
1.11
$182,111
$49,709
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: 13 services
Original Medicare services billed in 2023
Return visit (30+ min)
171
$19,800
$111
Long return visit (40+ min)
50
$9,223
$171
New patient visit (45+ min)
61
$8,562
$140
Short return visit (20+ min)
72
$5,953
$79
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
21
$2,935
$140
New patient visit (60+ min)
15
$2,797
$186
New patient visit (30+ min)
18
$1,751
$97
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
34
$1,710
$50
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
15
$1,195
$70
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
16
$259
$16
Injection of drug or substance under skin or into muscle
17
$245
$14
Automated urinalysis test
40
$90
$2
Injection, ceftriaxone sodium, per 250 mg
20
$41
—None
2022: 12 services
Original Medicare services billed in 2022
Return visit (30+ min)
159
$20,686
$114
New patient visit (45+ min)
54
$7,692
$142
Long return visit (40+ min)
46
$7,611
$165
Short return visit (20+ min)
58
$5,026
$82
New patient visit (60+ min)
14
$2,846
$203
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
51
$2,588
$51
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or
20
$1,696
$31
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
18
$1,688
$70
New patient visit (30+ min)
13
$1,251
$96
Injection of drug or substance under skin or into muscle
33
$626
$14
Automated urinalysis test
40
$91
$2
Injection, ceftriaxone sodium, per 250 mg
21
$65
—None
2021: 14 services
Original Medicare services billed in 2021
Return visit (30+ min)
168
$22,873
$121
Long return visit (40+ min)
61
$10,743
$173
New patient visit (45+ min)
46
$6,708
$146
Short return visit (20+ min)
42
$3,481
$79
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
42
$2,206
$51
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
19
$1,990
$80
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or
21
$1,496
$31
Injection of drug or substance into vein
19
$1,030
$45
Injection of drug or substance under skin or into muscle
34
$804
$14
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
11
$198
$17
Automated urinalysis test
47
$113
$2
Injection, ceftriaxone sodium, per 250 mg
32
$108
—None
Infusion, normal saline solution , 1000 cc
18
$46
—None
Blood glucose (sugar) test performed by hand-held instrument
13
$46
$3
2020: 7 services
Original Medicare services billed in 2020
Return visit (30+ min)
53
$5,131
$97
Long return visit (40+ min)
28
$3,699
$132
Short return visit (20+ min)
42
$2,566
$60
New patient visit (30+ min)
15
$1,311
$87
New patient visit (15+ min)
14
$627
$45
Automated urinalysis test
29
$65
$2
Injection, ceftriaxone sodium, per 250 mg
11
$30
—None
2019: 11 services
Original Medicare services billed in 2019
Return visit (30+ min)
147
$14,347
$95
Long return visit (40+ min)
61
$8,123
$127
Short return visit (20+ min)
78
$4,818
$61
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
24
$2,203
$76
New patient visit (30+ min)
19
$1,870
$98
Extended office or other outpatient service, first hour
11
$1,325
$120
New patient visit (45+ min)
11
$1,258
$114
Injection of drug or substance under skin or into muscle
20
$359
$16
Automated urinalysis test
41
$102
$2
Injection, ceftriaxone sodium, per 250 mg
38
$98
—None
Infusion, normal saline solution , 1000 cc
13
$29
—None
2018: 12 services
Original Medicare services billed in 2018
Return visit (30+ min)
133
$11,185
$82
Long return visit (40+ min)
77
$10,217
$126
Short return visit (20+ min)
85
$5,192
$60
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
21
$1,977
$76
Extended office or other outpatient service, first hour
13
$1,531
$118
New patient visit (30+ min)
12
$910
$76
Injection of drug or substance under skin or into muscle
16
$371
$21
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
11
$178
$16
Automated urinalysis test
33
$89
$3
Injection, ceftriaxone sodium, per 250 mg
26
$79
—None
Blood glucose (sugar) test performed by hand-held instrument
14
$45
$3
Infusion, normal saline solution , 1000 cc
12
$26
—None
2017: 11 services
Original Medicare services billed in 2017
Return visit (30+ min)
113
$10,439
$91
Long return visit (40+ min)
58
$7,587
$126
Short return visit (20+ min)
102
$5,261
$50
Extended office or other outpatient service, first hour
16
$1,872
$117
New patient visit (30+ min)
14
$1,238
$88
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
16
$1,072
$63
Injection of drug or substance under skin or into muscle
23
$620
$25
Automated urinalysis test
34
$103
$3
Injection, ceftriaxone sodium, per 250 mg
23
$57
—None
Blood glucose (sugar) test performed by hand-held instrument
16
$50
$3
Infusion, normal saline solution , 1000 cc
12
$21
—None
2016: 10 services
Original Medicare services billed in 2016
Return visit (30+ min)
120
$11,665
$94
Long return visit (40+ min)
55
$6,795
$121
Short return visit (20+ min)
74
$4,348
$58
Extended office or other outpatient service, first hour
15
$1,356
$90
New patient visit (30+ min)
13
$1,208
$93
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
13
$996
$71
New patient visit (15+ min)
15
$746
$50
Injection of drug or substance under skin or into muscle
13
$355
$25
Automated urinalysis test
28
$83
$3
Injection, ceftriaxone sodium, per 250 mg
14
$33
—None
2015: 9 services
Original Medicare services billed in 2015
Return visit (30+ min)
76
$6,786
$88
Long return visit (40+ min)
43
$5,569
$130
Short return visit (20+ min)
88
$4,877
$55
Extended office or other outpatient service, first hour
17
$1,609
$95
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
15
$1,127
$75
New patient visit (30+ min)
12
$976
$81
New patient visit (15+ min)
13
$606
$47
Automated urinalysis test
21
$63
$3
Injection, ceftriaxone sodium, per 250 mg
16
$44
—None
2014: 15 services
Original Medicare services billed in 2014
Short return visit (20+ min)
141
$8,465
$58
Return visit (30+ min)
81
$7,278
$89
Long return visit (40+ min)
53
$7,133
$130
Extended office or other outpatient service, first hour
37
$3,403
$90
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
27
$1,963
$70
New patient visit (15+ min)
31
$1,801
$58
New patient visit (30+ min)
22
$1,661
$76
Injection of drug or substance into vein
17
$971
$57
Injection of drug or substance under skin or into muscle
18
$483
$24
Infusion into a vein for hydration, each additional hour
17
$433
$15
Injection of additional new drug or substance into vein
13
$425
$22
Urinalysis, manual test
49
$168
$3
Injection, ceftriaxone sodium, per 250 mg
26
$75
—None
Stool analysis for blood to screen for colon tumors
11
$48
$4
Injection, ondansetron hydrochloride, per 1 mg
17
$7
—None
2013: 14 services
Original Medicare services billed in 2013
Short return visit (20+ min)
149
$10,778
$61
Return visit (30+ min)
73
$6,905
$95
Long return visit (40+ min)
39
$5,016
$125
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less
42
$4,130
$76
New patient visit (15+ min)
62
$3,376
$54
New patient visit (30+ min)
33
$3,277
$99
Injection of drug or substance into vein
25
$1,827
$59
Extended office or other outpatient service, first hour
20
$1,754
$88
Injection of drug or substance under skin or into muscle
28
$907
$24
Injection, ceftriaxone sodium, per 250 mg
60
$335
—None
Inhalation treatment for airway obstruction or sputum production
12
$263
$20
Urinalysis, manual test
51
$184
$3
Stool analysis for blood to screen for colon tumors
11
$49
$4
Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, concentrated form, 1 mg
11
$1
—None
Drugs they prescribed that Part D paid
$8,986
Pharmacies billed $8,986 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 8% of their Part D prescriptions (18 of 224) in 2024. A higher opioid share than 9 in 10 peers; the typical family practice clinician is at 2%.
187 generic and fewer than 11 brand-name prescriptions · $8,986 in drug cost · 104 antibiotic prescriptions to 83 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
Cephalexin
27
$138
$5
Amoxicillin-Clavulanate Potass
19
$104
$5
Azithromycin
13
$51
$4
Sulfamethoxazole-Trimethoprim
12
$32
$3
Tramadol
11
$29
$3
See all 6 drugs
Every Part D drug this clinician prescribed
Cephalexin
27
$138
$5
Amoxicillin-Clavulanate Potass
19
$104
$5
Azithromycin
13
$51
$4
Sulfamethoxazole-Trimethoprim
12
$32
$3
Tramadol
11
$29
$3
Paxlovid
12
$0
$0
Year by year
Part D prescribing by year
2024
224
170
8% (18)
—None
$8,986
2023
182
146
—None
—None
$4,763
2022
144
118
—None
—None
$2,663
2021
137
110
14% (19)
8%
$1,569
2020
60
46
—None
—None
$2,210
2019
107
93
10% (11)
—None
$2,263
2018
124
99
10% (12)
15%
$4,278
2017
114
91
14% (16)
11%
$2,518
2016
113
95
18% (20)
12%
$2,416
2015
102
82
16% (16)
13%
$2,790
2014
142
103
17% (24)
9%
$3,896
2013
146
117
13% (19)
17%
$3,412
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
Part D drugs prescribed in 2023
Paxlovid (Eua)
19
$201
$11
Cephalexin
23
$184
$8
Amoxicillin-Clavulanate Potass
16
$163
$10
2022: 2 drugs
Part D drugs prescribed in 2022
Amoxicillin-Clavulanate Potass
19
$247
$13
Cephalexin
18
$120
$7
2021: 1 drug
Part D drugs prescribed in 2021
Cephalexin
25
$183
$7
2020: 1 drug
Part D drugs prescribed in 2020
Cephalexin
13
$66
$5
2019: 1 drug
Part D drugs prescribed in 2019
Cephalexin
16
$114
$7
2018: 3 drugs
Part D drugs prescribed in 2018
Levofloxacin
11
$201
$18
Amoxicillin-Clavulanate Potass
11
$118
$11
Cephalexin
13
$96
$7
2017: 1 drug
Part D drugs prescribed in 2017
Cephalexin
14
$89
$6
2016: 2 drugs
Part D drugs prescribed in 2016
Cephalexin
13
$133
$10
Hydrocodone-Acetaminophen
11
$92
$8
2015: 1 drug
Part D drugs prescribed in 2015
Hydrocodone-Acetaminophen
12
$66
$6
2014: 4 drugs
Part D drugs prescribed in 2014
Ondansetron Odt
12
$230
$19
Hydrocodone-Acetaminophen
14
$117
$8
Cephalexin
12
$70
$6
Prednisone
11
$52
$5
2013: 3 drugs
Part D drugs prescribed in 2013
Cephalexin
17
$152
$9
Ciprofloxacin
20
$148
$7
Hydrocodone-Acetaminophen
17
$70
$4
Professional record
NPI
1396847273
Licence
CA G69344California G69344: Current · expires 2027-12-31
Trained
University of California, Davis School of Medicine, 1989