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Irene A Mason, MD

Obstetrics/Gynecology · Richmond

NPI 1659509768

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1

Offices

1 location · Permanente Medical Group Inc · 10,928 clinicians in this group

Looking this up.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Mason’s office at (510) 307-1500 to ask if they take your plan before you enroll.

California Medical Board record

Licence A107862 · Current

Licensed to practise in California · since 2009 · expires 2027-01-31 · Drexel University College of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Medicaid work

$6,730 in 2024

Medicaid paid $6,730 for 408 billed services this clinician did in 2024, up to 29 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
Short return visit (20+ min)217$6,730
TOBACCO NON-USER191$0
Medicaid work by year
2024408229$6,730
2023187224$109
2022124121$19
2021146119$316
202080123$90
201974119$90
201877120$87
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Short return visit (20+ min)160$109
TOBACCO NON-USER27$0

2022

Largest Medicaid services in 2022
Short return visit (20+ min)124$19

2021

Largest Medicaid services in 2021
Short return visit (20+ min)146$316

2020

Largest Medicaid services in 2020
Short return visit (20+ min)80$90

2019

Largest Medicaid services in 2019
Short return visit (20+ min)74$90

2018

Largest Medicaid services in 2018
Short return visit77$87

Drugs they prescribed that Part D paid

$9,200

Pharmacies billed $9,200 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 174) in 2024. At or below the middle of the specialty; the typical obstetrics & gynecology clinician is at 0%.

155 generic and 19 brand-name prescriptions · $9,200 in drug cost · 13 antibiotic prescriptions to 12 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
Climara15$2,090$139
Estradiol38$1,343$35
Yuvafem12$1,316$110
Trospium Chloride21$1,133$54
Acyclovir23$378$16

Year by year

Part D prescribing by year
2024174790% (0)11%$9,200
2023171810% (0)12%$10,250
202218286None9%$10,241
2021169740% (0)8%$10,897
202016480None12%$9,351
201916280None17%$14,332
2018153730% (0)19%$12,297
201713664None15%$13,015
2016113490% (0)36%$12,139
201512553None22%$11,548
201411267None27%$9,503
20138142None23%$4,810

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 6 drugs

Part D drugs prescribed in 2023
Yuvafem16$2,109$132
Climara11$1,945$177
Estradiol35$1,269$36
Trospium Chloride13$538$41
Acyclovir14$311$22
Triamcinolone Acetonide11$90$8

2022: 6 drugs

Part D drugs prescribed in 2022
Yuvafem21$3,242$154
Estradiol33$1,018$31
Trospium Chloride15$821$55
Acyclovir19$603$32
Triamcinolone Acetonide15$118$8
Fluconazole11$71$6

2021: 4 drugs

Part D drugs prescribed in 2021
Estradiol48$2,661$55
Yuvafem12$1,784$149
Trospium Chloride18$960$53
Acyclovir18$474$26

2020: 4 drugs

Part D drugs prescribed in 2020
Estradiol52$3,395$65
Climara11$1,709$155
Trospium Chloride18$1,041$58
Acyclovir15$349$23

2019: 4 drugs

Part D drugs prescribed in 2019
Yuvafem11$3,093$281
Estradiol23$1,542$67
Trospium Chloride17$950$56
Nystop15$604$40

2018: 4 drugs

Part D drugs prescribed in 2018
Estrace23$2,960$129
Trospium Chloride14$1,368$98
Oxybutynin Chloride Er15$832$55
Estradiol13$292$22

2017: 3 drugs

Part D drugs prescribed in 2017
Estradiol19$471$25
Acyclovir12$244$20
Fluconazole21$161$8

2016: 3 drugs

Part D drugs prescribed in 2016
Premarin12$3,183$265
Estradiol13$393$30
Fluconazole11$96$9

2015: 4 drugs

Part D drugs prescribed in 2015
Premarin11$2,652$241
Oxybutynin Chloride Er12$1,659$138
Estradiol14$349$25
Fluconazole12$177$15

2014: 3 drugs

Part D drugs prescribed in 2014
Estrace11$2,281$207
Oxybutynin Chloride Er15$1,754$117
Estradiol13$240$18

2013: 1 drug

Part D drugs prescribed in 2013
Metronidazole11$204$19

Professional record

NPI
1659509768
Licence
CA A107862California A107862: Current · expires 2027-01-31
Gender
Female
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207V00000X (207V00000X)
Mailing address
2400 W El Camino Real, Apt 110, Mountain View, CA, 94040
NPI first listed
2009-06-26
NPI last updated
2022-01-10
NPI record certified
2022-01-10

This is when the NPI record was last certified, not a medical board exam.

This office lists an electronic records connection.