Dr. Irene S. O'Farrell, MD
- Part D claims, 2024
- 303
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State license
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. O'Farrell's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Irene S. O'Farrell is an OB-GYN in Stockton, California
Dr. O'Farrell practices at Permanente Medical Group Inc in Stockton, California.
Dr. O'Farrell's NPI, 1730267238, was assigned on November 1, 2006. Dr. O'Farrell graduated from Medical College Of Wisconsin in 2002. Dr. O'Farrell holds California license A96313.
- NPI
- 1730267238NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365546207
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Irene S. O'Farrell practices at Permanente Medical Group Inc in Stockton, California
Dr. O'Farrell's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Irene S. O'Farrell is affiliated with 2 sites of care and 1 medical group
Dr. O'Farrell's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. O'Farrell is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Irene S. O'Farrell's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Farrell practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Irene S. O'Farrell is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. O'Farrell's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. O'Farrell is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. O'Farrell is licensed in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. O'Farrell
Counts of OB-GYNs with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Irene S. O'Farrell's patients have a median age of 36
Across all payers, Dmand AI patient panel data puts Dr. O'Farrell's median patient age at 36, with 100% women.
Dr. O'Farrell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Irene S. O'Farrell wrote 303 Medicare Part D claims in 2024
In 2024, Dr. O'Farrell wrote 303 Medicare Part D claims for 141 patients. 82% of them were for generic drugs. CMS names the drug for 195 of them, across 6 drugs with 11 or more claims each, at $33,359 in total drug cost. In 2023, CMS named 160 claims across 4 drugs.
Dr. O'Farrell's Part D claims by kind of drug, 2024
- Generic247 claims82%
- Brand-name56 claims18%
Dr. O'Farrell's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1602024: 19522%
Drugs named by CMS: 6 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Irene S. O'Farrell takes part in Medicare
Dr. O'Farrell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Irene S. O'Farrell graduated from Medical College Of Wisconsin
Dr. O'Farrell graduated from Medical College Of Wisconsin in 2002.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Irene S. O'Farrell accepts plans from 2 insurance carriers
Dr. O'Farrell is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. O'Farrell accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Irene S. O'Farrell's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Irene S. O'Farrell
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Irene S. O'Farrell's NPI number?
Dr. Irene S. O'Farrell's NPI number is 1730267238. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Irene S. O'Farrell?
Dr. Irene S. O'Farrell is an OB-GYN in Stockton, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Irene S. O'Farrell practice?
Dr. O'Farrell practices at 7373 West Ln, Stockton, CA 95210. Dr. O'Farrell's primary practice is Permanente Medical Group Inc in Stockton, California.
What is Dr. Irene S. O'Farrell's office phone number?
The practice phone on file for Dr. O'Farrell is (209) 476-2000.
What is Dr. Irene S. O'Farrell's medical license number?
Dr. O'Farrell holds California license A96313.
Which hospitals is Dr. Irene S. O'Farrell affiliated with?
Dr. O'Farrell is affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Irene S. O'Farrell part of?
Dr. O'Farrell is linked to The Permanente Medical Group, Inc.
Does Dr. Irene S. O'Farrell accept Medicare?
Yes. CMS lists Dr. O'Farrell as accepting Medicare assignment.
Is Dr. Irene S. O'Farrell board certified?
Yes. Dr. O'Farrell is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Irene S. O'Farrell go to medical school?
Dr. O'Farrell graduated from Medical College Of Wisconsin in 2002.
Show 3 more questionsShow fewer questions
What drugs does Dr. Irene S. O'Farrell prescribe most?
In 2024 Medicare Part D data, Dr. O'Farrell's most prescribed drugs by claims were Estradiol, Estring and Yuvafem.
How long has Dr. Irene S. O'Farrell been practicing?
Dr. O'Farrell graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Irene S. O'Farrell accept?
Dr. O'Farrell is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to obstetrics and gynecology practices?
See OB-GYNs in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card