Dr. Rachel Freiermiller Sivek, MD
- Part D claims, 2024
- 17
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2016
- Practice address
- 33608 Ortega Highway, San Juan Capistrano, CA 92675
- Practice phone
- Call (949) 728-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Quest Diagnostics Nichols Institute
Clinical Lab - Full Service · San Juan Capistrano, California
Find Dr. Sivek'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. Rachel Freiermiller Sivek is a psychiatrist in San Juan Capistrano, California
Dr. Sivek practices at Quest Diagnostics Nichols Institute in San Juan Capistrano, California.
Dr. Sivek's NPI, 1730533944, was assigned on April 14, 2016. Dr. Sivek holds New York license 295932-1.
- NPI
- 1730533944NPI Registry (opens in a new tab)
- NPI enumeration date
- April 14, 2016
- NPI status
- Active
- Practice phone
- (949) 728-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Rachel Freiermiller Sivek practices at Quest Diagnostics Nichols Institute in San Juan Capistrano, California
Dr. Sivek's primary practice is Quest Diagnostics Nichols Institute, at 33608 Ortega Highway, San Juan Capistrano, CA 92675. The practice phone is (949) 728-4000.
- Quest Diagnostics Nichols Institute33608 Ortega Highway, San Juan Capistrano, CA 92675Phone(949) 728-4000
Source: Dmand AI Affiliation Data
Dr. Rachel Freiermiller Sivek is affiliated with 1 site of care
Dr. Sivek's primary practice is Quest Diagnostics Nichols Institute in San Juan Capistrano, California.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Rachel Freiermiller Sivek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sivek practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Quest Diagnostics Nichols Institute | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Rachel Freiermiller Sivek is one of 6,803 psychiatrists in California
Psychiatry is Dr. Sivek's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Sivek is licensed in New York.
Specialties and state licenses
- Psychiatry, New YorkPrimary
Psychiatrists near Dr. Sivek
Counts of psychiatrists 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. Rachel Freiermiller Sivek's patients have a median age of 21
Across all payers, Dmand AI patient panel data puts Dr. Sivek's median patient age at 21, with 100% women.
Dr. Sivek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 21
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Rachel Freiermiller Sivek wrote 17 Medicare Part D claims in 2024
In 2024, Dr. Sivek wrote 17 Medicare Part D claims. 100% of them were for generic drugs. They cover 3 drugs, with $11,891 in total drug cost. In 2019, CMS named 13 claims across 1 drug.
Dr. Sivek's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 132020: 61369%
Drugs named by CMS: 3 in 2020, 1 in 2019.
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
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Sources for Dr. Rachel Freiermiller Sivek'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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. Rachel Freiermiller Sivek
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What is Dr. Rachel Freiermiller Sivek's NPI number?
Dr. Rachel Freiermiller Sivek's NPI number is 1730533944. It was assigned on April 14, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Rachel Freiermiller Sivek?
Dr. Rachel Freiermiller Sivek is a psychiatrist in San Juan Capistrano, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Rachel Freiermiller Sivek practice?
Dr. Sivek practices at 33608 Ortega Highway, San Juan Capistrano, CA 92675. Dr. Sivek's primary practice is Quest Diagnostics Nichols Institute in San Juan Capistrano, California.
What is Dr. Rachel Freiermiller Sivek's office phone number?
The practice phone on file for Dr. Sivek is (949) 728-4000.
What is Dr. Rachel Freiermiller Sivek's medical license number?
Dr. Sivek holds New York license 295932-1.
What drugs does Dr. Rachel Freiermiller Sivek prescribe most?
In 2020 Medicare Part D data, Dr. Sivek's most prescribed drugs by claims were Lamotrigine, Latuda and Hydroxyzine HCl.
How long has Dr. Rachel Freiermiller Sivek been practicing?
Dr. Sivek's NPI was assigned in 2016.
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