Dr. Sophia S. Chen, DO
- Part D claims, 2024
- 2,726
- Hospital affiliations
- 1
- Industry payments
- $380
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 380 West MacArthur Boulevard, Oakland, CA 94609
- Practice phone
- Call (510) 251-0121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Addiction Medicine & Recovery Services at Oakland Medical Center
Outpatient Addiction Treatment · Oakland, California
Find Dr. Chen's professional email, personal email and mobile number
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Dr. Sophia S. Chen is a geriatric medicine (internal medicine) physician in Oakland, California
Dr. Chen practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
Dr. Chen's NPI, 1225371016, was assigned on April 1, 2013. Dr. Chen graduated from Touro University California - Vallejo in 2013. Dr. Chen holds California license 20A13633.
- NPI
- 1225371016NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224336342
- NPI enumeration date
- April 1, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 251-0121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sophia S. Chen practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California
Dr. Chen's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.
- Addiction Medicine & Recovery Services at Oakland Medical Center380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121
Source: Dmand AI Affiliation Data
Dr. Sophia S. Chen is affiliated with 3 sites of care and 1 medical group
Dr. Chen's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dr. Chen is also affiliated with Contra Costa Regional Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chen to 1 more skilled nursing facility, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sophia S. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Addiction Medicine & Recovery Services at Oakland Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sophia S. Chen is one of 497 geriatric medicine (internal medicine) physicians in California
Geriatric medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RG0300X. Dr. Chen is board certified in geriatric medicine by the American Board of Internal Medicine. Dr. Chen is licensed in California.
Specialties and state licenses
- Geriatric medicine (internal medicine), CaliforniaPrimary
Clinical focus
Dmand AI lists non-alzheimer's dementia (chronic) among the conditions Dr. Chen treats.
Geriatric medicine (internal medicine) physicians near Dr. Chen
Counts of geriatric medicine (internal medicine) physicians 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. Sophia S. Chen's patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 79, with 57% women.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 79
Patient panel by sex, all payers
- Women57%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Sophia S. Chen wrote 2,726 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 2,726 Medicare Part D claims for 308 patients. 86% of them were for generic drugs. CMS names the drug for 2,281 of them, across 59 drugs with 11 or more claims each, at $117,908 in total drug cost. In 2023, CMS named 1,598 claims across 52 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic2,343 claims86%
- Brand-name and other383 claims14%
Dr. Chen'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.
Drug classes CMS tracks in Dr. Chen's Part D claims, 2024
- Opioids2%46 of 2,726 claims
- Antibiotics1%26 of 2,726 claims
- Antipsychotics, patients 65 and over5%128 of 2,726 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,5982024: 2,28143%
Drugs named by CMS: 59 in 2024, 52 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. Sophia S. Chen takes part in Medicare
Dr. Chen 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)
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Dr. Sophia S. Chen received $380 in industry payments from 2019 to 2025
CMS Open Payments shows 5 general payments to Dr. Chen from 4 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Ironshore Pharmaceuticals Inc. paid the most, $125.
General payments to Dr. Chen by program year, 2019 to 2025
Companies that paid Dr. Chen the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sophia S. Chen graduated from Touro University California - Vallejo
Dr. Chen graduated from Touro University California - Vallejo in 2013.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Sophia S. Chen accepts plans from 2 insurance carriers
Dr. Chen 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. Chen accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sophia S. Chen'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Sophia S. Chen
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. Sophia S. Chen's NPI number?
Dr. Sophia S. Chen's NPI number is 1225371016. It was assigned on April 1, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Sophia S. Chen?
Dr. Sophia S. Chen is a geriatric medicine (internal medicine) physician in Oakland, California. The primary specialty in the NPI Registry is Geriatric Medicine (Internal Medicine) Physician (taxonomy code 207RG0300X).
Where does Dr. Sophia S. Chen practice?
Dr. Chen practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Chen's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dmand AI also links Dr. Chen to 1 skilled nursing facility.
What is Dr. Sophia S. Chen's office phone number?
The practice phone on file for Dr. Chen is (510) 251-0121.
What is Dr. Sophia S. Chen's medical license number?
Dr. Chen holds California license 20A13633.
Which hospitals is Dr. Sophia S. Chen affiliated with?
Dr. Chen is affiliated with Contra Costa Regional Medical Center.
What medical group is Dr. Sophia S. Chen part of?
Dr. Chen is linked to The Permanente Medical Group, Inc.
Does Dr. Sophia S. Chen accept Medicare?
Yes. CMS lists Dr. Chen as accepting Medicare assignment.
Is Dr. Sophia S. Chen board certified?
Yes. Dr. Chen is board certified in geriatric medicine by the American Board of Internal Medicine.
Where did Dr. Sophia S. Chen go to medical school?
Dr. Chen graduated from Touro University California - Vallejo in 2013.
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What drugs does Dr. Sophia S. Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Donepezil HCl, Atorvastatin Calcium and Warfarin Sodium.
Has Dr. Sophia S. Chen received payments from drug or device companies?
CMS Open Payments shows $380 in general payments to Dr. Chen from 4 companies from 2019 to 2025. The largest total came from Ironshore Pharmaceuticals Inc.
How long has Dr. Sophia S. Chen been practicing?
Dr. Chen graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Sophia S. Chen accept?
Dr. Chen 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.
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