Dr. Karen Chen, MD
- Medicare services, 2024
- 25
- Medicare patients, 2024
- 15
- Part D claims, 2024
- 1,773
- Industry payments
- $3,455
- Affiliated sites
- 3
- Practice address
- 2238 Geary Blvd, San Francisco, CA 94115
- Practice phone
- Call (415) 833-3700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
San Francisco Medical Center - Mammography
Mammography / Breast Imaging Center · San Francisco, California
Find Dr. Chen'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. Karen Chen is an ophthalmologist in San Francisco, California
Dr. Chen practices at San Francisco Medical Center - Mammography in San Francisco, California.
Dr. Chen's NPI, 1376076018, was assigned on April 10, 2017. Dr. Chen graduated from Stanford University School of Medicine in 2017. Dr. Chen holds Massachusetts license 287665.
- NPI
- 1376076018NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8729480769
- NPI enumeration date
- April 10, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 833-3700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen Chen practices at San Francisco Medical Center - Mammography in San Francisco, California
Dr. Chen's primary practice is San Francisco Medical Center - Mammography, at 2238 Geary Blvd, San Francisco, CA 94115. The practice phone is (415) 833-3700.
- San Francisco Medical Center - Mammography2238 Geary Blvd, San Francisco, CA 94115Phone(415) 833-3700
Source: Dmand AI Affiliation Data
Dr. Karen Chen is affiliated with 3 sites of care and 2 medical groups
Dr. Chen's primary practice is San Francisco Medical Center - Mammography in San Francisco, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chen to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Chen's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Karen 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 |
|---|---|
| San Francisco Medical Center - Mammography | Available with a free account |
| +2 more sites and 1 medical group | 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. Karen Chen is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chen is licensed in Massachusetts.
Specialties and state licenses
- Ophthalmology, MassachusettsPrimary
Ophthalmologists near Dr. Chen
Counts of ophthalmologists 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. Karen Chen billed Medicare for 25 services in 2024
CMS data shows 25 Medicare services from Dr. Chen across 1 procedure code in 2024, for 15 Medicare patients. Medicare paid $1,217 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 522024: 2552%
Dr. Chen compared with the California median for ophthalmologists, 2024
- Dr. Chen
- California median
- Medicare services
- 25vs 1,07998% below
- Medicare patients
- 15vs 42196% below
- Part D claims
- 1,695vs 6182.7 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Chen treated 15 Medicare patients in 2024, average age 74
CMS counts 15 Medicare patients who saw Dr. Chen in 2024. Their average risk score is 0.67, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 73, with 49% 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 73
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen Chen wrote 1,773 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 1,773 Medicare Part D claims for 496 patients. 79% of them were for generic drugs. CMS names the drug for 1,695 of them, across 14 drugs with 11 or more claims each, at $107,032 in total drug cost. In 2023, CMS named 2,007 claims across 13 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic1,397 claims79%
- Brand-name376 claims21%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,0072024: 1,69516%
Drugs named by CMS: 14 in 2024, 13 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. Karen 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)
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. Karen Chen received $3,455 in industry payments from 2018 to 2025
CMS Open Payments shows 46 general payments to Dr. Chen from 8 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 97% of the total. Abbvie Inc. paid the most, $1,488.
General payments to Dr. Chen by program year, 2018 to 2025
General payments to Dr. Chen by kind, 2018 to 2025
- Food and beverage$3,35597%
- Education$1003%
Companies that paid Dr. Chen the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen Chen graduated from Stanford University School of Medicine
Dr. Chen graduated from Stanford University School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen 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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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 |
| 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. Karen 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. Karen Chen's NPI number?
Dr. Karen Chen's NPI number is 1376076018. It was assigned on April 10, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Chen?
Dr. Karen Chen is an ophthalmologist in San Francisco, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Karen Chen practice?
Dr. Chen practices at 2238 Geary Blvd, San Francisco, CA 94115. Dr. Chen's primary practice is San Francisco Medical Center - Mammography in San Francisco, California. Dmand AI also links Dr. Chen to 2 group practices and clinics and 1 medical group.
What is Dr. Karen Chen's office phone number?
The practice phone on file for Dr. Chen is (415) 833-3700.
What is Dr. Karen Chen's medical license number?
Dr. Chen holds Massachusetts license 287665.
What medical group is Dr. Karen Chen part of?
Dr. Chen is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Chen to 1 more medical group.
Does Dr. Karen Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 25 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. Karen Chen see?
CMS counts 15 Medicare patients who saw Dr. Chen in 2024, with an average age of 74.
What services does Dr. Karen Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were eye exam or test (92012).
Where did Dr. Karen Chen go to medical school?
Dr. Chen graduated from Stanford University School of Medicine in 2017.
Show 3 more questionsShow fewer questions
What drugs does Dr. Karen Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Prednisolone Acetate.
Has Dr. Karen Chen received payments from drug or device companies?
CMS Open Payments shows $3,455 in general payments to Dr. Chen from 8 companies from 2018 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Karen Chen been practicing?
Dr. Chen graduated from medical school in 2017, 9 years ago.
Selling to ophthalmology practices?
See ophthalmologists 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