Dr. Guilan Chen, MD
- Medicare services, 2022
- 1,847
- Industry payments
- $122
- Affiliated sites
- 1
- Medical group
- 1
- State licenses
- 2
- Practice address
- 1190 Veterans Blvd, Redwood City, CA 94063
- Practice phone
- Call (650) 299-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Redwood City, 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. Guilan Chen is a pathologist in Redwood City, California
Dr. Chen practices at Permanente Medical Group Inc in Redwood City, California.
Dr. Chen's NPI, 1437351798, was assigned on May 31, 2007. Dr. Chen holds California license C192010.
- NPI
- 1437351798NPI Registry (opens in a new tab)
- NPI enumeration date
- May 31, 2007
- NPI status
- Active
- Practice phone
- (650) 299-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Guilan Chen practices at Permanente Medical Group Inc in Redwood City, California
Dr. Chen's primary practice is Permanente Medical Group Inc, at 1190 Veterans Blvd, Redwood City, CA 94063 in San Mateo County. The practice phone is (650) 299-2000.
- Permanente Medical Group Inc1190 Veterans Blvd, Redwood City, CA 94063 · San Mateo CountyPhone(650) 299-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Guilan Chen is affiliated with 2 sites of care and 1 medical group
Dr. Chen's primary practice is Permanente Medical Group Inc in Redwood City, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chen to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Guilan Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen 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
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Dr. Guilan Chen is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dmand AI has Dr. Chen's licenses on file in 2 states: California and Missouri.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
- Student in an organized health care education/training program, Missouri
Pathologists near Dr. Chen
Counts of pathologists 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. Guilan Chen billed Medicare for 1,847 services in 2022
CMS data shows 1,847 Medicare services from Dr. Chen across 11 procedure codes in 2022. Medicare paid $60,611 for them.
Dr. Chen's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Lab and pathology
- 2021: 2,2662022: 1,84718%
Where Dr. Chen's Medicare services took place, 2022
- In an office432%
- In a facility1,80498%
Dr. Chen compared with the California median for pathologists, 2022
- Dr. Chen
- California median
- Medicare services
- 1,847vs 1,15360% above
Medians across 1,094 pathologists in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2022
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 pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Guilan Chen's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 57, with 59% 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 57
Patient panel by sex, all payers
- Women59%
- Men40%
Source: Dmand AI Patient Panel Data
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Dr. Guilan Chen received $122 in industry payments from 2017 to 2023
CMS Open Payments shows 3 general payments to Dr. Chen from 2 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $98.
General payments to Dr. Chen by program year, 2017 to 2023
Companies that paid Dr. Chen the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Guilan 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 | 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 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 Data |
| Industry payments | Open Payments (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. Guilan 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. Guilan Chen's NPI number?
Dr. Guilan Chen's NPI number is 1437351798. It was assigned on May 31, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Guilan Chen?
Dr. Guilan Chen is a pathologist in Redwood City, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Guilan Chen practice?
Dr. Chen practices at 1190 Veterans Blvd, Redwood City, CA 94063. Dr. Chen's primary practice is Permanente Medical Group Inc in Redwood City, California. Dmand AI also links Dr. Chen to 1 group practice or clinic.
What is Dr. Guilan Chen's office phone number?
The practice phone on file for Dr. Chen is (650) 299-2000.
What is Dr. Guilan Chen's medical license number?
Dr. Chen holds California license C192010, one of the licenses on file in 2 states.
Which states has Dr. Guilan Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California and Missouri.
What medical group is Dr. Guilan Chen part of?
Dr. Chen is linked to The Permanente Medical Group, Inc.
Does Dr. Guilan Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 1,847 services in 2022.
What services does Dr. Guilan Chen bill to Medicare?
In 2022, Dr. Chen's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88342).
Has Dr. Guilan Chen received payments from drug or device companies?
CMS Open Payments shows $122 in general payments to Dr. Chen from 2 companies from 2017 to 2023. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Guilan Chen been practicing?
Dr. Chen graduated from medical school in 1990, 36 years ago.
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