Dr. Zachary H. Chen, MD
- Medicare services, 2021
- 692
- Part D claims, 2021
- 1,358
- Industry payments
- $45
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 3624 Ensign Rd Ne, Olympia, WA 98506-5074
- Practice phone
- Call (360) 413-8199
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Zachary H Chen MD PLLC
Physician office · Olympia, Washington
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. Zachary H. Chen is an internist in Olympia, Washington
Dr. Chen practices at Zachary H Chen MD PLLC in Olympia, Washington.
Dr. Chen's NPI, 1679689780, was assigned on August 22, 2006. Dr. Chen holds Washington license MD00023128.
- NPI
- 1679689780NPI Registry (opens in a new tab)
- NPI enumeration date
- August 22, 2006
- NPI status
- Active
- Practice phone
- (360) 413-8199
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Zachary H. Chen practices at Zachary H Chen MD PLLC in Olympia, Washington
Dr. Chen's primary practice is Zachary H Chen MD PLLC, at 3624 Ensign Rd Ne, Olympia, WA 98506-5074. The practice phone is (360) 413-8199.
- Zachary H Chen MD PLLC3624 Ensign Rd Ne, Olympia, WA 98506-5074Phone(360) 413-8199
Source: Dmand AI Affiliation Data
Dr. Zachary H. Chen is affiliated with 1 site of care
Dr. Chen's primary practice is Zachary H Chen MD PLLC in Olympia, Washington.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Zachary H. 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 |
|---|---|
| Zachary H Chen MD PLLC | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zachary H. Chen is one of 2,689 internists in Washington
Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chen is licensed in Washington.
Specialties and state licenses
- Internal medicine, WashingtonPrimary
Internists near Dr. Chen
Counts of internists 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. Zachary H. Chen billed Medicare for 692 services in 2021
CMS data shows 692 Medicare services from Dr. Chen across 6 procedure codes in 2021. Medicare paid $71,022 for them. Every service was in an office.
Dr. Chen's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 8822021: 60931%
- Other services
- 2020: 952021: 8313%
- Tests and treatments
- 2020: 202021: 0100%
Dr. Chen compared with the Washington median for internists, 2021
- Dr. Chen
- Washington median
- Medicare services
- 692vs 36490% above
- Part D claims
- 1,358vs 1827.5 times
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other internists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Zachary H. Chen's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 75, with 38% 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 75
Patient panel by sex, all payers
- Women38%
- Men62%
Source: Dmand AI Patient Panel Data
Dr. Zachary H. Chen wrote 1,358 Medicare Part D claims in 2021
In 2021, Dr. Chen wrote 1,358 Medicare Part D claims. They cover 43 drugs, with $45,188 in total drug cost. In 2020, CMS named 1,778 claims across 50 drugs.
Dr. Chen's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1,7782021: 1,35824%
Drugs named by CMS: 43 in 2021, 50 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Zachary H. Chen received $45 in industry payments from 2016 to 2018
CMS Open Payments shows 2 general payments to Dr. Chen from 2 drug and device companies from 2016 to 2018. Education make up the largest share, 72% of the total. Novo Nordisk Inc paid the most, $32.
General payments to Dr. Chen by program year, 2016 to 2018
General payments to Dr. Chen by kind, 2016 to 2018
- Education$3272%
- Food and beverage$1228%
Companies that paid Dr. Chen the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Zachary H. 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 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| 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. Zachary H. 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. Zachary H. Chen's NPI number?
Dr. Zachary H. Chen's NPI number is 1679689780. It was assigned on August 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachary H. Chen?
Dr. Zachary H. Chen is an internist in Olympia, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Zachary H. Chen practice?
Dr. Chen practices at 3624 Ensign Rd Ne, Olympia, WA 98506-5074. Dr. Chen's primary practice is Zachary H Chen MD PLLC in Olympia, Washington.
What is Dr. Zachary H. Chen's office phone number?
The practice phone on file for Dr. Chen is (360) 413-8199.
What is Dr. Zachary H. Chen's medical license number?
Dr. Chen holds Washington license MD00023128.
Does Dr. Zachary H. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 692 services in 2021.
What services does Dr. Zachary H. Chen bill to Medicare?
In 2021, Dr. Chen's most billed Medicare services were office visit, established patient (99215), medicare service (G0439) and office visit, established patient (99214).
What drugs does Dr. Zachary H. Chen prescribe most?
In 2021 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Levothyroxine Sodium, Lisinopril and Atorvastatin Calcium.
Has Dr. Zachary H. Chen received payments from drug or device companies?
CMS Open Payments shows $45 in general payments to Dr. Chen from 2 companies from 2016 to 2018. The largest total came from Novo Nordisk Inc.
How long has Dr. Zachary H. Chen been practicing?
Dr. Chen graduated from medical school in 1980, 46 years ago.
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