Nathaniel Li Yen Chang, PA-C

  • Seattle, WA
  • Physician assistant
NPI1538539135PAC ID5496034944
Medicare patients, 2024
225
Part D claims, 2024
355
Hospital affiliations
2
Medical groups
2
State license
1
Practice address
1959 NE Pacific St Box 356151, Seattle, WA 98195
Practice phone
Call (206) 598-3300
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UW Medical Center - Montlake

Hospital · Seattle, Washington

See all 5 affiliations

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Nathaniel Li Yen Chang is a physician assistant in Seattle, Washington

Nathaniel Chang practices at UW Medical Center - Montlake in Seattle, Washington, part of University of Washington.

Nathaniel Chang's NPI, 1538539135, was assigned on September 25, 2015. Nathaniel Chang holds Washington license PA60664724.

NPI and contact details
Medicare PAC ID
5496034944
NPI enumeration date
September 25, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(206) 598-3300
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
36
Medical school graduation
2016

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Nathaniel Li Yen Chang practices at UW Medical Center - Montlake in Seattle, Washington

Nathaniel Chang's primary practice is UW Medical Center - Montlake, at 1959 NE Pacific St Box 356151, Seattle, WA 98195 in King County. The practice phone is (206) 598-3300.

Source: Dmand AI Affiliation Data

Nathaniel Li Yen Chang is affiliated with 3 sites of care and 2 medical groups

Nathaniel Chang's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. The medical group on file is UW Physicians. Dmand AI also links Nathaniel Chang to 1 more hospital, 1 hospital outpatient department and 1 medical group, each named with a free account.

See all 5 affiliations for Nathaniel Chang

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Nathaniel Li Yen Chang's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Nathaniel Chang practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UW Medical Center - MontlakeAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Nathaniel Li Yen Chang is one of 3,005 physician assistants in Washington

Physician assistant is Nathaniel Chang's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Nathaniel Chang is licensed in Washington.

Specialties and state licenses

  • Physician assistant, WashingtonPrimaryLicense PA60664724 · taxonomy 363A00000X

Physician assistants near Nathaniel Chang

Counts of physician assistants 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

Nathaniel Li Yen Chang treated 225 Medicare patients in 2024, average age 73

CMS counts 225 Medicare patients who saw Nathaniel Chang in 2024. The largest group is 65 to 74, with 113 patients. 66% of them have high cholesterol, and 65% have high blood pressure. 11% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Nathaniel Chang's median patient age at 56, with 47% women.

Medicare patients, 2024225
Average age73
Average risk score1.16
Also on Medicaid11%

Nathaniel Chang's Medicare patients by age, 2024

Nathaniel Chang's Medicare patients by sex, 2024

  • Women12053%
  • Men10547%

Chronic conditions among Nathaniel Chang's Medicare patients, 2024

  1. High cholesterol66%
  2. High blood pressure65%
  3. Arthritis34%
  4. Anxiety21%
  5. Diabetes21%
  6. Ischemic heart disease21%
  7. Cancer20%
  8. Chronic kidney disease20%

Share of Medicare patients with each condition. A patient can have several.

Nathaniel Chang's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 56

Patient panel by sex, all payers

  • Women47%
  • Men53%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Nathaniel Li Yen Chang wrote 355 Medicare Part D claims in 2024

In 2024, Nathaniel Chang wrote 355 Medicare Part D claims for 101 patients. 90% of them were for generic drugs.

Part D claims, 2024355
Part D patients101

Nathaniel Chang's Part D claims by kind of drug, 2024

  • Generic321 claims90%
  • Brand-name and other34 claims10%

Drug classes CMS tracks in Nathaniel Chang's Part D claims, 2024

  • Opioids4%13 of 355 claims
  • Antibiotics7%26 of 355 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

Nathaniel Li Yen Chang offers telehealth to Medicare patients

Nathaniel Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nathaniel Chang as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Sources for Nathaniel Li Yen Chang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Nathaniel Li Yen Chang

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Nathaniel Li Yen Chang's NPI number?

Nathaniel Li Yen Chang's NPI number is 1538539135. It was assigned on September 25, 2015, and it is active in the NPI Registry.

What does Nathaniel Li Yen Chang specialize in?

Nathaniel Li Yen Chang is a physician assistant in Seattle, Washington. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Nathaniel Li Yen Chang practice?

Nathaniel Chang practices at 1959 NE Pacific St Box 356151, Seattle, WA 98195. Nathaniel Chang's primary practice is UW Medical Center - Montlake in Seattle, Washington, part of University of Washington. Dmand AI also links Nathaniel Chang to 1 hospital, 1 hospital outpatient department and 1 medical group.

What is Nathaniel Li Yen Chang's office phone number?

The practice phone on file for Nathaniel Chang is (206) 598-3300.

What is Nathaniel Li Yen Chang's medical license number?

Nathaniel Chang holds Washington license PA60664724.

Which hospitals is Nathaniel Li Yen Chang affiliated with?

Nathaniel Chang practices at UW Medical Center - Montlake in Seattle, Washington. Dmand AI links Nathaniel Chang to 1 more hospital.

What medical group is Nathaniel Li Yen Chang part of?

Nathaniel Chang is linked to UW Physicians. Dmand AI links Nathaniel Chang to 1 more medical group.

Does Nathaniel Li Yen Chang accept Medicare?

Yes. CMS lists Nathaniel Chang as accepting Medicare assignment.

Does Nathaniel Li Yen Chang offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Nathaniel Chang as offering telehealth services.

How many Medicare patients does Nathaniel Li Yen Chang see?

CMS counts 225 Medicare patients who saw Nathaniel Chang in 2024, with an average age of 73.

How long has Nathaniel Li Yen Chang been practicing?

Nathaniel Chang graduated from medical school in 2016, 10 years ago.

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