Dr. Alexander King Chen, MD

  • Woodland, CA
  • Internist
NPI1164537858PAC ID7517030919
Medicare services, 2024
3,594
Medicare patients, 2024
676
Part D claims, 2024
22,296
MIPS score, 2024
100
Hospital affiliations
1
Practice address
632 W. Gibson Rd, Woodland, CA 95695
Practice phone
Call (530) 668-2632
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Primary & Specialty Care - Dignity Health Woodland Clinic

Mammography / Breast Imaging Center · Woodland, California

See all 11 affiliations

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Dr. Alexander King Chen is an internist in Woodland, California

Dr. Chen practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California.

Dr. Chen's NPI, 1164537858, was assigned on August 20, 2006. Dr. Chen graduated from John A. Burns School of Medicine in 1990. Dr. Chen holds California license G85900.

NPI and contact details
Medicare PAC ID
7517030919
NPI enumeration date
August 20, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(530) 668-2632
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
62
Medical school graduation
1990

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

Dr. Alexander King Chen practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California

Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic, at 632 W. Gibson Rd, Woodland, CA 95695. The practice phone is (530) 668-2632.

  • Primary & Specialty Care - Dignity Health Woodland Clinic
    632 W. Gibson Rd, Woodland, CA 95695Phone(530) 668-2632

Source: Dmand AI Affiliation Data

Dr. Alexander King Chen is affiliated with 10 sites of care and 1 medical group

Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dr. Chen is also affiliated with Dignity Health - Woodland Memorial Hospital. The medical group on file is Mercy Medical Group. Dmand AI also links Dr. Chen to 5 more home health agencies, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility, each named with a free account. Dr. Chen's employer is on file too: a breast imaging center.

See all 11 affiliations for Dr. Chen

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

Dmand AI tracks the EHR system at Dr. Alexander King Chen's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 10 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Primary & Specialty Care - Dignity Health Woodland ClinicAvailable with a free account
+9 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Alexander King Chen is one of 16,751 internists in California

Internal medicine is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Chen's licenses on file in 3 states: California, New York and Connecticut.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense G85900 · 2000 to 2026 · taxonomy 207R00000X
  • New York license1996 to 2001
  • Connecticut license2000

Clinical focus

Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, acute skin infection, adjustment disease, alcohol use disorders, alzheimer's disease and aneurysm among the conditions Dr. Chen treats.

Internists near Dr. Chen

Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.

16,751internists in California
9internists in Woodland

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Alexander King Chen billed Medicare for 3,594 services in 2024

CMS data shows 3,594 Medicare services from Dr. Chen across 25 procedure codes in 2024, for 676 Medicare patients. Medicare paid $211,957 for them.

Medicare services, 20243,594
Medicare patients676
Paid by Medicare$211,957
Procedure codes25

Dr. Chen's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 02024: 1,320
Office and hospital visits
2023: 1,2472024: 1,2621%
Other services
2023: 4332024: 4719%
Tests and treatments
2023: 3302024: 39921%
Lab and pathology
2023: 1212024: 1164%
Surgery
2023: 292024: 2610%

Where Dr. Chen's Medicare services took place, 2024

  • In an office3,55799%
  • In a facility371%

Dr. Chen compared with the California median for internists, 2024

  • Dr. Chen
  • California median
Medicare services
3,594vs 36110.0 times
Medicare patients
676vs 1514.5 times
Part D claims
21,439vs 42150.9 times

Medians across 15,815 internists 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.

See all procedures by Dr. Chen

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Alexander King Chen treated 676 Medicare patients in 2024, average age 77

CMS counts 676 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 252 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.26, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 70, with 55% women.

Medicare patients, 2024676
Average age77
Average risk score1.26
Also on Medicaid29%

Dr. Chen's Medicare patients by age, 2024

Dr. Chen's Medicare patients by sex, 2024

  • Women39859%
  • Men27841%

Chronic conditions among Dr. Chen's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol66%
  3. Arthritis46%
  4. Diabetes34%
  5. Chronic kidney disease31%
  6. Mood disorders27%
  7. Depression22%
  8. Anxiety20%

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

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 70

Patient panel by sex, all payers

  • Women55%
  • Men45%

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

Dr. Alexander King Chen wrote 22,296 Medicare Part D claims in 2024

In 2024, Dr. Chen wrote 22,296 Medicare Part D claims for 1,143 patients. 89% of them were for generic drugs. CMS names the drug for 21,439 of them, across 237 drugs with 11 or more claims each, at $1,507,788 in total drug cost. In 2023, CMS named 20,290 claims across 231 drugs.

Part D claims, 202422,296
Drugs named by CMS237
Total drug cost$1.5M
Part D patients1,143

Dr. Chen's Part D claims by kind of drug, 2024

  • Generic19,805 claims89%
  • Brand-name2,384 claims11%
  • Other107 claims0%

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

  • Opioids5%1,125 of 22,296 claims
  • Antibiotics1%241 of 22,296 claims
  • Antipsychotics, patients 65 and over1%152 of 22,296 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: 20,2902024: 21,4396%

Drugs named by CMS: 237 in 2024, 231 in 2023.

See all prescribing by Dr. Chen

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

Dr. Alexander King Chen scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chen for performance year 2024, reported through an alternative payment model (APM). Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chen as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Chen's MIPS scores, performance year 2024

  • 100of 100Final score
  • 86.3of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Alexander King Chen received $214 in industry payments from 2017 to 2024

CMS Open Payments shows 5 general payments to Dr. Chen from 4 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $137.

General payments to Dr. Chen by program year, 2017 to 2024

Companies that paid Dr. Chen the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Chen

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Alexander King Chen has 1 award and honors on record

Dmand AI lists 1 award for Dr. Chen, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Chen

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Alexander King Chen graduated from John A. Burns School of Medicine

Dr. Chen graduated from John A. Burns School of Medicine in 1990. Dr. Chen is a member of ACP, AMA, California Medical Association and Sierra Sacramento Valley Medical Society.

  1. Medical schoolJohn A. Burns School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Alexander King Chen accepts plans from 12 insurance carriers

Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Alliant Health Plans
  • Blue Cross and Blue Shield of Kansas City
  • +4 more carriersWith a free account

Plan types Dr. Chen accepts, by number of carriers

  1. PPO8
  2. HMO6
  3. Medicare6
  4. EPO4
  5. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. Alexander King Chen'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 services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
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 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
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 Dr. Alexander King 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. Alexander King Chen's NPI number?

Dr. Alexander King Chen's NPI number is 1164537858. It was assigned on August 20, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Alexander King Chen?

Dr. Alexander King Chen is an internist in Woodland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Alexander King Chen practice?

Dr. Chen practices at 632 W. Gibson Rd, Woodland, CA 95695. Dr. Chen's primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dmand AI also links Dr. Chen to 5 home health agencies, 1 group practice or clinic, 1 hospice and 1 skilled nursing facility.

What is Dr. Alexander King Chen's office phone number?

The practice phone on file for Dr. Chen is (530) 668-2632.

What is Dr. Alexander King Chen's medical license number?

Dr. Chen holds California license G85900, one of the licenses on file in 3 states.

Which states has Dr. Alexander King Chen been licensed in?

Dmand AI has state licenses on file for Dr. Chen in California (2000 to 2026), New York (1996 to 2001) and Connecticut (2000).

Which hospitals is Dr. Alexander King Chen affiliated with?

Dr. Chen is affiliated with Dignity Health - Woodland Memorial Hospital.

What medical group is Dr. Alexander King Chen part of?

Dr. Chen is linked to Mercy Medical Group.

Does Dr. Alexander King Chen accept Medicare?

Yes. CMS data shows Dr. Chen billed Medicare for 3,594 services in 2024, and Dr. Chen accepts Medicare assignment.

Does Dr. Alexander King Chen offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.

Show 9 more questionsShow fewer questions

What is Dr. Alexander King Chen's MIPS score?

Dr. Chen's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).

How many Medicare patients does Dr. Alexander King Chen see?

CMS counts 676 Medicare patients who saw Dr. Chen in 2024, with an average age of 77.

Is Dr. Alexander King Chen board certified?

Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Alexander King Chen bill to Medicare?

In 2024, Dr. Chen's most billed Medicare services were injected or infused drug (J0897), office visit, established patient (99214) and office visit, established patient (99213).

Where did Dr. Alexander King Chen go to medical school?

Dr. Chen graduated from John A. Burns School of Medicine in 1990.

What drugs does Dr. Alexander King Chen prescribe most?

In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Losartan Potassium.

Has Dr. Alexander King Chen received payments from drug or device companies?

CMS Open Payments shows $214 in general payments to Dr. Chen from 4 companies from 2017 to 2024. The largest total came from Amgen Inc.

How long has Dr. Alexander King Chen been practicing?

Dr. Chen graduated from medical school in 1990, 36 years ago.

What insurance does Dr. Alexander King Chen accept?

Dr. Chen is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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