Attitude of Health PersonnelEducation, VeterinaryNeurology
Dr. Annie Chen, MD
NPI1043771173PAC ID9234631755
- Part D claims, 2024
- 83
- Publications
- 35
- Industry payments
- $798
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
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Dr. Annie Chen is a pulmonologist in Duarte, California
Dr. Chen practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Chen's NPI, 1043771173, was assigned on March 29, 2019. Dr. Chen graduated from University of Central Florida College of Medicine in 2019. Dr. Chen holds California license A179927.
NPI and contact details
- NPI
- 1043771173NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234631755
- NPI enumeration date
- March 29, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Annie Chen practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Chen's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Annie Chen is affiliated with 3 sites of care and 1 medical group
Dr. Chen's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. The medical group on file is City of Hope. Dmand AI also links Dr. Chen to 1 more group practice or clinic and 1 other site, each named with a free account.
City of Hope Comprehensive Cancer Center - DuartePrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Annie Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Annie Chen is one of 1,339 pulmonologists in California
Pulmonary disease is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chen is licensed in California.
Specialties and state licenses
- Pulmonary disease, CaliforniaPrimary
Pulmonologists near Dr. Chen
Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.
1,339pulmonologists in California
6pulmonologists in Duarte
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Annie Chen's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 66, with 60% 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 66
Patient panel by sex, all payers
- Women60%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Annie Chen wrote 83 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 83 Medicare Part D claims for 15 patients. 48% of them were for generic drugs. CMS names the drug for 31 of them, across 2 drugs with 11 or more claims each, at $6,168 in total drug cost. In 2023, CMS named 24 claims across 2 drugs.
Part D claims, 202483
Drugs named by CMS2
Total drug cost$6,168
Part D patients15
Dr. Chen's Part D claims by kind of drug, 2024
- Generic40 claims48%
- Brand-name43 claims52%
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: 242024: 3129%
Drugs named by CMS: 2 in 2024, 2 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
Dr. Annie Chen offers telehealth to Medicare patients
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
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Annie Chen has 35 publications on record
Dmand AI links 35 papers to Dr. Chen, published from 2011 to 2024. 2018 was the busiest year, with 7. The most frequent topics are Dogs, Dog Diseases and Pituitary Neoplasms. Dr. Chen has published most often in J Vet Intern Med. Dr. Chen's most frequent co-authors are Matthew J. Budoff, MD, Tiffany S. Chan, MD and Nader Kamangar, MD.
Papers35
Years published2011 to 2024
Dr. Chen's papers by year, 2014 to 2024
Topics Dr. Chen writes about most
- Dogs
- Dog Diseases
- Pituitary Neoplasms
- Cats
- Hypophysectomy
- Cat Diseases
- Magnetic Resonance Imaging
- Adenoma
Dr. Chen's most frequent co-authors
- Matthew J. Budoff, MD1 shared paper
- Tiffany S. Chan, MD1 shared paper
- Nader Kamangar, MD1 shared paper
Recent publications by Dr. Chen
Vet Clin Pathol
AdenomaCat DiseasesCats
Vet Clin Pathol
Creatine KinaseDogsIsoenzymes
J Vet Intern Med
BiopsyCollagenDog Diseases
J Am Vet Med Assoc
Cerebellar AtaxiaDog DiseasesDogs
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right pulmonologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Annie Chen received $798 in industry payments from 2022 to 2025
CMS Open Payments shows 10 general payments to Dr. Chen from 6 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Shionogi Inc paid the most, $199.
General payments to Dr. Chen by program year, 2022 to 2025
Companies that paid Dr. Chen the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Annie Chen graduated from University of Central Florida College of Medicine
Dr. Chen graduated from University of Central Florida College of Medicine in 2019.
- Medical school
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Sources for Dr. Annie 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 DataDmand AI Org Hierarchy Data |
| 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)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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Annie 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. Annie Chen's NPI number?
Dr. Annie Chen's NPI number is 1043771173. It was assigned on March 29, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Annie Chen?
Dr. Annie Chen is a pulmonologist in Duarte, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Annie Chen practice?
Dr. Chen practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Chen's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Chen to 1 group practice or clinic and 1 other site.
What is Dr. Annie Chen's office phone number?
The practice phone on file for Dr. Chen is (800) 826-4673.
What is Dr. Annie Chen's medical license number?
Dr. Chen holds California license A179927.
What medical group is Dr. Annie Chen part of?
Dr. Chen is linked to City of Hope.
Does Dr. Annie Chen accept Medicare?
Yes. CMS lists Dr. Chen as accepting Medicare assignment.
Does Dr. Annie Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
Is Dr. Annie Chen board certified?
Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Annie Chen go to medical school?
Dr. Chen graduated from University of Central Florida College of Medicine in 2019.
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What drugs does Dr. Annie Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Albuterol Sulfate Hfa and Incruse Ellipta.
Has Dr. Annie Chen received payments from drug or device companies?
CMS Open Payments shows $798 in general payments to Dr. Chen from 6 companies from 2022 to 2025. The largest total came from Shionogi Inc.
How long has Dr. Annie Chen been practicing?
Dr. Chen graduated from medical school in 2019, 7 years ago.
Does Dr. Annie Chen do research?
Dmand AI links 35 publications to Dr. Chen, published from 2011 to 2024.
Who does Dr. Annie Chen publish with?
Dr. Chen's most frequent co-authors are Matthew J. Budoff, MD (1 shared paper), Tiffany S. Chan, MD (1 shared paper) and Nader Kamangar, MD (1 shared paper).
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