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Dr. Allan Chen, MD
NPI1003829326PAC ID0042266280
- Medicare services, 2019
- 15
- Part D claims, 2024
- 9,434
- Publications
- 1
- Hospital affiliations
- 1
- Industry payments
- $551
- Practice address
- 6041 Cadillac Ave, Los Angeles, CA 90034
- Practice phone
- Call (213) 857-2201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Allan Chen is an internist in Los Angeles, California
Dr. Chen practices at West Los Angeles Medical Center in Los Angeles, California, part of Kaiser Permanente.
Dr. Chen's NPI, 1003829326, was assigned on August 15, 2006. Dr. Chen graduated from Yale School of Medicine in 1996. Dr. Chen holds California license A065639.
NPI and contact details
- NPI
- 1003829326NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042266280
- NPI enumeration date
- August 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (213) 857-2201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Allan Chen practices at West Los Angeles Medical Center in Los Angeles, California
Dr. Chen's primary practice is West Los Angeles Medical Center, at 6041 Cadillac Ave, Los Angeles, CA 90034 in Los Angeles County. The practice phone is (213) 857-2201.
- West Los Angeles Medical Center6041 Cadillac Ave, Los Angeles, CA 90034 · Los Angeles CountyPhone(213) 857-2201
Source: Dmand AI Affiliation Data
Dr. Allan Chen is affiliated with 2 sites of care and 1 medical group
Dr. Chen's primary practice is West Los Angeles Medical Center in Los Angeles, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Chen to 1 more dialysis center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Allan 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 |
|---|---|
| West Los Angeles Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Allan 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. Dr. Chen is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists contact dermatitis, high cholesterol, muscle pain, fibromyalgia, and limb pain, plantar fasciitis, traumatic arthropathy, underactive thyroid and upper respiratory infection (URI) 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 California1,242internists in Los Angeles103internists at West Los Angeles Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Allan Chen billed Medicare for 15 services in 2019
CMS data shows 15 Medicare services from Dr. Chen across 1 procedure code in 2019, all of them office visits. Medicare paid $294 for them. Every service was in an office.
Medicare services, 201915
Paid by Medicare$294
Procedure codes1
Dr. Chen's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 412019: 1563%
Dr. Chen compared with the California median for internists, 2019
- Dr. Chen
- California median
- Medicare services
- 15vs 36196% below
- Part D claims
- 8,820vs 42121.0 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Chen's most billed Medicare procedure codes, 2019
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 internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Allan Chen's patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 63, with 49% 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 63
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Allan Chen wrote 9,434 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 9,434 Medicare Part D claims for 775 patients. 88% of them were for generic drugs. CMS names the drug for 8,820 of them, across 117 drugs with 11 or more claims each, at $589,300 in total drug cost. In 2023, CMS named 9,046 claims across 128 drugs.
Part D claims, 20249,434
Drugs named by CMS117
Total drug cost$589,300
Part D patients775
Dr. Chen's Part D claims by kind of drug, 2024
- Generic8,285 claims88%
- Brand-name1,037 claims11%
- Other112 claims1%
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
- Opioids3%322 of 9,434 claims
- Antibiotics1%80 of 9,434 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: 9,0462024: 8,8202%
Drugs named by CMS: 117 in 2024, 128 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. Allan 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. Allan Chen has 1 publication on record
Dmand AI links 1 paper to Dr. Chen.
Papers1
Recent publications by Dr. Chen
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 internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Allan Chen received $551 in industry payments from 2016 to 2022
CMS Open Payments shows 7 general payments to Dr. Chen from 6 drug and device companies from 2016 to 2022. Travel and lodging make up the largest share, 60% of the total. RefleXion Medical, Inc. paid the most, $329.
General payments to Dr. Chen by program year, 2016 to 2022
General payments to Dr. Chen by kind, 2016 to 2022
$551in total
- Travel and lodging$32960%
- Food and beverage$22240%
Companies that paid Dr. Chen the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Allan Chen has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Chen, most recently CMS Stage 1 2012 in 2013.
Awards and honors for Dr. Chen
- 2013
- CMS Stage 1 2012
- NCQA HSRP
- 2012
- NCQA DRP
Source: Dmand AI Professional Profile Data
Dr. Allan Chen graduated from Yale School of Medicine
Dr. Chen graduated from Yale School of Medicine in 1996.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Allan Chen accepts plans from 2 insurance carriers
Dr. Chen is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chen accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Allan 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 DataDmand AI Org Hierarchy 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)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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Allan 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. Allan Chen's NPI number?
Dr. Allan Chen's NPI number is 1003829326. It was assigned on August 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Allan Chen?
Dr. Allan Chen is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Allan Chen practice?
Dr. Chen practices at 6041 Cadillac Ave, Los Angeles, CA 90034. Dr. Chen's primary practice is West Los Angeles Medical Center in Los Angeles, California, part of Kaiser Permanente. Dmand AI also links Dr. Chen to 1 dialysis center.
What is Dr. Allan Chen's office phone number?
The practice phone on file for Dr. Chen is (213) 857-2201.
What is Dr. Allan Chen's medical license number?
Dr. Chen holds California license A065639.
Which hospitals is Dr. Allan Chen affiliated with?
Dr. Chen practices at West Los Angeles Medical Center in Los Angeles, California.
What medical group is Dr. Allan Chen part of?
Dr. Chen is linked to Southern California Permanente Medical Group.
Does Dr. Allan Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 15 services in 2019, and Dr. Chen accepts Medicare assignment.
Does Dr. Allan Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chen as offering telehealth services.
Is Dr. Allan Chen board certified?
Yes. Dr. Chen is board certified in internal medicine by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Allan Chen bill to Medicare?
In 2019, Dr. Chen's most billed Medicare services were office visit, established patient (99212).
Where did Dr. Allan Chen go to medical school?
Dr. Chen graduated from Yale School of Medicine in 1996.
What drugs does Dr. Allan Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Allan Chen received payments from drug or device companies?
CMS Open Payments shows $551 in general payments to Dr. Chen from 6 companies from 2016 to 2022. The largest total came from RefleXion Medical, Inc.
How long has Dr. Allan Chen been practicing?
Dr. Chen graduated from medical school in 1996, 30 years ago.
Does Dr. Allan Chen do research?
Dmand AI links 1 publication to Dr. Chen.
What insurance does Dr. Allan Chen accept?
Dr. Chen is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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