Annie Chen, MD
Pulmonary Disease Physician · Irvine, CA
Annie Chen, MD is a pulmonary disease physician with a practice address in Irvine, California, and NPI 1043771173, issued on Mar 29, 2019. Check the license (California A179927, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Annie Chen
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- A179927 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Fivepoint, Irvine, CA 92618
- Phone
- (800) 826-4673
- Enumerated
- Mar 29, 2019
- Record last updated
- Sep 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20250904003758); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 1000 Fivepoint
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Alessi, PA-CPhysician Assistant1962711838
- Tara Anderson, PA-CPhysician Assistant1770058349
- Aubree Ashdown, PA-CPhysician Assistant1679244503
- Ghazal Bahri, M.D.Hospitalist Physician1770013146
- Meg Camille Baldonado, FNP-CFamily Nurse Practitioner1346602604
- Joseph Barrera, FNPFamily Nurse Practitioner1306289491
Verify Annie Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A179927Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
83 Medicare Part D claims for 15 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Albuterol Sulfate Hfa20 claims
- Incruse Ellipta11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $13.98
1 payment: food and beverage; the largest payer was Paratek Pharmaceuticals, Inc. The 8,806 providers of this specialty with any payment received $5,159.88 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- City OF Hope Medical FoundationIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Annie Chen among 1,443 pulmonary disease physician records in California
Annie Chen, MD is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 95% of them.
- NPI issued2019 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2019 · median 2002 among the 1,061 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Irvine → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Jonathan Ahdoot, M.D.Irvine, CA 926181568559102
- Saba Hamiduzzaman, M.D.Irvine, CA 926181700011004
- Roopam Jariwal, MDIrvine, CA 926181801452883
- Adie Kalansky, MDIrvine, CA 926181740660752
- Johnny Kim, M.D.Irvine, CA 926181568676252
- Jung Kim, MDIrvine, CA 926181093202103
- George Yuen, M.D.Irvine, CA 926181184722613
- Rainy Zhang, MDIrvine, CA 926181568924199
Common questions
What is Annie Chen, MD's NPI number?
Annie Chen, MD's National Provider Identifier (NPI) is 1043771173, issued on Mar 29, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Annie Chen, MD located?
The NPPES record lists a practice address at 1000 Fivepoint, Irvine, CA, 92618. Phone: (800) 826-4673. Providers update this record themselves, so call before visiting.
How can I verify Annie Chen, MD's license?
NPPES lists California license number A179927, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Annie Chen, MD prescribe under Medicare Part D?
In 2024, Annie Chen, MD had 83 Medicare Part D claims for 15 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.