Dr. Andrew Philip Chen, MD
- Medicare services, 2024
- 18,706
- Medicare patients, 2024
- 1,876
- Part D claims, 2024
- 2,601
- MIPS score, 2024
- 94
- Industry payments
- $3,681
- Practice address
- 521 South Ham Lane, Lodi, CA 95242
- Practice phone
- Call (209) 333-0905
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lodi Outpatient Surgical Center
Surgery Center - Medicare-Certified · Lodi, California
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. Andrew Philip Chen is an ophthalmologist in Lodi, California
Dr. Chen practices at Lodi Outpatient Surgical Center in Lodi, California.
Dr. Chen's NPI, 1912014739, was assigned on August 25, 2006. Dr. Chen graduated from Loma Linda University School Of Medicine in 1990. Dr. Chen holds California license G72858.
- NPI
- 1912014739NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224014196
- NPI enumeration date
- August 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 333-0905
- 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. Andrew Philip Chen practices at Lodi Outpatient Surgical Center in Lodi, California
Dr. Chen's primary practice is Lodi Outpatient Surgical Center, at 521 South Ham Lane, Lodi, CA 95242. The practice phone is (209) 333-0905.
- Lodi Outpatient Surgical Center521 South Ham Lane, Lodi, CA 95242Phone(209) 333-0905
Source: Dmand AI Affiliation Data
Dr. Andrew Philip Chen is affiliated with 2 sites of care and 1 medical group
Dr. Chen's primary practice is Lodi Outpatient Surgical Center in Lodi, California. Dmand AI also links Dr. Chen to 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Andrew Philip 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 |
|---|---|
| Lodi Outpatient Surgical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Andrew Philip Chen is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Chen is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, cold sores or genital herpes, conjunctivitis, dry eye, eye infection or inflammation and eyelid inflammation among the conditions Dr. Chen treats.
Ophthalmologists near Dr. Chen
Counts of ophthalmologists 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
Dr. Andrew Philip Chen billed Medicare for 18,706 services in 2024
CMS data shows 18,706 Medicare services from Dr. Chen across 23 procedure codes in 2024, for 1,876 Medicare patients. Medicare paid $1,228,057 for them.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 3,6432024: 12,133233%
- Tests and treatments
- 2023: 4,6512024: 4,5432%
- Office and hospital visits
- 2023: 1,1202024: 1,0813%
- Surgery
- 2023: 8562024: 94911%
Where Dr. Chen's Medicare services took place, 2024
- In an office18,36598%
- In a facility3412%
Dr. Chen compared with the California median for ophthalmologists, 2024
- Dr. Chen
- California median
- Medicare services
- 18,706vs 1,07917.3 times
- Medicare patients
- 1,876vs 4214.5 times
- Part D claims
- 2,538vs 6184.1 times
Medians across 2,568 ophthalmologists 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Andrew Philip Chen treated 1,876 Medicare patients in 2024, average age 78
CMS counts 1,876 Medicare patients who saw Dr. Chen in 2024. The largest group is 75 to 84, with 810 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 76, with 62% women.
Dr. Chen's Medicare patients by age, 2024
Dr. Chen's Medicare patients by sex, 2024
- Women1,21365%
- Men66335%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Diabetes31%
- Chronic kidney disease25%
- Ischemic heart disease23%
- Anxiety18%
- Atrial fibrillation17%
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 76
Patient panel by sex, all payers
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Andrew Philip Chen wrote 2,601 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 2,601 Medicare Part D claims for 566 patients. 48% of them were for generic drugs. CMS names the drug for 2,538 of them, across 28 drugs with 11 or more claims each, at $402,700 in total drug cost. In 2023, CMS named 2,615 claims across 26 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic1,254 claims48%
- Brand-name1,347 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: 2,6152024: 2,5383%
Drugs named by CMS: 28 in 2024, 26 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. Andrew Philip Chen scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Chen for performance year 2024, reported as part of a group. Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 341 procedures of cataract surgery by Dr. Chen, more than 91% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Chen's MIPS scores, performance year 2024
- 94of 100Final score
- 94.7of 100Quality
- 40of 100Improvement Activities
- 83of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Chen ranks in Medicare procedure volume
- Cataract surgery
- 91st percentile341 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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. Andrew Philip Chen received $3,681 in industry payments from 2016 to 2025
CMS Open Payments shows 147 general payments to Dr. Chen from 28 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Alcon Laboratories Inc paid the most, $860.
General payments to Dr. Chen by program year, 2016 to 2025
General payments to Dr. Chen by kind, 2016 to 2025
- Food and beverage$3,50095%
- Education$1424%
- Entertainment$221%
- Gifts$170%
Companies that paid Dr. Chen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Andrew Philip Chen has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Chen, most recently AAO Fellow in 2013.
Awards and honors for Dr. Chen
- 2013
- AAO Fellow
- Undated
- ACS Fellow
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Andrew Philip Chen graduated from Loma Linda University School Of Medicine
Dr. Chen graduated from Loma Linda University School Of Medicine in 1990. Dr. Chen is a member of AAO and ACS.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Andrew Philip Chen accepts plans from 20 insurance carriers
Dr. Chen is in network with 20 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Humana
- Alliant Health Plans
- +12 more carriersWith a free account
Plan types Dr. Chen accepts, by number of carriers
- HMO12
- PPO11
- Medicare9
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Andrew Philip 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 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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. Andrew Philip 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. Andrew Philip Chen's NPI number?
Dr. Andrew Philip Chen's NPI number is 1912014739. It was assigned on August 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Andrew Philip Chen?
Dr. Andrew Philip Chen is an ophthalmologist in Lodi, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Andrew Philip Chen practice?
Dr. Chen practices at 521 South Ham Lane, Lodi, CA 95242. Dr. Chen's primary practice is Lodi Outpatient Surgical Center in Lodi, California. Dmand AI also links Dr. Chen to 1 group practice or clinic and 1 medical group.
What is Dr. Andrew Philip Chen's office phone number?
The practice phone on file for Dr. Chen is (209) 333-0905.
What is Dr. Andrew Philip Chen's medical license number?
Dr. Chen holds California license G72858.
Does Dr. Andrew Philip Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 18,706 services in 2024, and Dr. Chen accepts Medicare assignment.
What is Dr. Andrew Philip Chen's MIPS score?
Dr. Chen's MIPS final score for performance year 2024 is 94 out of 100, reported as part of a group.
How many Medicare patients does Dr. Andrew Philip Chen see?
CMS counts 1,876 Medicare patients who saw Dr. Chen in 2024, with an average age of 78.
Is Dr. Andrew Philip Chen board certified?
Yes. Dr. Chen is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Andrew Philip Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were injected or infused drug (J2777), injected or infused drug (J2781) and eye exam or test (92014).
Show 5 more questionsShow fewer questions
Where did Dr. Andrew Philip Chen go to medical school?
Dr. Chen graduated from Loma Linda University School Of Medicine in 1990.
What drugs does Dr. Andrew Philip Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Lumigan.
Has Dr. Andrew Philip Chen received payments from drug or device companies?
CMS Open Payments shows $3,681 in general payments to Dr. Chen from 28 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Andrew Philip Chen been practicing?
Dr. Chen graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Andrew Philip Chen accept?
Dr. Chen is in network with 20 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.
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