Dr. Christopher Lee Paiji, MD

  • Orange, CA
  • Gastroenterologist
NPI1720519010PAC ID5698043859
Medicare services, 2024
41
Medicare patients, 2024
64
Part D claims, 2024
113
Publications
9
MIPS score, 2024
100
Practice address
101 City Drive South, Orange, CA 92868
Practice phone
Call (714) 456-7890
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCI Health - Orange

Hospital · Orange, California

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Dr. Christopher Lee Paiji is a gastroenterologist in Orange, California

Dr. Paiji practices at UCI Health - Orange in Orange, California, part of UC Irvine.

Dr. Paiji's NPI, 1720519010, was assigned on March 27, 2017. Dr. Paiji graduated from UC Irvine School of Medicine in 2017. Dr. Paiji holds California license A170265.

NPI and contact details
Medicare PAC ID
5698043859
NPI enumeration date
March 27, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(714) 456-7890
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
35
Medical school graduation
2017

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

Dr. Christopher Lee Paiji practices at UCI Health - Orange in Orange, California

Dr. Paiji's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.

  • UCI Health - Orange
    101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890

Source: Dmand AI Affiliation Data

Dr. Christopher Lee Paiji is affiliated with 1 site of care and 1 medical group

Dr. Paiji's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is UCI Health Physicians.

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

Dmand AI tracks the EHR system at Dr. Christopher Lee Paiji's practice

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

EHR by site
SiteEHR vendor and product
UCI Health - OrangeAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Christopher Lee Paiji is one of 1,977 gastroenterologists in California

Gastroenterology is Dr. Paiji's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Paiji is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Paiji is licensed in California.

Specialties and state licenses

  • Gastroenterology, CaliforniaPrimaryLicense A170265 · 2020 to 2026 · taxonomy 207RG0100X

Gastroenterologists near Dr. Paiji

Counts of gastroenterologists 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. Christopher Lee Paiji billed Medicare for 41 services in 2024

CMS data shows 41 Medicare services from Dr. Paiji across 3 procedure codes in 2024, for 64 Medicare patients. Medicare paid $3,254 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202441
Medicare patients64
Paid by Medicare$3,254
Procedure codes3

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

  • 2023
  • 2024
Imaging
2023: 02024: 14
Office and hospital visits
2023: 122024: 1417%
Surgery
2023: 02024: 13

Dr. Paiji compared with the California median for gastroenterologists, 2024

  • Dr. Paiji
  • California median
Medicare services
41vs 58693% below
Medicare patients
64vs 30279% below
Part D claims
85vs 38078% below

Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.

Dr. Paiji'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. Paiji

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

Dr. Christopher Lee Paiji treated 64 Medicare patients in 2024, average age 71

CMS counts 64 Medicare patients who saw Dr. Paiji in 2024. The largest group is 65 to 74, with 31 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 36% are also on Medicaid. Their average risk score is 1.85, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Paiji's median patient age at 64, with 55% women.

Medicare patients, 202464
Average age71
Average risk score1.85
Also on Medicaid36%

Dr. Paiji's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Paiji's Medicare patients by sex, 2024

  • Women3453%
  • Men3047%

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

  1. High cholesterol75%
  2. High blood pressure72%
  3. Diabetes45%
  4. Arthritis44%
  5. Chronic kidney disease38%
  6. Ischemic heart disease38%
  7. Mood disorders34%
  8. Depression33%

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

Dr. Paiji's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women55%
  • Men44%

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

Dr. Christopher Lee Paiji wrote 113 Medicare Part D claims in 2024

In 2024, Dr. Paiji wrote 113 Medicare Part D claims for 67 patients. 90% of them were for generic drugs. CMS names the drug for 85 of them, across 5 drugs with 11 or more claims each, at $7,425 in total drug cost. In 2023, CMS named 15 claims across 1 drug.

Part D claims, 2024113
Drugs named by CMS5
Total drug cost$7,425
Part D patients67

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

  • Generic102 claims90%
  • Brand-name11 claims10%

Dr. Paiji'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. Paiji's Part D claims, 2024

  • Antibiotics19%22 of 113 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: 152024: 85467%

Drugs named by CMS: 5 in 2024, 1 in 2023.

See all prescribing by Dr. Paiji

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. Christopher Lee Paiji 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. Paiji for performance year 2024, reported through an alternative payment model (APM). Dr. Paiji accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Paiji as offering telehealth. CMS counts 406 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Paiji, more than 98% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Paiji's MIPS scores, performance year 2024

  • 100of 100Final score
  • 83.7of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

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

Where Dr. Paiji ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
98th percentile406 procedures
Colonoscopy
84th percentile121 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. Christopher Lee Paiji has 9 publications on record

Dmand AI links 9 papers to Dr. Paiji, published from 2013 to 2023. 2020 was the busiest year, with 2. The most frequent topics are Cholangiopancreatography, Endoscopic Retrograde and Magnetic Resonance Imaging. Dr. Paiji has published most often in Endoscopy. Dr. Paiji's most frequent co-authors are Mouen A. Khashab, MD, Omid Sanaei, MD and Vivek Kumbhari, MD.

Papers9
Years published2013 to 2023

Dr. Paiji's papers by year, 2013 to 2023

Topics Dr. Paiji writes about most

  • Cholangiopancreatography, Endoscopic Retrograde
  • Magnetic Resonance Imaging

Dr. Paiji's most frequent co-authors

Recent publications by Dr. Paiji

See all 9 publications and co-authors

See who Dr. Paiji researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Paiji works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Christopher Lee Paiji received $62,707 in industry payments from 2023 to 2025

CMS Open Payments shows 71 general payments to Dr. Paiji from 9 drug and device companies from 2023 to 2025. Grants make up the largest share, 80% of the total. Boston Scientific Corporation paid the most, $56,527.

General payments to Dr. Paiji by program year, 2023 to 2025

General payments to Dr. Paiji by kind, 2023 to 2025

$62.7Kin total
  • Grants$50,00080%
  • Travel and lodging$5,3339%
  • Food and beverage$4,5837%
  • Consulting fees$2,7904%

Companies that paid Dr. Paiji the most, 2023 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Paiji

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

Dr. Christopher Lee Paiji graduated from UC Irvine School of Medicine

Dr. Paiji graduated from UC Irvine School of Medicine in 2017. Dr. Paiji is a member of AOA.

  1. Medical schoolUC Irvine School of Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Christopher Lee Paiji accepts plans from 12 insurance carriers

Dr. Paiji is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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

Plan types Dr. Paiji accepts, by number of carriers

  1. PPO9
  2. Medicare8
  3. HMO6
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Christopher Lee Paiji'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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
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. Christopher Lee Paiji

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. Christopher Lee Paiji's NPI number?

Dr. Christopher Lee Paiji's NPI number is 1720519010. It was assigned on March 27, 2017, and it is active in the NPI Registry.

What kind of doctor is Dr. Christopher Lee Paiji?

Dr. Christopher Lee Paiji is a gastroenterologist in Orange, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Christopher Lee Paiji practice?

Dr. Paiji practices at 101 City Drive South, Orange, CA 92868. Dr. Paiji's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine.

What is Dr. Christopher Lee Paiji's office phone number?

The practice phone on file for Dr. Paiji is (714) 456-7890.

What is Dr. Christopher Lee Paiji's medical license number?

Dr. Paiji holds California license A170265.

Which hospitals is Dr. Christopher Lee Paiji affiliated with?

Dr. Paiji practices at UCI Health - Orange in Orange, California.

What medical group is Dr. Christopher Lee Paiji part of?

Dr. Paiji is linked to UCI Health Physicians.

Does Dr. Christopher Lee Paiji accept Medicare?

Yes. CMS data shows Dr. Paiji billed Medicare for 41 services in 2024, and Dr. Paiji accepts Medicare assignment.

Does Dr. Christopher Lee Paiji offer telehealth?

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

What is Dr. Christopher Lee Paiji's MIPS score?

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

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Christopher Lee Paiji see?

CMS counts 64 Medicare patients who saw Dr. Paiji in 2024, with an average age of 71.

Is Dr. Christopher Lee Paiji board certified?

Yes. Dr. Paiji is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Dr. Christopher Lee Paiji bill to Medicare?

In 2024, Dr. Paiji's most billed Medicare services were diagnostic imaging (74328), hospital inpatient care (99222) and surgery: digestive system (43259).

Where did Dr. Christopher Lee Paiji go to medical school?

Dr. Paiji graduated from UC Irvine School of Medicine in 2017.

What drugs does Dr. Christopher Lee Paiji prescribe most?

In 2024 Medicare Part D data, Dr. Paiji's most prescribed drugs by claims were Pantoprazole Sodium, Sucralfate and Ciprofloxacin HCl.

Has Dr. Christopher Lee Paiji received payments from drug or device companies?

CMS Open Payments shows $62,707 in general payments to Dr. Paiji from 9 companies from 2023 to 2025. The largest total came from Boston Scientific Corporation.

How long has Dr. Christopher Lee Paiji been practicing?

Dr. Paiji graduated from medical school in 2017, 9 years ago.

Does Dr. Christopher Lee Paiji do research?

Dmand AI links 9 publications to Dr. Paiji, published from 2013 to 2023.

Who does Dr. Christopher Lee Paiji publish with?

Dr. Paiji's most frequent co-authors are Mouen A. Khashab, MD (4 shared papers), Omid Sanaei, MD (4 shared papers) and Vivek Kumbhari, MD (3 shared papers).

What insurance does Dr. Christopher Lee Paiji accept?

Dr. Paiji is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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