J Invest Dermatol
Deuterium OxideKeratinocytesKeratins
Dr. Christine J. Chai, MD
NPI1528042397PAC ID1355377698
- Medicare services, 2024
- 1,223
- Medicare patients, 2024
- 476
- Part D claims, 2024
- 1,251
- Publications
- 1
- MIPS score, 2024
- 81
- Practice address
- One Hoag Drive, Newport Beach, CA 92663
- Practice phone
- Call (949) 764-4624
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chai'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. Christine J. Chai is a gynecology physician in Newport Beach, California
Dr. Chai practices at Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian.
Dr. Chai's NPI, 1528042397, was assigned on December 5, 2005. Dr. Chai graduated from George Washington University School of Medicine and Health Sciences in 1988. Dr. Chai holds California license G067829.
NPI and contact details
- NPI
- 1528042397NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355377698
- NPI enumeration date
- December 5, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 764-4624
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christine J. Chai practices at 2 locations in Newport Beach, California
Dr. Chai's primary practice is Hoag Hospital Newport Beach, at One Hoag Drive, Newport Beach, CA 92663 in Orange County. The practice phone is (949) 764-4624. Dr. Chai also practices at Hoag Hospital Newport Beach, 1 Hoag Dr, Newport Beach, CA 92663.
- Hoag Hospital Newport BeachPrimaryOne Hoag Drive, Newport Beach, CA 92663 · Orange CountyPhone(949) 764-4624
- Hoag Hospital Newport Beach1 Hoag Dr, Newport Beach, CA 92663 · Orange CountyPhone(949) 764-4624
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Christine J. Chai is affiliated with 5 sites of care and 1 medical group
Dr. Chai's primary practice is Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian. Dr. Chai is also affiliated with Providence Mission Hospital. The medical group on file is Newport Diagnostic Center. Dmand AI also links Dr. Chai to 2 more hospitals and 1 group practice or clinic, each named with a free account.
Providence Mission HospitalNewport Diagnostic Center2 hospitalsNames with a free account1 group practice or clinicName with a free account
See all 6 affiliations for Dr. ChaiSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christine J. Chai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chai practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hoag Hospital Newport Beach | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Chai practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hoag Memorial Hospital Presbyterian and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christine J. Chai is one of 297 gynecology physicians in California
Gynecology is Dr. Chai's primary specialty in the NPI Registry, under taxonomy code 207VG0400X. Dr. Chai is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Chai is licensed in California.
Specialties and state licenses
- Gynecology, CaliforniaPrimary
Clinical focus
Dmand AI lists bladder disease, menopause, ovarian cyst, pelvic prolapse, UTI and vaginal infection among the conditions Dr. Chai treats.
Gynecology physicians near Dr. Chai
Counts of gynecology physicians with a Dmand AI profile, by place and practice. Each opens the list.
297gynecology physicians in California
7gynecology physicians in Newport Beach
4gynecology physicians at Hoag Hospital Newport BeachSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christine J. Chai billed Medicare for 1,223 services in 2024
CMS data shows 1,223 Medicare services from Dr. Chai across 7 procedure codes in 2024, for 476 Medicare patients. Medicare paid $67,373 for them. Every service was in an office.
Medicare services, 20241,223
Medicare patients476
Paid by Medicare$67,373
Procedure codes7
Dr. Chai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 6972024: 6625%
- Office and hospital visits
- 2023: 5712024: 5612%
Dr. Chai compared with the California median for gynecology physicians, 2024
- Dr. Chai
- California median
- Medicare services
- 1,223vs 10411.8 times
- Medicare patients
- 476vs 905.3 times
- Part D claims
- 1,062vs 6017.7 times
Medians across 253 gynecology physicians in California with Dmand AI profiles that report each measure.
Dr. Chai'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.
Need commercial claims for Dr. Chai?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chai and other gynecology physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christine J. Chai treated 476 Medicare patients in 2024, average age 74
CMS counts 476 Medicare patients who saw Dr. Chai in 2024. The largest group is 65 to 74, with 275 patients. 75% of them have high cholesterol, and 53% have high blood pressure. Their average risk score is 0.74, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chai's median patient age at 68, with 98% women.
Medicare patients, 2024476
Average age74
Average risk score0.74
Dr. Chai's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Chai's Medicare patients, 2024
- High cholesterol75%
- High blood pressure53%
- Arthritis48%
- Osteoporosis33%
- Cancer22%
- Mood disorders19%
- Depression17%
- Anxiety16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women98%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christine J. Chai wrote 1,251 Medicare Part D claims in 2024
In 2024, Dr. Chai wrote 1,251 Medicare Part D claims for 278 patients. 80% of them were for generic drugs. CMS names the drug for 1,062 of them, across 29 drugs with 11 or more claims each, at $105,326 in total drug cost. In 2023, CMS named 959 claims across 27 drugs.
Part D claims, 20241,251
Drugs named by CMS29
Total drug cost$105,326
Part D patients278
Dr. Chai's Part D claims by kind of drug, 2024
- Generic1,000 claims80%
- Brand-name251 claims20%
Dr. Chai'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. Chai's Part D claims, 2024
- Antibiotics6%77 of 1,251 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: 9592024: 1,06211%
Drugs named by CMS: 29 in 2024, 27 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. Christine J. Chai scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Chai for performance year 2024, reported as part of a group. Dr. Chai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chai as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chai's MIPS scores, performance year 2024
- 81of 100Final score
- 73.3of 100Quality
- 92of 100Promoting Interoperability
- 40of 100Improvement Activities
- 62of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Find gynecology physicians like Dr. Chai by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Christine J. Chai has 1 publication on record
Dmand AI links 1 paper to Dr. Chai. Dr. Chai's most frequent co-author is Marc Kopel Hellerstein, MD.
Papers1
Dr. Chai's most frequent co-authors
Recent publications by Dr. Chai
See who Dr. Chai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chai works with, so you can find a warm path to the right gynecology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Christine J. Chai received $6,428 in industry payments from 2016 to 2025
CMS Open Payments shows 334 general payments to Dr. Chai from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 88% of the total. Pfizer Inc. paid the most, $1,511.
General payments to Dr. Chai by program year, 2016 to 2025
General payments to Dr. Chai by kind, 2016 to 2025
$6.4Kin total
- Food and beverage$5,63088%
- Consulting fees$62410%
- Education$1602%
- Gifts$140%
Companies that paid Dr. Chai 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. Christine J. Chai has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Chai, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Chai
- 2013
- CMS Stage 1 EHR
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Christine J. Chai graduated from George Washington University School of Medicine and Health Sciences
Dr. Chai graduated from George Washington University School of Medicine and Health Sciences in 1988. Dr. Chai is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Christine J. Chai accepts plans from 1 insurance carrier
Dr. Chai is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Christine J. Chai'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 Affiliation DataDmand AI Practice 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 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) |
| 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. Christine J. Chai
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. Christine J. Chai's NPI number?
Dr. Christine J. Chai's NPI number is 1528042397. It was assigned on December 5, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Christine J. Chai?
Dr. Christine J. Chai is a gynecology physician in Newport Beach, California. The primary specialty in the NPI Registry is Gynecology Physician (taxonomy code 207VG0400X).
Where does Dr. Christine J. Chai practice?
Dr. Chai practices at One Hoag Drive, Newport Beach, CA 92663. Dr. Chai also practices at 1 Hoag Dr, Newport Beach, CA 92663. Dr. Chai's primary practice is Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian. Dmand AI also links Dr. Chai to 2 hospitals and 1 group practice or clinic.
What is Dr. Christine J. Chai's office phone number?
The practice phone on file for Dr. Chai is (949) 764-4624.
What is Dr. Christine J. Chai's medical license number?
Dr. Chai holds California license G067829.
Which hospitals is Dr. Christine J. Chai affiliated with?
Dr. Chai practices at Hoag Hospital Newport Beach in Newport Beach, California. Dr. Chai is also affiliated with Providence Mission Hospital. Dmand AI links Dr. Chai to 2 more hospitals.
What medical group is Dr. Christine J. Chai part of?
Dr. Chai is linked to Newport Diagnostic Center.
Does Dr. Christine J. Chai accept Medicare?
Yes. CMS data shows Dr. Chai billed Medicare for 1,223 services in 2024, and Dr. Chai accepts Medicare assignment.
Does Dr. Christine J. Chai offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chai as offering telehealth services.
What is Dr. Christine J. Chai's MIPS score?
Dr. Chai's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Christine J. Chai see?
CMS counts 476 Medicare patients who saw Dr. Chai in 2024, with an average age of 74.
Is Dr. Christine J. Chai board certified?
Yes. Dr. Chai is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Christine J. Chai bill to Medicare?
In 2024, Dr. Chai's most billed Medicare services were medicare service (G0328), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Christine J. Chai go to medical school?
Dr. Chai graduated from George Washington University School of Medicine and Health Sciences in 1988.
What drugs does Dr. Christine J. Chai prescribe most?
In 2024 Medicare Part D data, Dr. Chai's most prescribed drugs by claims were Estradiol, Progesterone and Estradiol (Twice Weekly).
Has Dr. Christine J. Chai received payments from drug or device companies?
CMS Open Payments shows $6,428 in general payments to Dr. Chai from 35 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Christine J. Chai been practicing?
Dr. Chai graduated from medical school in 1988, 38 years ago.
Does Dr. Christine J. Chai do research?
Dmand AI links 1 publication to Dr. Chai.
Who does Dr. Christine J. Chai publish with?
Dr. Chai's most frequent co-authors are Marc Kopel Hellerstein, MD (1 shared paper).
What insurance does Dr. Christine J. Chai accept?
Dr. Chai is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to gynecology practices?
See gynecology physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card