Dr. Christina Sun Gainey, MD
- Part D claims, 2024
- 66
- Hospital affiliations
- 1
- Industry payments
- $340
- Medical group
- 1
- State licenses
- 2
- Practice address
- 101 Manning Drive, Chapel Hill, NC 27514
- Practice phone
- Call (919) 966-4141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gainey'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. Christina Sun Gainey is a gastroenterologist in Los Angeles, California
Dr. Gainey practices at UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System.
Dr. Gainey's NPI, 1306340559, was assigned on March 22, 2018. Dr. Gainey holds North Carolina license 2021-01712.
- NPI
- 1306340559NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062741515
- NPI enumeration date
- March 22, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (919) 966-4141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christina Sun Gainey practices in Chapel Hill and Los Angeles
Dr. Gainey's primary practice is UNC Hospitals, at 101 Manning Drive, Chapel Hill, NC 27514 in Orange County. The practice phone is (919) 966-4141. The NPI Registry lists Dr. Gainey's practice address as 2051 Marengo St, Los Angeles, CA 90033.
- UNC HospitalsPrimary101 Manning Drive, Chapel Hill, NC 27514 · Orange CountyPhone(919) 966-4141
- NPI Registry address2051 Marengo St, Los Angeles, CA 90033 · Los Angeles CountyPhone(919) 966-3997
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Christina Sun Gainey is affiliated with 1 site of care and 1 medical group
Dr. Gainey's primary practice is UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System. The medical group on file is UNC Faculty Physicians.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christina Sun Gainey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gainey practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UNC Hospitals | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across University of North Carolina Health Care System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christina Sun Gainey is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Gainey's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Gainey's licenses on file in 2 states: North Carolina and California.
Specialties and state licenses
- Gastroenterology, North CarolinaPrimary
- Internal medicine, California
Gastroenterologists near Dr. Gainey
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. Christina Sun Gainey's patients have a median age of 25
Across all payers, Dmand AI patient panel data puts Dr. Gainey's median patient age at 25, with 100% women.
Dr. Gainey's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 25
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Christina Sun Gainey wrote 66 Medicare Part D claims in 2024
In 2024, Dr. Gainey wrote 66 Medicare Part D claims for 28 patients. 86% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $175 in total drug cost. In 2020, CMS named 50 claims across 4 drugs.
Dr. Gainey's Part D claims by kind of drug, 2024
- Generic57 claims86%
- Brand-name and other9 claims14%
Dr. Gainey's most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 502021: 1374%
Drugs named by CMS: 1 in 2021, 4 in 2020.
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
How Dr. Christina Sun Gainey takes part in Medicare
Dr. Gainey accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Christina Sun Gainey received $340 in industry payments from 2021 to 2025
CMS Open Payments shows 8 general payments to Dr. Gainey from 4 drug and device companies from 2021 to 2025. Education make up the largest share, 59% of the total. Janssen Pharmaceuticals, Inc paid the most, $214.
General payments to Dr. Gainey by program year, 2021 to 2025
General payments to Dr. Gainey by kind, 2021 to 2025
- Education$19959%
- Food and beverage$14141%
Companies that paid Dr. Gainey the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Christina Sun Gainey'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Christina Sun Gainey
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. Christina Sun Gainey's NPI number?
Dr. Christina Sun Gainey's NPI number is 1306340559. It was assigned on March 22, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Christina Sun Gainey?
Dr. Christina Sun Gainey is a gastroenterologist in Los Angeles, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Christina Sun Gainey practice?
Dr. Gainey practices at 101 Manning Drive, Chapel Hill, NC 27514. Dr. Gainey also practices at 2051 Marengo St, Los Angeles, CA 90033. Dr. Gainey's primary practice is UNC Hospitals in Chapel Hill, North Carolina, part of University of North Carolina Health Care System.
What is Dr. Christina Sun Gainey's office phone number?
The practice phone on file for Dr. Gainey is (919) 966-4141.
What is Dr. Christina Sun Gainey's medical license number?
Dr. Gainey holds North Carolina license 2021-01712, one of the licenses on file in 2 states.
Which states has Dr. Christina Sun Gainey been licensed in?
Dmand AI has state licenses on file for Dr. Gainey in North Carolina and California.
Which hospitals is Dr. Christina Sun Gainey affiliated with?
Dr. Gainey practices at UNC Hospitals in Chapel Hill, North Carolina.
What medical group is Dr. Christina Sun Gainey part of?
Dr. Gainey is linked to UNC Faculty Physicians.
Does Dr. Christina Sun Gainey accept Medicare?
Yes. CMS lists Dr. Gainey as accepting Medicare assignment.
What drugs does Dr. Christina Sun Gainey prescribe most?
In 2021 Medicare Part D data, Dr. Gainey's most prescribed drugs by claims were Atorvastatin Calcium.
Has Dr. Christina Sun Gainey received payments from drug or device companies?
CMS Open Payments shows $340 in general payments to Dr. Gainey from 4 companies from 2021 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Christina Sun Gainey been practicing?
Dr. Gainey graduated from medical school in 2018, 8 years ago.
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