Christina Ling, M.D.
Gastroenterology Physician · Orange, CA
Christina Ling, M.D. is a gastroenterology physician with a practice address in Orange, California, and NPI 1093133183, issued on Apr 4, 2014. Check the license (California A140400, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christina Ling
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- A140400 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Dr S Bldg 22C, Orange, CA 92868
- Phone
- (888) 717-4463
- Enumerated
- Apr 4, 2014
- Record last updated
- Mar 7, 2023
- Medicaid ID
- CL3232267556 CA
- Medicare enrollment
- Enrolled (PECOS I20200723002926); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 101 The City Dr S Bldg 22C
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frances Dang, MDGastroenterology Physician1225892219
- Marcelo Hinojosa, MDSurgery Physician1861673998
- Amber Isenhart, MS, RDRegistered Dietitian1023401288
- Avni Jain, MD, FRCPCGastroenterology Physician1629837455
- William Karnes, MDGastroenterology Physician1881652998
- Joshua KwonGastroenterology Physician1053870121
Verify Christina Ling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A140400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average gastroenterology physician in 2024
500 Medicare Part D claims for 192 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Omeprazole81 claims
- Peg 3350-Electrolyte77 claims
- Sod Sulf-Potass Sulf-Mag Sulf52 claims
- Zenpep47 claims
- Creon36 claims
- Colesevelam Hcl21 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.
The MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $71.02
2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- UC RegentsOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christina Ling among 2,140 gastroenterology physician records in California
Christina Ling, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 83% of them.
- NPI issued2014 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2014 · median 2002 among the 1,538 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Orange → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Alaa Abousaif, MDOrange, CA 928681235124108
- William Collins, MDOrange, CA 928681104892074
- Jessica Hung, M.D.Orange, CA 928681396786323
- William Karnes, MDOrange, CA 928681881652998
- James Lee, MDOrange, CA 928681750358735
- Robert Lee, M.D.Orange, CA 928681669583530
- John Lee, MDOrange, CA 928681487734521
- William Metzger, MDOrange, CA 928681629040308
Common questions
What is Christina Ling, M.D.'s NPI number?
Christina Ling, M.D.'s National Provider Identifier (NPI) is 1093133183, issued on Apr 4, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Christina Ling, M.D. located?
The NPPES record lists a practice address at 101 The City Dr S Bldg 22C, Orange, CA, 92868. Phone: (888) 717-4463. Providers update this record themselves, so call before visiting.
How can I verify Christina Ling, M.D.'s license?
NPPES lists California license number A140400, 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 Christina Ling, M.D. prescribe under Medicare Part D?
In 2024, Christina Ling, M.D. had 500 Medicare Part D claims for 192 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Christina Ling, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.