Colin Ip, MD
Cornea and External Diseases Specialist Physician · Chula Vista, CA
Colin Ip, MD is a cornea and external diseases specialist physician with a practice address in Chula Vista, California, and NPI 1295266815, issued on Mar 24, 2017. Check the license (California A175936, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Colin Ip
- Credential
- MD
- Primary taxonomy
- Cornea and External Diseases Specialist Physician 207WX0120X
- License number
- A175936 CA
Self-reported in NPPES; status is on the state search - Practice location
- 835 Third Ave Ste A, Chula Vista, CA 91911
- Phone
- (619) 378-3202
- Enumerated
- Mar 24, 2017
- Entity
- Type 1 · individual
Also registered at 835 Third Ave Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sara Khandan, MDInternal Medicine Physician1063850808
- Emma McDonnellOphthalmology Physician1023357670
- Gordon Montgomery, M.D.Specialist1144226234
Verify Colin Ip in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A175936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.4 times the Medicare Part D claims of the average cornea and external diseases specialist physician in 2024
3,100 Medicare Part D claims for 647 beneficiaries, against an average of 1,306 among the 282 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Prednisolone Acetate711 claims
- Ofloxacin360 claims
- Latanoprost268 claims
- Erythromycin256 claims
- Moxifloxacin196 claims
- Brimonidine Tartrate181 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 practice group's Medicare quality score for 2023: 86.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,684.38
47 payments, mostly food and beverage; the largest payer was Alcon Vision LLC. The 247 providers of this specialty with any payment received $3,865.64 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.
One hospital or facility affiliation
- California Retina Associates, LPChula Vista, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Cornea and External Diseases Specialist Physician providers in California
There are 46 cornea and external diseases specialist physician records in California.
Other cornea and external diseases specialist physician records in California
- Rakhi Ammar, MDLa Jolla, CA1285138503
- Patricia Bainter, MDLa Jolla, CA1487737847
- Brandon Bates, MDOrange, CA1376288274
- Carla BerkowitzSan Diego, CA1578928669
- Clemence Bonnet, MD, PHDLos Angeles, CA1861256547
- Shyamanga Borooah, MDSan Diego, CA1275165102
- Clement Cheng, MDStanford, CA1629065826
- Daniel Choi, MDWest Hills, CA1679078216
- Joanne Choi, MDSan Francisco, CA1063041838
- Michael Choi, M.D.Buena Park, CA1871912279
Common questions
What is Colin Ip, MD's NPI number?
Colin Ip, MD's National Provider Identifier (NPI) is 1295266815, issued on Mar 24, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Colin Ip, MD located?
The NPPES record lists a practice address at 835 Third Ave Ste A, Chula Vista, CA, 91911. Phone: (619) 378-3202. Providers update this record themselves, so call before visiting.
How can I verify Colin Ip, MD's license?
NPPES lists California license number A175936, 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 Colin Ip, MD prescribe under Medicare Part D?
In 2024, Colin Ip, MD had 3,100 Medicare Part D claims for 647 beneficiaries; the average among cornea and external diseases specialist physician prescribers was 1,306. Part D covers Medicare prescriptions only.
What is Colin Ip, MD's Medicare quality score?
The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.