Michael Shun Nun Ip, MD
Ophthalmology Physician · Pasadena, CA
Michael Shun Nun Ip, MD is an ophthalmology physician with a practice address in Pasadena, California, and NPI 1982670402, issued on Feb 24, 2006. Check the license (California G141944, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Shun Nun Ip
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G141944 CA
Self-reported in NPPES; status is on the state search - Practice location
- 625 S Fair Oaks Ave Ste 280, Pasadena, CA 91105
- Phone
- (626) 817-4747
- Enumerated
- Feb 24, 2006
- Record last updated
- Jan 23, 2025
- Fax
- (626) 817-4748
- Medicare enrollment
- Enrolled (PECOS I20160526002213); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 625 S Fair Oaks Ave Ste 280
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alice Kim, MDFamily Medicine Physician1306580097
- David Macpherson, M.D.Ophthalmology Physician1396276861
Verify Michael Shun Nun Ip in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G141944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average ophthalmology physician in 2024
139 Medicare Part D claims for 44 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Ketorolac Tromethamine24 claims
- Prednisolone Acetate21 claims
- Timolol Maleate18 claims
- Latanoprost13 claims
- Atropine Sulfate11 claims
- Brimonidine Tartrate11 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 MIPS final score for 2023 (Medicare payment program): 74.6 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: $32,935.78
54 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Pharmaceuticals, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 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
- Jules Stein Eye Institute Medical GroupPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Shun Nun Ip among 2,899 ophthalmology physician records in California
Michael Shun Nun Ip, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1993 · median 2001 among the 1,907 with a school on file
- Record last updated2025 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Pasadena → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Rizwan Bhatti, M.D.Pasadena, CA 911051588724108
- Gerald Bowns, MDPasadena, CA 911051225000672
- Joseph Davidson, M.D.Pasadena, CA 911051467487926
- Jeffrey Hong, MDPasadena, CA 911051922049055
- Hugo Hsu, MDPasadena, CA 911051336153816
- John Irvine, M.D.Pasadena, CA 911051316009103
- Marta Mora, M.D.Pasadena, CA 911051093766651
- Srinivas Sadda, MDPasadena, CA 911051477614790
Common questions
What is Michael Shun Nun Ip, MD's NPI number?
Michael Shun Nun Ip, MD's National Provider Identifier (NPI) is 1982670402, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Shun Nun Ip, MD located?
The NPPES record lists a practice address at 625 S Fair Oaks Ave Ste 280, Pasadena, CA, 91105. Phone: (626) 817-4747. Providers update this record themselves, so call before visiting.
How can I verify Michael Shun Nun Ip, MD's license?
NPPES lists California license number G141944, 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 Michael Shun Nun Ip, MD prescribe under Medicare Part D?
In 2024, Michael Shun Nun Ip, MD had 139 Medicare Part D claims for 44 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Michael Shun Nun Ip, MD's MIPS final score?
The 2023 MIPS final score is 74.6 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), 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.