John Myunghoon Pyun, MD
Ophthalmology Physician · Pinole, CA
John Myunghoon Pyun, MD is an ophthalmology physician with a practice address in Pinole, California, and NPI 1851822639, issued on Mar 23, 2017. Check the license (California A160887, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Myunghoon Pyun
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A160887 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1289 Pinole Valley RD, Pinole, CA 94564
- Phone
- (510) 724-1768
- Enumerated
- Mar 23, 2017
- Record last updated
- Aug 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210707001449); accepts Medicare assignment
- Medical or professional school
- State University Of Ny Upstate Medical University, 2017
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify John Myunghoon Pyun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A160887Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,074 Medicare Part D claims for 377 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims.
Most prescribed
- Latanoprost369 claims
- Timolol Maleate149 claims
- Cromolyn Sodium127 claims
- Neomycin-Polymyxin-Dexameth72 claims
- Brimonidine Tartrate63 claims
- Dorzolamide-Timolol62 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): 90.9 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: $65.15
3 payments; by number, the most common kind was food and beverage; the largest payer was Thea Pharma 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
- East Bay OphthalmologyPinole, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Myunghoon Pyun among 2,899 ophthalmology physician records in California
John Myunghoon Pyun, 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 2017, is newer than 88% of them.
- NPI issued2017 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2001 among the 1,907 with a school on file
- Record last updated2021 · 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).
5 ophthalmology physician records list a practice address in Pinole
They are 5 of the 370 NPPES records with a practice address in Pinole, and 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Pinole → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Amitabh Bharadwaj, MDPinole, CA 945641477511806
- Barry Breaux, M.D.Pinole, CA 945641083722144
- Scott Lee, M.D.Pinole, CA 945641699720946
- Paul Ryan, M.D.Pinole, CA 945641831169010
- Hilary Lerner, MDPittsburg, CA 945651538190749
- Joseph Elia, MDPleasanton, CA 945661871139808
- Yeji KimPleasanton, CA 945661699303198
- Jonathan Savell, MDPleasanton, CA 945661124027495
Common questions
What is John Myunghoon Pyun, MD's NPI number?
John Myunghoon Pyun, MD's National Provider Identifier (NPI) is 1851822639, issued on Mar 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is John Myunghoon Pyun, MD located?
The NPPES record lists a practice address at 1289 Pinole Valley RD, Pinole, CA, 94564. Phone: (510) 724-1768. Providers update this record themselves, so call before visiting.
How can I verify John Myunghoon Pyun, MD's license?
NPPES lists California license number A160887, 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 John Myunghoon Pyun, MD prescribe under Medicare Part D?
In 2024, John Myunghoon Pyun, MD had 1,074 Medicare Part D claims for 377 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John Myunghoon Pyun, MD's MIPS final score?
The 2023 MIPS final score is 90.9 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), 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.