NPI registry status
Active
2026 NPPES data Glaucoma Specialist (Ophthalmology) Physician NPI 1205153939 M.D., PH.D.
Verify on CMS → Ken Lin, M.D., PH.D.
Glaucoma Specialist (Ophthalmology) Physician in Irvine, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 383 in Glaucoma Specialist (Ophthalmology) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 566 beneficiaries · Glaucoma Specialist (Ophthalmology) Physician avg: 3K
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Industry payments
$6.0K
4 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Ken Lin, M.D., PH.D. reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 3,211 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 3K
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥92nd
- pct among measured MIPS (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Ken Lin, M.D., PH.D.
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1205153939), first enumerated 04/20/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 3,211 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$6.0K in reported industry payments (4 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Ken Lin, M.D., PH.D.'s individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1205153939 · Glaucoma Specialist (Ophthalmology) Physician
NPI-10 · ENUM-MID · TAX-TRACE · MIPS-ELITE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1205153939
- ENUM-MID 2010
- TAX-TRACE 383
- MIPS-ELITE 100/100
- RX-MID 3,211
- BOOK-THIN 60 in California
- PHOTO-FINISH George Cioffi, MD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Lin · this provi…
Lin · this provider
100 MIPS pts
- Omolola Idowu, M…
Omolola Idowu, MD
100 MIPS pts
- George Cioffi, M…
George Cioffi, MD
100 MIPS pts
- Pujan Dave, MD ·…
Pujan Dave, MD
100 MIPS pts
- Elham Ghahari · …
Elham Ghahari
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Ken Lin, M.D., PH.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
100 ≥ 92nd percentile 92% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Ken Lin, M.D., PH.D. sits
This provider among glaucoma specialist (ophthalmology) physician peers
Across the 195 glaucoma specialist (ophthalmology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ken Lin, M.D., PH.D. writes more Part D claims than 55% of them and scores higher on MIPS quality than 87% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one glaucoma specialist (ophthalmology) physician peer from a representative sample of 60; the gold marker is Ken Lin, M.D., PH.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ken Lin, M.D., PH.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Ken Lin, M.D., PH.D.?
High performer (top quartile)Primary specialty
Glaucoma Specialist (Ophthalmology) Physician
Medicare Part D claims
3,211 6% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in California
How Glaucoma Specialist (Ophthalmology) Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Ken Lin, M.D., PH.D.'s 2023 MIPS final score plotted against the Glaucoma Specialist (Ophthalmology) Physician national average
- MIPS Final Score
- 100/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1205153939 |
|---|---|
| Specialty | Glaucoma Specialist (Ophthalmology) Physician |
| Credentials | M.D., PH.D. |
| Gender | Male |
| NPI Issued | 04/20/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
82.4039
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Ken Lin, M.D., PH.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Regents OF The University OF California
Orange, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Ken Lin, M.D., PH.D.. Source: openpaymentsdata.cms.gov.
Total received
$6.0K
Largest payer
Alcon Research LLC
Most common payment type
Consulting Fee
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Ken Lin, M.D., PH.D.. To verify Ken Lin, M.D., PH.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
3,211
Total Claims
$413K
Total Drug Cost
566
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,389.267
- Total Day Supply
- 186,222
- Generic Drug Cost
- $92K
Patient Demographics
- Average Patient Age
- 77.1 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 19, 65-74: 208, 75-84: 223, 85+: 116
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ken Lin, M.D., PH.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
988 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
529 claims
- Brimonidine Tartrate 382
Brimonidine Tartrate
382 claims
- Timolol Maleate 147
Timolol Maleate
147 claims
- Lumigan 122
Lumigan
122 claims
- Rhopressa 116
Rhopressa
116 claims
- Dorzolamide Hcl 102
Dorzolamide Hcl
102 claims
- Alphagan P 93
Alphagan P
93 claims
| Drug | Claims |
|---|---|
| Latanoprost | 988 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 529 |
| Brimonidine Tartrate | 382 |
| Timolol Maleate | 147 |
| Lumigan Bimatoprost | 122 |
| Rhopressa Netarsudil Mesylate | 116 |
| Dorzolamide Hcl | 102 |
| Alphagan P Brimonidine Tartrate | 93 |
| Travoprost | 76 |
| Vyzulta Latanoprostene Bunod | 72 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Glaucoma Specialist (Ophthalmology) Physician in CA →
All providers in California →
Compare specialties →
Glaucoma Specialist (Ophthalmology) Physician Overview
How Ken Lin, M.D., PH.D. fits within the Glaucoma Specialist (Ophthalmology) Physician landscape nationally.
383
Glaucoma Specialist (Ophthalmology) Physician Providers in US
42
States with Glaucoma Specialist (Ophthalmology) Physician
3,029
Avg Claims per Provider
Ken Lin, M.D., PH.D.'s 3,211 claims are above the specialty average of 3,029.
Nationwide Glaucoma Specialist (Ophthalmology) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lin, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (100 here).
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Glaucoma Specialist (Ophthalmology) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lin.
One of 60 Glaucoma Specialist (Ophthalmology) Physician providers enrolled in California, 5 are shown here.
Dr. Reza Alizadeh
M.D.
Santa Monica, CA
Dr. Ardalan Aminlari
MD
Encinitas, CA
Dr. Thomas Avallone
M.D.
Coronado, CA
Dr. Felise May Barte
MD
Santa Clara, CA
Dr. Sahar Bedrood
MD,PHD
Pasadena, CA
Compare Glaucoma Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ken Lin, M.D., PH.D.'s specialty? ▼
Ken Lin, M.D., PH.D. specializes in Glaucoma Specialist (Ophthalmology) Physician and practices in Irvine, California. Credentials: M.D., PH.D..
How much does Ken Lin, M.D., PH.D. prescribe under Medicare Part D? ▼
In 2024, Ken Lin, M.D., PH.D. wrote 3,211 Medicare Part D claims totaling $413K in drug costs for 566 beneficiaries.
What is Ken Lin, M.D., PH.D.'s Medicare quality score? ▼
Ken Lin, M.D., PH.D. has a CMS MIPS Final Score of 100/100 (Quality: 82.4). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Ken Lin, M.D., PH.D. located? ▼
Ken Lin, M.D., PH.D. is located at 850 HEALTH SCIENCES RD, Irvine, CA, 92617. Phone: (949) 824-2020.
What is Ken Lin, M.D., PH.D.'s NPI number? ▼
Ken Lin, M.D., PH.D.'s National Provider Identifier (NPI) is 1205153939, issued on 04/20/2010.
How many Glaucoma Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 383 Glaucoma Specialist (Ophthalmology) Physician providers across 42 states in the US. The average Glaucoma Specialist (Ophthalmology) Physician provider writes 3,029 Medicare Part D claims per year.
What drugs does Ken Lin, M.D., PH.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Ken Lin, M.D., PH.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ken Lin, M.D., PH.D. accept Medicare? ▼
Ken Lin, M.D., PH.D. appears in CMS Medicare data with 3,211 Part D claims and 566 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ken Lin, M.D., PH.D.'s credentials? ▼
Ken Lin, M.D., PH.D.'s NPI is 1205153939 with credentials M.D., PH.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
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 August 2026.