NPI registry status
Active
2026 NPPES data Specialist NPI 1114920477 M.D.
Verify on CMS → John Shin, M.D.
Specialist in San Rafael, 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 69,567 in Specialist, 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
2K
Medicare Part D claims · 545 beneficiaries · Specialist avg: 2K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
CMS neutral threshold · no category scores published
Industry payments
$84.17
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
John Shin, M.D. carries the neutral CMS MIPS final score of 75/100, assigned where no category was scored - and filed 2,079 Medicare Part D claims in 2024.
- 75/100
- CMS neutral score · not measured
- 2K
- Part D claims, 2024
- 47%
- generic prescribing
- $84.17
- industry payments (Sunshine Act)
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 John Shin, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1114920477), first enumerated 05/31/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,079 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)
CMS assigned a neutral MIPS final score of 75/100 where no performance category was scored — not a measured quality rank.
Source: CMS Quality Payment Program
- 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
$84.17 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 John Shin, M.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 1114920477 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-NEUTRAL · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1114920477
- ENUM-LEGACY 2005
- TAX-MEGA 70K Specialist
- MIPS-NEUTRAL 75/100
- RX-MID 2,079
- BOOK-MID 6,640 in California
- PHOTO-ENUM Shafi Wani, M.D. · 2005
John Shin, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
2,079 ≥ 84th percentile 84% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about John Shin, M.D.?
CMS neutral score, not measuredPrimary specialty
Specialist
Medicare Part D claims
2,079 36% vs specialty avg
MIPS final score
75/100
Specialty distribution in California
How Specialist compares to other specialties among California providers
MIPS score not measured
CMS assigned a neutral 75/100 threshold
CMS did not publish any Quality, Cost, Promoting Interoperability, or Improvement Activities category score for this clinician. This administrative threshold is not comparable with the national average of clinicians whose MIPS score was measured.
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 | 1114920477 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/31/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
CMS neutral threshold · not measured
Reporting: Group practice
Hospital and facility affiliations
Facilities where John Shin, M.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.
Marin Ophthalmic Consultants, A Medical Corporation
San Rafael, 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 John Shin, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$84
Largest payer
Alcon Vision LLC
Most common payment type
Food and Beverage
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 John Shin, M.D.. To verify John Shin, M.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.
Brand vs generic prescribing mix · Brand-heavy
John Shin, M.D. - brand share 53.0%
Specialist average
53% brand-name claims vs 47% generic, on 2,079 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
2,079
Total Claims
$266K
Total Drug Cost
545
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,147.733
- Total Day Supply
- 118,721
- Brand vs Generic
- 53% brand / 47% generic
- Brand Drug Cost
- $219K
- Generic Drug Cost
- $47K
Patient Demographics
- Average Patient Age
- 79.9 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 59% female / 41% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What John Shin, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
763 claims
- Timolol Maleate 195
Timolol Maleate
195 claims
- Dorzolamide-Timolol 156
Dorzolamide-Timolol
156 claims
- Lumigan 151
Lumigan
151 claims
- Brimonidine Tartrate 94
Brimonidine Tartrate
94 claims
- Tobramycin-Dexamet… 81
Tobramycin-Dexamethasone
81 claims
- Prednisolone Acetate 80
Prednisolone Acetate
80 claims
- Neomycin-Polymyxin… 75
Neomycin-Polymyxin-Dexameth
75 claims
| Drug | Claims |
|---|---|
| Latanoprost | 763 |
| Timolol Maleate | 195 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 156 |
| Lumigan Bimatoprost | 151 |
| Brimonidine Tartrate | 94 |
| Tobramycin-Dexamethasone Tobramycin/Dexamethasone | 81 |
| Prednisolone Acetate | 80 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 75 |
| Ofloxacin | 62 |
| Dorzolamide Hcl | 48 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How John Shin, M.D. fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
John Shin, M.D.'s 2,079 claims are above the specialty average of 1,524.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Shin, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (75 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Shin.
One of 6,640 Specialist providers enrolled in California, 5 are shown here.
Adrienne Abad Santos
San Francisco, CA
Dr. Brenda Abarca
MD
Torrance, CA
Fatemeh Abbasi
PT
Van Nuys, CA
Dr. Erlinda Abcede
M.D.
Cudahy, CA
Dr. Maher Abdallah
M.D.
Palm Springs, CA
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Shin, M.D.'s specialty? ▼
John Shin, M.D. specializes in Specialist and practices in San Rafael, California. Credentials: M.D..
How much does John Shin, M.D. prescribe under Medicare Part D? ▼
In 2024, John Shin, M.D. wrote 2,079 Medicare Part D claims totaling $266K in drug costs for 545 beneficiaries.
What is John Shin, M.D.'s Medicare quality score? ▼
John Shin, M.D. has a CMS MIPS Final Score of 75/100. CMS published no Quality, Promoting Interoperability, Improvement Activity or Cost score for this clinician, so the final score is the neutral performance threshold CMS assigns rather than a measured result. 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 John Shin, M.D. located? ▼
John Shin, M.D. is located at 901 E ST, San Rafael, CA, 94901. Phone: (415) 454-5565.
What is John Shin, M.D.'s NPI number? ▼
John Shin, M.D.'s National Provider Identifier (NPI) is 1114920477, issued on 05/31/2005.
Does John Shin, M.D. prescribe more brand-name or generic drugs? ▼
John Shin, M.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $219K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does John Shin, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, John Shin, M.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Shin, M.D. accept Medicare? ▼
John Shin, M.D. appears in CMS Medicare data with 2,079 Part D claims and 545 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Shin, M.D.'s credentials? ▼
John Shin, M.D.'s NPI is 1114920477 with credentials M.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.