NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1699893545 MD
Verify on CMS → Ronald Slocumb, MD
Ophthalmology Physician in Norwich, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,388 in 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
992
Medicare Part D claims · 262 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Ronald Slocumb, MD reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 992 Medicare Part D claims in 2024.
- 100/100
- MIPS score · +17 vs avg
- 992
- Part D claims, 2024
- 77%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Ronald Slocumb, MD
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 1699893545), first enumerated 03/27/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 992 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.
- 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 1699893545 · Ophthalmology Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1699893545
- ENUM-MID 2007
- TAX-MID 22K Ophthalmology Physician
- MIPS-ELITE 100/100
- RX-LIGHT 992
- BOOK-THIN 347 in Connecticut
- PHOTO-FINISH Michael Albert, MD · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Slocumb · this p…
Slocumb · this provider
100 MIPS pts
- Susan Blair, M.D…
Susan Blair, M.D.
100 MIPS pts
- Michael Albert, …
Michael Albert, MD
100 MIPS pts
- Tracy Baltz, MD …
Tracy Baltz, MD
100 MIPS pts
- Mark Barakat, M.…
Mark Barakat, M.D.
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Ronald Slocumb, MD'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 Ronald Slocumb, MD sits
This provider among ophthalmology physician peers
Across the 8,767 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Ronald Slocumb, MD writes more Part D claims than 46% of them and scores higher on MIPS quality than 84% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one ophthalmology physician peer from a representative sample of 60; the gold marker is Ronald Slocumb, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ronald Slocumb, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Ronald Slocumb, MD?
High performer (top quartile)Primary specialty
Ophthalmology Physician
Medicare Part D claims
992 33% vs specialty avg
MIPS final score
100/100 16.5 pts vs avg
Specialty distribution in Connecticut
How Ophthalmology Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Ronald Slocumb, MD's 2023 MIPS final score plotted against the 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 | 1699893545 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/27/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Measured-score avg: 83.5
100
Quality
93.222
Cost
Reporting: Group practice
Brand vs generic prescribing mix · Typical
Ronald Slocumb, MD - brand share 23.0%
Ophthalmology Physician average
23% brand-name claims vs 77% generic, on 992 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.
992
Total Claims
$123K
Total Drug Cost
262
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,198.4
- Total Day Supply
- 65,038
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $97K
- Generic Drug Cost
- $26K
Patient Demographics
- Average Patient Age
- 74.9 years
- Avg HCC Risk Score
- 1.20
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 19, 65-74: 104, 75-84: 107, 85+: 32
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ronald Slocumb, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
317 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
279 claims
- Timolol Maleate 60
Timolol Maleate
60 claims
- Brimonidine Tartrate 54
Brimonidine Tartrate
54 claims
- Simbrinza 45
Simbrinza
45 claims
- Dorzolamide Hcl 36
Dorzolamide Hcl
36 claims
- Lumigan 36
Lumigan
36 claims
- Prednisolone Acetate 23
Prednisolone Acetate
23 claims
| Drug | Claims |
|---|---|
| Latanoprost | 317 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 279 |
| Timolol Maleate | 60 |
| Brimonidine Tartrate | 54 |
| Simbrinza Brinzolamide/Brimonidine Tart | 45 |
| Dorzolamide Hcl | 36 |
| Lumigan Bimatoprost | 36 |
| Prednisolone Acetate | 23 |
| Brimonidine Tartrate-Timolol Brimonidine Tartrate/Timolol | 21 |
| Travoprost | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Ronald Slocumb, MD fits within the Ophthalmology Physician landscape nationally.
22,388
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,490
Avg Claims per Provider
Ronald Slocumb, MD's 992 claims are below the specialty average of 1,490.
Nationwide Ophthalmology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Slocumb, both outside Connecticut 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 (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Ophthalmology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Slocumb.
One of 347 Ophthalmology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Marcio Abreu
M.D.
Bridgeport, CT
Dr. Bruce Altman
M.D.
Danbury, CT
Dr. Laura Andrews
MD
Waterbury, CT
Shimy Apoorva
Waterbury, CT
Dr. Yehuda Assouline
M.D.
Danbury, CT
Compare Ophthalmology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ronald Slocumb, MD's specialty? ▼
Ronald Slocumb, MD specializes in Ophthalmology Physician and practices in Norwich, Connecticut. Credentials: MD.
How much does Ronald Slocumb, MD prescribe under Medicare Part D? ▼
In 2024, Ronald Slocumb, MD wrote 992 Medicare Part D claims totaling $123K in drug costs for 262 beneficiaries.
What is Ronald Slocumb, MD's Medicare quality score? ▼
Ronald Slocumb, MD has a CMS MIPS Final Score of 100/100 (Quality: 100, Cost: 93.2). 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 Ronald Slocumb, MD located? ▼
Ronald Slocumb, MD is located at 79 WAWECUS ST, Norwich, CT, 06360. Phone: (860) 886-0161.
What is Ronald Slocumb, MD's NPI number? ▼
Ronald Slocumb, MD's National Provider Identifier (NPI) is 1699893545, issued on 03/27/2007.
Does Ronald Slocumb, MD prescribe more brand-name or generic drugs? ▼
Ronald Slocumb, MD's prescribing is 23% brand-name and 77% generic drugs by claim count, with $97K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,388 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,490 Medicare Part D claims per year.
What drugs does Ronald Slocumb, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Ronald Slocumb, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ronald Slocumb, MD accept Medicare? ▼
Ronald Slocumb, MD appears in CMS Medicare data with 992 Part D claims and 262 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ronald Slocumb, MD's credentials? ▼
Ronald Slocumb, MD's NPI is 1699893545 with credentials MD. 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.