NPI registry status
Active
2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1942732391 MD
Verify on CMS → Alexander Snyder, MD
Cornea and External Diseases Specialist Physician in Raleigh, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 294 in Cornea and External Diseases Specialist 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
2K
Medicare Part D claims · 542 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.5K
51 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Alexander Snyder, MD filed 1,702 Medicare Part D claims in 2023 as a Cornea and External Diseases Specialist Physician in Raleigh, North Carolina, prescribing 52% generic.
- 2K
- Part D claims, 2023
- 52%
- 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.
Alexander Snyder, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,702 Top 17% higher than 83% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Alexander Snyder, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Alexander Snyder, MD?
Quality data not reportedPrimary specialty
Cornea and External Diseases Specialist Physician
Medicare Part D claims
1,702 38% vs specialty avg
Specialty distribution in North Carolina
How Cornea and External Diseases Specialist Physician compares to other specialties among North Carolina providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Cornea and External Diseases Specialist Physician. Verify directly:
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).
Alexander Snyder, MD appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding MD credentials at 3320 EXECUTIVE DR STE 111, Raleigh, NC, 27609, with a listed phone of (919) 876-2427. NPI 1942732391 was issued on 04/03/2017.
Medicare Part D records for calendar year 2023 show 1,702 prescription claims written by this provider, covering 542 Medicare beneficiaries and totaling roughly $372K in drug spend, split 48% brand-name and 52% generic by claim count, with an opioid prescribing rate of 0.8%.
Cornea and External Diseases Specialist Physician is a narrow specialty nationwide, with 294 enrolled providers across 43 states and an average of 1,232 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1942732391 |
|---|---|
| Specialty | Cornea and External Diseases Specialist Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/03/2017 |
Hospital and facility affiliations
Facilities where Alexander Snyder, MD 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.
Raleigh Eye Center, P.A.
Raleigh, NC
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 Alexander Snyder, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
BIOTISSUE HOLDINGS INC.
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.
Brand vs generic prescribing mix · Above average
Alexander Snyder, MD - brand share 48.0%
Cornea and External Diseases Specialist Physician average
48% brand-name claims vs 52% generic, on 1,702 2023 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 2023.
1,702
Total Claims
$372K
Total Drug Cost
542
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,358
- Total Day Supply
- 60,901
- Brand vs Generic
- 48% brand / 52% generic
- Brand Drug Cost
- $334K
- Generic Drug Cost
- $37K
- Opioid Claims
- 14 (0.8% rate)
- Antibiotic Claims
- 67
Patient Demographics
- Average Patient Age
- 72.4 years
- Avg HCC Risk Score
- 1.48
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 84, 65-74: 207, 75-84: 194, 85+: 57
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alexander Snyder, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisolone Acetate
Prednisolone Acetate
542 claims
- Ofloxacin 160
Ofloxacin
160 claims
- Erythromycin 86
Erythromycin
86 claims
- Ketorolac Trometha… 78
Ketorolac Tromethamine
78 claims
- Restasis 59
Restasis
59 claims
- Fluorometholone 55
Fluorometholone
55 claims
- Moxifloxacin 47
Moxifloxacin
47 claims
- Dorzolamide-Timolol 45
Dorzolamide-Timolol
45 claims
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 542 |
| Ofloxacin | 160 |
| Erythromycin Erythromycin Base | 86 |
| Ketorolac Tromethamine | 78 |
| Restasis Cyclosporine | 59 |
| Fluorometholone | 55 |
| Moxifloxacin Moxifloxacin Hcl | 47 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 45 |
| Latanoprost | 45 |
| Doxycycline Hyclate | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Cornea and External Diseases Specialist Physician in NC →
All providers in North Carolina →
Compare specialties →
Cornea and External Diseases Specialist Physician Overview
How Alexander Snyder, MD fits within the Cornea and External Diseases Specialist Physician landscape nationally.
294
Cornea and External Diseases Specialist Physician Providers in US
43
States with Cornea and External Diseases Specialist Physician
1,232
Avg Claims per Provider
Alexander Snyder, MD's 1,702 claims are above the specialty average of 1,232.
Nearby Cornea and External Diseases Specialist Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Snyder.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cornea and External Diseases Specialist Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Alexander Snyder, MD's specialty? ▼
Alexander Snyder, MD specializes in Cornea and External Diseases Specialist Physician and practices in Raleigh, North Carolina. Credentials: MD.
How much does Alexander Snyder, MD prescribe under Medicare Part D? ▼
In 2023, Alexander Snyder, MD wrote 1,702 Medicare Part D claims totaling $372K in drug costs for 542 beneficiaries.
Where is Alexander Snyder, MD located? ▼
Alexander Snyder, MD is located at 3320 EXECUTIVE DR STE 111, Raleigh, NC, 27609. Phone: (919) 876-2427.
What is Alexander Snyder, MD's NPI number? ▼
Alexander Snyder, MD's National Provider Identifier (NPI) is 1942732391, issued on 04/03/2017.
Does Alexander Snyder, MD prescribe more brand-name or generic drugs? ▼
Alexander Snyder, MD's prescribing is 48% brand-name and 52% generic drugs by claim count, with $334K in brand drug costs.
Does Alexander Snyder, MD prescribe opioids? ▼
Yes, Alexander Snyder, MD had 14 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Cornea and External Diseases Specialist Physician providers are there in the US? ▼
There are 294 Cornea and External Diseases Specialist Physician providers across 43 states in the US. The average Cornea and External Diseases Specialist Physician provider writes 1,232 Medicare Part D claims per year.
What drugs does Alexander Snyder, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Alexander Snyder, MD's most frequently prescribed drugs include Prednisolone Acetate, Ofloxacin, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alexander Snyder, MD accept Medicare? ▼
Alexander Snyder, MD appears in CMS Medicare data with 1,702 Part D claims and 542 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexander Snyder, MD's credentials? ▼
Alexander Snyder, MD's NPI is 1942732391 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.