NPI registry status
Active
2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1841298551 MD
Verify on CMS → Mark Grand, MD
Retina Specialist (Ophthalmology) Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 913 in Retina 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
26
Medicare Part D claims · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
54%
generic claims · 46% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Mark Grand, MD filed 26 Medicare Part D claims in 2023 as a Retina Specialist (Ophthalmology) Physician in Saint Louis, Missouri, prescribing 54% generic.
- 26
- Part D claims, 2023
- 54%
- generic prescribing
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.
Mark Grand, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
26 0th percentile higher than 0% 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
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Board-eligible specialty (heuristic, not verified)
Mark Grand, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mark Grand, MD?
Quality data not reportedPrimary specialty
Retina Specialist (Ophthalmology) Physician
Medicare Part D claims
26 95% vs specialty avg
Specialty distribution in Missouri
How Retina Specialist (Ophthalmology) Physician compares to other specialties among Missouri 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 Retina Specialist (Ophthalmology) 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).
Mark Grand, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 8820 LADUE RD STE 203, Saint Louis, MO, 63124, with a listed phone of (314) 367-1181. NPI 1841298551 was issued on 07/07/2005.
Medicare Part D records for calendar year 2023 show 26 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $13K in drug spend, split 46% brand-name and 54% generic by claim count.
Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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 | 1841298551 |
|---|---|
| Specialty | Retina Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/07/2005 |
Brand vs generic prescribing mix · Above average
Mark Grand, MD - brand share 46.0%
Retina Specialist (Ophthalmology) Physician average
46% brand-name claims vs 54% generic, on 26 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.
26
Total Claims
$13K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 69
- Total Day Supply
- 2,075
- Brand vs Generic
- 46% brand / 54% generic
- Brand Drug Cost
- $11K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 80.9 years
- Avg HCC Risk Score
- 0.78
More Retina Specialist (Ophthalmology) Physician in MO →
All providers in Missouri →
Compare specialties →
Retina Specialist (Ophthalmology) Physician Overview
How Mark Grand, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.
913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider
Mark Grand, MD's 26 claims are below the specialty average of 558.
Nearby Retina Specialist (Ophthalmology) Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Grand.
Dr. William Anderson
MD
Brentwood, MO
Dr. Waseem Ansari
M.D.
Saint Louis, MO
Dr. Barton Blackorby
MD
Brentwood, MO
Dr. Jerry Blair
M.D., PH.D.
Columbia, MO
Dr. Kevin Blinder
MD
Brentwood, MO
Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →
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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Retina Specialist (Ophthalmology) 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 Mark Grand, MD's specialty? ▼
Mark Grand, MD specializes in Retina Specialist (Ophthalmology) Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does Mark Grand, MD prescribe under Medicare Part D? ▼
In 2023, Mark Grand, MD wrote 26 Medicare Part D claims totaling $13K in drug costs for N/A beneficiaries.
Where is Mark Grand, MD located? ▼
Mark Grand, MD is located at 8820 LADUE RD STE 203, Saint Louis, MO, 63124. Phone: (314) 367-1181.
What is Mark Grand, MD's NPI number? ▼
Mark Grand, MD's National Provider Identifier (NPI) is 1841298551, issued on 07/07/2005.
Does Mark Grand, MD prescribe more brand-name or generic drugs? ▼
Mark Grand, MD's prescribing is 46% brand-name and 54% generic drugs by claim count, with $11K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
Does Mark Grand, MD accept Medicare? ▼
Mark Grand, MD appears in CMS Medicare data with 26 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Grand, MD's credentials? ▼
Mark Grand, MD's NPI is 1841298551 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.