NPI registry status
Active
2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1003809641 M.D.
Verify on CMS → Robert Davidson, M.D.
Cornea and External Diseases Specialist Physician in Chandler, Arizona.
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
1K
Medicare Part D claims · 363 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.9/100
▲ 9 pts above national avg 83.1 · Exceptional
Industry payments
$780.56
9 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
Robert Davidson, M.D. reported a CMS MIPS final score of 91.9/100 - above the 83.1 national average - and filed 1,484 Medicare Part D claims in 2023.
- 91.9/100
- MIPS score · +9 vs avg
- 1K
- Part D claims, 2023
- 47%
- 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.
Robert Davidson, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
92 Top 37% higher than 63% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Robert Davidson, M.D. sits
This provider among cornea and external diseases specialist physician peers
Across the 165 cornea and external diseases specialist physician providers who report both Medicare Part D prescribing and a MIPS quality score, Robert Davidson, M.D. writes more Part D claims than 62% of them and scores higher on MIPS quality than 67% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one cornea and external diseases specialist physician peer from a representative sample of 60; the gold marker is Robert Davidson, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Robert Davidson, M.D. 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 Robert Davidson, M.D.?
High performer (top quartile)Primary specialty
Cornea and External Diseases Specialist Physician
Medicare Part D claims
1,484 20% vs specialty avg
MIPS final score
91.9/100 8.8 pts vs avg
Specialty distribution in Arizona
How Cornea and External Diseases Specialist Physician compares to other specialties among Arizona providers
Medicare quality performance, MIPS
Robert Davidson, M.D.'s 2023 MIPS final score plotted against the Cornea and External Diseases Specialist Physician national average
- MIPS Final Score
- 91.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Cornea and External Diseases Specialist Physician) - 91.9/100 vs national avg 83.1
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).
Robert Davidson, M.D. appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding M.D. credentials at 1727 W FRYE RD STE 220, Chandler, AZ, 85224, with a listed phone of (480) 821-1800. NPI 1003809641 was issued on 08/30/2005.
Medicare Part D records for calendar year 2023 show 1,484 prescription claims written by this provider, covering 363 Medicare beneficiaries and totaling roughly $262K in drug spend, split 53% brand-name and 47% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.9/100 for the 2023 performance year (Quality 100, Cost 73), compared with the national average of 83.1.
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 | 1003809641 |
|---|---|
| Specialty | Cornea and External Diseases Specialist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/30/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.914
Final Score
Avg: 83.1
100
Quality
73.0465
Cost
Reporting: Individual
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 Robert Davidson, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$781
Largest payer
Glaukos Corporation
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 · Brand-heavy
Robert Davidson, M.D. - brand share 53.0%
Cornea and External Diseases Specialist Physician average
53% brand-name claims vs 47% generic, on 1,484 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.
1,484
Total Claims
$262K
Total Drug Cost
363
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,427
- Total Day Supply
- 68,998
- Brand vs Generic
- 53% brand / 47% generic
- Brand Drug Cost
- $223K
- Generic Drug Cost
- $38K
Patient Demographics
- Average Patient Age
- 78.1 years
- Avg HCC Risk Score
- 1.13
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Davidson, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
357 claims
- Lumigan
Lumigan
157 claims
- Timolol Maleate 130
Timolol Maleate
130 claims
- Moxifloxacin 127
Moxifloxacin
127 claims
- Prolensa 76
Prolensa
76 claims
- Lotemax Sm 67
Lotemax Sm
67 claims
- Prednisolone Acetate 60
Prednisolone Acetate
60 claims
- Brimonidine Tartra… 56
Brimonidine Tartrate-Timolol
56 claims
| Drug | Claims |
|---|---|
| Latanoprost | 357 |
| Lumigan Bimatoprost | 157 |
| Timolol Maleate | 130 |
| Moxifloxacin Moxifloxacin Hcl | 127 |
| Prolensa Bromfenac Sodium | 76 |
| Lotemax Sm Loteprednol Etabonate | 67 |
| Prednisolone Acetate | 60 |
| Brimonidine Tartrate-Timolol Brimonidine Tartrate/Timolol | 56 |
| Ketorolac Tromethamine | 54 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 43 |
* 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 AZ →
All providers in Arizona →
Compare specialties →
Cornea and External Diseases Specialist Physician Overview
How Robert Davidson, M.D. 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
Robert Davidson, M.D.'s 1,484 claims are above the specialty average of 1,232.
Nearby Cornea and External Diseases Specialist Physician Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Davidson.
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 Arizona 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 Robert Davidson, M.D.'s specialty? ▼
Robert Davidson, M.D. specializes in Cornea and External Diseases Specialist Physician and practices in Chandler, Arizona. Credentials: M.D..
How much does Robert Davidson, M.D. prescribe under Medicare Part D? ▼
In 2023, Robert Davidson, M.D. wrote 1,484 Medicare Part D claims totaling $262K in drug costs for 363 beneficiaries.
What is Robert Davidson, M.D.'s Medicare quality score? ▼
Robert Davidson, M.D. has a CMS MIPS Final Score of 91.9/100 (Quality: 100, Cost: 73). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Robert Davidson, M.D. located? ▼
Robert Davidson, M.D. is located at 1727 W FRYE RD STE 220, Chandler, AZ, 85224. Phone: (480) 821-1800.
What is Robert Davidson, M.D.'s NPI number? ▼
Robert Davidson, M.D.'s National Provider Identifier (NPI) is 1003809641, issued on 08/30/2005.
Does Robert Davidson, M.D. prescribe more brand-name or generic drugs? ▼
Robert Davidson, M.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $223K in brand drug costs.
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 Robert Davidson, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Davidson, M.D.'s most frequently prescribed drugs include Latanoprost, Lumigan, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Davidson, M.D. accept Medicare? ▼
Robert Davidson, M.D. appears in CMS Medicare data with 1,484 Part D claims and 363 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Davidson, M.D.'s credentials? ▼
Robert Davidson, M.D.'s NPI is 1003809641 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 (2023). 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 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.