Dr. David O. Ranz, MD
- Medicare services, 2024
- 1,283
- Medicare patients, 2024
- 605
- Part D claims, 2024
- 1,106
- Industry payments
- $1,001
- Affiliated sites
- 1
- Practice address
- 3841 Green Hills Village Dr, Nashville, TN 37215
- Practice phone
- Call (615) 936-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Vanderbilt Medical Group
Nashville, Tennessee
Find Dr. Ranz's professional email, personal email and mobile number
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Dr. David O. Ranz is an ophthalmologist in Nashville, Tennessee
Dr. Ranz practices at Vanderbilt Medical Group in Nashville, Tennessee.
Dr. Ranz's NPI, 1780689141, was assigned on June 14, 2005. Dr. Ranz graduated from Rush Medical College of Rush University in 1978. Dr. Ranz holds Tennessee license 17027.
- NPI
- 1780689141NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103893060
- NPI enumeration date
- June 14, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (615) 936-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David O. Ranz practices at Vanderbilt Medical Group in Nashville, Tennessee
Dr. Ranz's primary practice is Vanderbilt Medical Group, at 3841 Green Hills Village Dr, Nashville, TN 37215 in Davidson County. The practice phone is (615) 936-2000.
- Vanderbilt Medical Group3841 Green Hills Village Dr, Nashville, TN 37215 · Davidson CountyPhone(615) 936-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David O. Ranz is affiliated with 2 sites of care and 1 medical group
Dr. Ranz's primary practice is Vanderbilt Medical Group in Nashville, Tennessee. The medical group on file is Vanderbilt University Medical Center. Dmand AI also links Dr. Ranz to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David O. Ranz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ranz practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vanderbilt Medical Group | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David O. Ranz is one of 310 ophthalmologists in Tennessee
Ophthalmology is Dr. Ranz's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Ranz is licensed in Tennessee.
Specialties and state licenses
- Ophthalmology, TennesseePrimary
Ophthalmologists near Dr. Ranz
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. David O. Ranz billed Medicare for 1,283 services in 2024
CMS data shows 1,283 Medicare services from Dr. Ranz across 12 procedure codes in 2024, for 605 Medicare patients. Medicare paid $104,416 for them.
Dr. Ranz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5792024: 6085%
- Tests and treatments
- 2023: 7202024: 58319%
- Surgery
- 2023: 1252024: 9226%
Where Dr. Ranz's Medicare services took place, 2024
- In an office1,23096%
- In a facility534%
Dr. Ranz compared with the Tennessee median for ophthalmologists, 2024
- Dr. Ranz
- Tennessee median
- Medicare services
- 1,283vs 1,58419% below
- Medicare patients
- 605vs 636Close to median
- Part D claims
- 1,004vs 63359% above
Medians across 333 ophthalmologists in Tennessee with Dmand AI profiles that report each measure.
Dr. Ranz's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ranz and other ophthalmologists in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David O. Ranz treated 605 Medicare patients in 2024, average age 77
CMS counts 605 Medicare patients who saw Dr. Ranz in 2024. The largest group is 75 to 84, with 266 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 2% are also on Medicaid. Their average risk score is 0.99, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ranz's median patient age at 70, with 58% women.
Dr. Ranz's Medicare patients by age, 2024
Dr. Ranz's Medicare patients by sex, 2024
- Women39966%
- Men20634%
Chronic conditions among Dr. Ranz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Diabetes32%
- Chronic kidney disease25%
- Ischemic heart disease25%
- Anxiety21%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ranz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David O. Ranz wrote 1,106 Medicare Part D claims in 2024
In 2024, Dr. Ranz wrote 1,106 Medicare Part D claims for 274 patients. 63% of them were for generic drugs. CMS names the drug for 1,004 of them, across 19 drugs with 11 or more claims each, at $118,307 in total drug cost. In 2023, CMS named 895 claims across 18 drugs.
Dr. Ranz's Part D claims by kind of drug, 2024
- Generic692 claims63%
- Brand-name414 claims37%
Dr. Ranz's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ranz's Part D claims, 2024
- Antibiotics2%24 of 1,106 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8952024: 1,00412%
Drugs named by CMS: 19 in 2024, 18 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David O. Ranz ranks in the 77th percentile for cataract surgery in Medicare
Dr. Ranz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 122 procedures of cataract surgery by Dr. Ranz, more than 77% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Ranz ranks in Medicare procedure volume
- Cataract surgery
- 77th percentile122 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David O. Ranz received $1,001 in industry payments from 2016 to 2021
CMS Open Payments shows 43 general payments to Dr. Ranz from 11 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 90% of the total. Alcon Laboratories Inc paid the most, $331.
General payments to Dr. Ranz by program year, 2016 to 2021
General payments to Dr. Ranz by kind, 2016 to 2021
- Food and beverage$90590%
- Education$9610%
Companies that paid Dr. Ranz the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David O. Ranz graduated from Rush Medical College of Rush University
Dr. Ranz graduated from Rush Medical College of Rush University in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David O. Ranz's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. David O. Ranz
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. David O. Ranz's NPI number?
Dr. David O. Ranz's NPI number is 1780689141. It was assigned on June 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. David O. Ranz?
Dr. David O. Ranz is an ophthalmologist in Nashville, Tennessee. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. David O. Ranz practice?
Dr. Ranz practices at 3841 Green Hills Village Dr, Nashville, TN 37215. Dr. Ranz's primary practice is Vanderbilt Medical Group in Nashville, Tennessee. Dmand AI also links Dr. Ranz to 1 group practice or clinic.
What is Dr. David O. Ranz's office phone number?
The practice phone on file for Dr. Ranz is (615) 936-2000.
What is Dr. David O. Ranz's medical license number?
Dr. Ranz holds Tennessee license 17027.
What medical group is Dr. David O. Ranz part of?
Dr. Ranz is linked to Vanderbilt University Medical Center.
Does Dr. David O. Ranz accept Medicare?
Yes. CMS data shows Dr. Ranz billed Medicare for 1,283 services in 2024, and Dr. Ranz accepts Medicare assignment.
How many Medicare patients does Dr. David O. Ranz see?
CMS counts 605 Medicare patients who saw Dr. Ranz in 2024, with an average age of 77.
What services does Dr. David O. Ranz bill to Medicare?
In 2024, Dr. Ranz's most billed Medicare services were office visit, established patient (99214), eye exam or test (92014) and eye exam or test (92134).
Where did Dr. David O. Ranz go to medical school?
Dr. Ranz graduated from Rush Medical College of Rush University in 1978.
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What drugs does Dr. David O. Ranz prescribe most?
In 2024 Medicare Part D data, Dr. Ranz's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Timolol Maleate.
Has Dr. David O. Ranz received payments from drug or device companies?
CMS Open Payments shows $1,001 in general payments to Dr. Ranz from 11 companies from 2016 to 2021. The largest total came from Alcon Laboratories Inc.
How long has Dr. David O. Ranz been practicing?
Dr. Ranz graduated from medical school in 1978, 48 years ago.
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