Dr. Gregory S. Christensen, MD
- Medicare services, 2024
- 21,129
- Medicare patients, 2024
- 872
- Part D claims, 2024
- 661
- MIPS score, 2024
- 100
- Industry payments
- $3,255
- Practice address
- 1126 Grove Rd, Greenville, SC 29605
- Practice phone
- Call (864) 233-5722
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Retina Consultants of Carolina, PA
Greenville, South Carolina
Find Dr. Christensen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory S. Christensen is an ophthalmologist in Greenville, South Carolina
Dr. Christensen practices at Retina Consultants of Carolina, PA in Greenville, South Carolina.
Dr. Christensen's NPI, 1851374482, was assigned on November 29, 2005. Dr. Christensen graduated from Medical University of South Carolina College of Medicine in 1985. Dr. Christensen holds South Carolina license 17217.
- NPI
- 1851374482NPI Registry (opens in a new tab)
- NPI enumeration date
- November 29, 2005
- NPI status
- Active
- Practice phone
- (864) 233-5722
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gregory S. Christensen practices at Retina Consultants of Carolina, PA in Greenville, South Carolina
Dr. Christensen's primary practice is Retina Consultants of Carolina, PA, at 1126 Grove Rd, Greenville, SC 29605 in Greenville County. The practice phone is (864) 233-5722.
- Retina Consultants of Carolina, PA1126 Grove Rd, Greenville, SC 29605 · Greenville CountyPhone(864) 233-5722
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory S. Christensen is affiliated with 2 sites of care and 1 medical group
Dr. Christensen's primary practice is Retina Consultants of Carolina, PA in Greenville, South Carolina. Dmand AI also links Dr. Christensen to 1 group practice or clinic and 1 medical group, each 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. Gregory S. Christensen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Christensen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Retina Consultants of Carolina, PA | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory S. Christensen is one of 269 ophthalmologists in South Carolina
Ophthalmology is Dr. Christensen's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Christensen is licensed in South Carolina.
Specialties and state licenses
- Ophthalmology, South CarolinaPrimary
Ophthalmologists near Dr. Christensen
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. Gregory S. Christensen billed Medicare for 21,129 services in 2024
CMS data shows 21,129 Medicare services from Dr. Christensen across 13 procedure codes in 2024, for 872 Medicare patients. Medicare paid $1,075,287 for them. Every service was in an office.
Dr. Christensen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 14,3872024: 16,97518%
- Tests and treatments
- 2023: 3,7722024: 3,12417%
- Surgery
- 2023: 1,0852024: 86021%
- Office and hospital visits
- 2023: 3032024: 17044%
Dr. Christensen compared with the South Carolina median for ophthalmologists, 2024
- Dr. Christensen
- South Carolina median
- Medicare services
- 21,129vs 2,4468.6 times
- Medicare patients
- 872vs 881Close to median
- Part D claims
- 601vs 74820% below
Medians across 277 ophthalmologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Christensen'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. Christensen and other ophthalmologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory S. Christensen treated 872 Medicare patients in 2024, average age 78
CMS counts 872 Medicare patients who saw Dr. Christensen in 2024. The largest group is 75 to 84, with 361 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Christensen's median patient age at 73, with 49% women.
Dr. Christensen's Medicare patients by age, 2024
Dr. Christensen's Medicare patients by sex, 2024
- Women51559%
- Men35741%
Chronic conditions among Dr. Christensen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis44%
- Chronic kidney disease40%
- Diabetes40%
- Ischemic heart disease28%
- Anxiety25%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Christensen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory S. Christensen wrote 661 Medicare Part D claims in 2024
In 2024, Dr. Christensen wrote 661 Medicare Part D claims for 203 patients. 66% of them were for generic drugs. CMS names the drug for 601 of them, across 10 drugs with 11 or more claims each, at $17,854 in total drug cost. In 2023, CMS named 812 claims across 13 drugs.
Dr. Christensen's Part D claims by kind of drug, 2024
- Generic436 claims66%
- Brand-name225 claims34%
Dr. Christensen'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8122024: 60126%
Drugs named by CMS: 10 in 2024, 13 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. Gregory S. Christensen scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Christensen for performance year 2024, reported as part of a group.
Dr. Christensen's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gregory S. Christensen received $3,255 in industry payments from 2016 to 2024
CMS Open Payments shows 65 general payments to Dr. Christensen from 10 drug and device companies from 2016 to 2024. Ownership or investment make up the largest share, 65% of the total. US Retina LLC paid the most, $2,121.
General payments to Dr. Christensen by program year, 2016 to 2024
General payments to Dr. Christensen by kind, 2016 to 2024
- Ownership or investment$2,12165%
- Food and beverage$1,13435%
Companies that paid Dr. Christensen the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory S. Christensen graduated from Medical University of South Carolina College of Medicine
Dr. Christensen graduated from Medical University of South Carolina College of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory S. Christensen'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 | Clinician Public Reporting: Overall MIPS Performance (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. Gregory S. Christensen
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. Gregory S. Christensen's NPI number?
Dr. Gregory S. Christensen's NPI number is 1851374482. It was assigned on November 29, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory S. Christensen?
Dr. Gregory S. Christensen is an ophthalmologist in Greenville, South Carolina. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Gregory S. Christensen practice?
Dr. Christensen practices at 1126 Grove Rd, Greenville, SC 29605. Dr. Christensen's primary practice is Retina Consultants of Carolina, PA in Greenville, South Carolina. Dmand AI also links Dr. Christensen to 1 group practice or clinic and 1 medical group.
What is Dr. Gregory S. Christensen's office phone number?
The practice phone on file for Dr. Christensen is (864) 233-5722.
What is Dr. Gregory S. Christensen's medical license number?
Dr. Christensen holds South Carolina license 17217.
Does Dr. Gregory S. Christensen accept Medicare?
Yes. CMS data shows Dr. Christensen billed Medicare for 21,129 services in 2024.
What is Dr. Gregory S. Christensen's MIPS score?
Dr. Christensen's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Gregory S. Christensen see?
CMS counts 872 Medicare patients who saw Dr. Christensen in 2024, with an average age of 78.
What services does Dr. Gregory S. Christensen bill to Medicare?
In 2024, Dr. Christensen's most billed Medicare services were injected or infused drug (J2777), eye exam or test (92134) and surgery: eye (67028).
Where did Dr. Gregory S. Christensen go to medical school?
Dr. Christensen graduated from Medical University of South Carolina College of Medicine in 1985.
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What drugs does Dr. Gregory S. Christensen prescribe most?
In 2024 Medicare Part D data, Dr. Christensen's most prescribed drugs by claims were Prednisolone Acetate, Ketorolac Tromethamine and Timolol Maleate.
Has Dr. Gregory S. Christensen received payments from drug or device companies?
CMS Open Payments shows $3,255 in general payments to Dr. Christensen from 10 companies from 2016 to 2024. The largest total came from US Retina LLC.
How long has Dr. Gregory S. Christensen been practicing?
Dr. Christensen graduated from medical school in 1985, 41 years ago.
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