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Dr. Erik M. Happ, MD
NPI1861484032PAC ID0244267656
- Medicare services, 2024
- 615
- Medicare patients, 2024
- 301
- Part D claims, 2024
- 451
- Publications
- 4
- Industry payments
- $124,405
- Practice address
- 2861 Tricom St, North Charleston, SC 29406
- Practice phone
- Call (843) 725-0064
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Carolina Eyecare Physicians
North Charleston, South Carolina
Find Dr. Happ's professional email, personal email and mobile number
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Dr. Erik M. Happ is an ophthalmologist in North Charleston, South Carolina
Dr. Happ practices at Carolina Eyecare Physicians in North Charleston, South Carolina.
Dr. Happ's NPI, 1861484032, was assigned on August 16, 2005. Dr. Happ graduated from Hahnemann University College of Medicine in 1997. Dr. Happ holds South Carolina license 92300.
NPI and contact details
- NPI
- 1861484032NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244267656
- NPI enumeration date
- August 16, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (843) 725-0064
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Erik M. Happ practices at Carolina Eyecare Physicians in North Charleston, South Carolina
Dr. Happ's primary practice is Carolina Eyecare Physicians, at 2861 Tricom St, North Charleston, SC 29406 in Charleston County. The practice phone is (843) 725-0064.
- Carolina Eyecare Physicians2861 Tricom St, North Charleston, SC 29406 · Charleston CountyPhone(843) 725-0064
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Erik M. Happ is affiliated with 7 sites of care and 6 medical groups
Dr. Happ's primary practice is Carolina Eyecare Physicians in North Charleston, South Carolina. Dmand AI also links Dr. Happ to 6 group practices and clinics and 6 medical groups, each named with a free account.
Carolina Eyecare PhysiciansPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Erik M. Happ's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Happ practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Carolina Eyecare Physicians | Available with a free account |
| +6 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Erik M. Happ is one of 269 ophthalmologists in South Carolina
Ophthalmology is Dr. Happ's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Happ's licenses on file in 2 states: South Carolina and Pennsylvania.
Specialties and state licenses
- Ophthalmology, South CarolinaPrimary
- Pennsylvania license
Ophthalmologists near Dr. Happ
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. Erik M. Happ billed Medicare for 615 services in 2024
CMS data shows 615 Medicare services from Dr. Happ across 11 procedure codes in 2024, for 301 Medicare patients. Medicare paid $57,707 for them.
Medicare services, 2024615
Medicare patients301
Paid by Medicare$57,707
Procedure codes11
Dr. Happ's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 692024: 421510%
- Surgery
- 2023: 312024: 97213%
- Office and hospital visits
- 2023: 1112024: 9713%
Where Dr. Happ's Medicare services took place, 2024
- In an office56191%
- In a facility549%
Dr. Happ compared with the South Carolina median for ophthalmologists, 2024
- Dr. Happ
- South Carolina median
- Medicare services
- 615vs 2,44675% below
- Medicare patients
- 301vs 88166% below
- Part D claims
- 356vs 74852% below
Medians across 277 ophthalmologists in South Carolina with Dmand AI profiles that report each measure.
Dr. Happ'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. Happ and other ophthalmologists in South Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Erik M. Happ treated 301 Medicare patients in 2024, average age 76
CMS counts 301 Medicare patients who saw Dr. Happ in 2024. The largest group is 65 to 74, with 133 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Happ's median patient age at 72, with 65% women.
Medicare patients, 2024301
Average age76
Average risk score1.05
Dr. Happ's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Happ's Medicare patients by sex, 2024
- Women18160%
- Men12040%
Chronic conditions among Dr. Happ's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes27%
- Anxiety25%
- Ischemic heart disease22%
- Chronic kidney disease21%
- Atrial fibrillation19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Happ's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women65%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Erik M. Happ wrote 451 Medicare Part D claims in 2024
In 2024, Dr. Happ wrote 451 Medicare Part D claims for 292 patients. 56% of them were for generic drugs. CMS names the drug for 356 of them, across 6 drugs with 11 or more claims each, at $1,268,063 in total drug cost. In 2023, CMS named 323 claims across 7 drugs.
Part D claims, 2024451
Drugs named by CMS6
Total drug cost$1.3M
Part D patients292
Dr. Happ's Part D claims by kind of drug, 2024
- Generic253 claims56%
- Brand-name198 claims44%
Dr. Happ'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. Happ's Part D claims, 2024
- Antibiotics4%17 of 451 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: 3232024: 35610%
Drugs named by CMS: 6 in 2024, 7 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
How Dr. Erik M. Happ takes part in Medicare
Dr. Happ accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Erik M. Happ has 4 publications on record
Dmand AI links 4 papers to Dr. Happ, published from 2017 to 2021. Dr. Happ's most frequent co-authors are Kevin M. Kelly, MD, Jody Leonardo, MD and Joshua Michael Lucas, MD.
Papers4
Years published2017 to 2021
Dr. Happ's papers by year, 2017 to 2021
Dr. Happ's most frequent co-authors
- Kevin M. Kelly, MD1 shared paper
- Jody Leonardo, MD1 shared paper
- Joshua Michael Lucas, MD1 shared paper
Recent publications by Dr. Happ
Neurosurgery
Cranial Fossa, AnteriorCraniotomyIntracranial Aneurysm
See who Dr. Happ researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Happ works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Erik M. Happ received $124,405 in industry payments from 2016 to 2025
CMS Open Payments shows 197 general payments to Dr. Happ from 21 drug and device companies from 2016 to 2025. Honoraria make up the largest share, 53% of the total. Horizon Pharma plc paid the most, $93,224.
General payments to Dr. Happ by program year, 2016 to 2025
General payments to Dr. Happ by kind, 2016 to 2025
$124.4Kin total
- Honoraria$65,61853%
- Speaker and faculty fees$38,55031%
- Travel and lodging$9,0127%
- Consulting fees$6,3455%
- Other$4,8814%
Companies that paid Dr. Happ the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Erik M. Happ graduated from Hahnemann University College of Medicine
Dr. Happ graduated from Hahnemann University College of Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Erik M. Happ'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Erik M. Happ
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. Erik M. Happ's NPI number?
Dr. Erik M. Happ's NPI number is 1861484032. It was assigned on August 16, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Erik M. Happ?
Dr. Erik M. Happ is an ophthalmologist in North Charleston, South Carolina. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Erik M. Happ practice?
Dr. Happ practices at 2861 Tricom St, North Charleston, SC 29406. Dr. Happ's primary practice is Carolina Eyecare Physicians in North Charleston, South Carolina. Dmand AI also links Dr. Happ to 6 group practices and clinics and 6 medical groups.
What is Dr. Erik M. Happ's office phone number?
The practice phone on file for Dr. Happ is (843) 725-0064.
What is Dr. Erik M. Happ's medical license number?
Dr. Happ holds South Carolina license 92300, one of the licenses on file in 2 states.
Which states has Dr. Erik M. Happ been licensed in?
Dmand AI has state licenses on file for Dr. Happ in South Carolina and Pennsylvania.
Does Dr. Erik M. Happ accept Medicare?
Yes. CMS data shows Dr. Happ billed Medicare for 615 services in 2024, and Dr. Happ accepts Medicare assignment.
How many Medicare patients does Dr. Erik M. Happ see?
CMS counts 301 Medicare patients who saw Dr. Happ in 2024, with an average age of 76.
What services does Dr. Erik M. Happ bill to Medicare?
In 2024, Dr. Happ's most billed Medicare services were eye exam or test (92012), eye exam or test (92285) and eye exam or test (92081).
Where did Dr. Erik M. Happ go to medical school?
Dr. Happ graduated from Hahnemann University College of Medicine in 1997.
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What drugs does Dr. Erik M. Happ prescribe most?
In 2024 Medicare Part D data, Dr. Happ's most prescribed drugs by claims were Neomycin-Polymyxin-Dexameth, Lumigan and Prednisone.
Has Dr. Erik M. Happ received payments from drug or device companies?
CMS Open Payments shows $124,405 in general payments to Dr. Happ from 21 companies from 2016 to 2025. The largest total came from Horizon Pharma plc.
How long has Dr. Erik M. Happ been practicing?
Dr. Happ graduated from medical school in 1997, 29 years ago.
Does Dr. Erik M. Happ do research?
Dmand AI links 4 publications to Dr. Happ, published from 2017 to 2021.
Who does Dr. Erik M. Happ publish with?
Dr. Happ's most frequent co-authors are Kevin M. Kelly, MD (1 shared paper), Jody Leonardo, MD (1 shared paper) and Joshua Michael Lucas, MD (1 shared paper).
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