Ichthyosiform Erythroderma, CongenitalMothersNetherton Syndrome
Gregory P. Wittenberg
NPI1760418420PAC ID2860409117
- Medicare services, 2024
- 4,638
- Medicare patients, 2024
- 778
- Part D claims, 2024
- 519
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2820 Mt Rushmore Road, Rapid City, SD 57701
- Practice phone
- Call (605) 721-8121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Endoscopy Center - Rapid City
Surgery Center - Medicare-Certified · Rapid City, South Dakota
Find Gregory Wittenberg'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.
Gregory P. Wittenberg is a dermatologist in Rapid City, South Dakota
Gregory Wittenberg practices at The Endoscopy Center - Rapid City in Rapid City, South Dakota.
Gregory Wittenberg's NPI, 1760418420, was assigned on June 24, 2006. Gregory Wittenberg graduated from Sanford School of Medicine of University of South Dakota in 1994. Gregory Wittenberg holds South Dakota license 4524.
NPI and contact details
- NPI
- 1760418420NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860409117
- NPI enumeration date
- June 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (605) 721-8121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory P. Wittenberg practices at The Endoscopy Center - Rapid City in Rapid City, South Dakota
Gregory Wittenberg's primary practice is The Endoscopy Center - Rapid City, at 2820 Mt Rushmore Road, Rapid City, SD 57701. The practice phone is (605) 721-8121.
- The Endoscopy Center - Rapid City2820 Mt Rushmore Road, Rapid City, SD 57701Phone(605) 721-8121
Source: Dmand AI Affiliation Data
Gregory P. Wittenberg is affiliated with 3 sites of care and 2 medical groups
Gregory Wittenberg's primary practice is The Endoscopy Center - Rapid City in Rapid City, South Dakota. Gregory Wittenberg is also affiliated with Monument Health Rapid City Hospital. The medical group on file is Black Hills Surgical Hospital. Dmand AI also links Gregory Wittenberg to 1 more group practice or clinic and 1 medical group, each named with a free account.
The Endoscopy Center - Rapid CityPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory P. Wittenberg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Wittenberg practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Endoscopy Center - Rapid City | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Gregory Wittenberg practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Gregory P. Wittenberg is one of 48 dermatologists in South Dakota
Dermatology is Gregory Wittenberg's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Gregory Wittenberg is licensed in South Dakota.
Specialties and state licenses
- Dermatology, South DakotaPrimary
Dermatologists near Gregory Wittenberg
Counts of dermatologists 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
Gregory P. Wittenberg billed Medicare for 4,638 services in 2024
CMS data shows 4,638 Medicare services from Gregory Wittenberg across 44 procedure codes in 2024, for 778 Medicare patients. Medicare paid $715,205 for them. Every service was in an office.
Medicare services, 20244,638
Medicare patients778
Paid by Medicare$715,205
Procedure codes44
Gregory Wittenberg's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 3,8602024: 3,5588%
- Office and hospital visits
- 2023: 6332024: 5789%
- Lab and pathology
- 2023: 5612024: 50211%
- Drugs given in the office
- 2023: 302024: 0100%
Gregory Wittenberg compared with the South Dakota median for dermatologists, 2024
- Gregory Wittenberg
- South Dakota median
- Medicare services
- 4,638vs 3,06451% above
- Medicare patients
- 778vs 7228% above
- Part D claims
- 409vs 4356% below
Medians across 47 dermatologists in South Dakota with Dmand AI profiles that report each measure.
Gregory Wittenberg'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.
Need commercial claims for Gregory Wittenberg?
Medicare shows one payer. Book a meeting to get commercial claims data for Gregory Wittenberg and other dermatologists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Gregory P. Wittenberg treated 778 Medicare patients in 2024, average age 77
CMS counts 778 Medicare patients who saw Gregory Wittenberg in 2024. The largest group is 65 to 74, with 354 patients. 69% of them have high cholesterol, and 64% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Wittenberg's median patient age at 73, with 48% women.
Medicare patients, 2024778
Average age77
Average risk score0.93
Gregory Wittenberg's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Wittenberg's Medicare patients by sex, 2024
- Women34444%
- Men43456%
Chronic conditions among Gregory Wittenberg's Medicare patients, 2024
- High cholesterol69%
- High blood pressure64%
- Arthritis45%
- Ischemic heart disease21%
- Diabetes20%
- Osteoporosis17%
- Atrial fibrillation16%
- Chronic kidney disease15%
Share of Medicare patients with each condition. A patient can have several.
Gregory Wittenberg'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
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory P. Wittenberg wrote 519 Medicare Part D claims in 2024
In 2024, Gregory Wittenberg wrote 519 Medicare Part D claims for 310 patients. 99% of them were for generic drugs. CMS names the drug for 409 of them, across 9 drugs with 11 or more claims each, at $5,528 in total drug cost. In 2023, CMS named 335 claims across 9 drugs.
Part D claims, 2024519
Drugs named by CMS9
Total drug cost$5,528
Part D patients310
Gregory Wittenberg's Part D claims by kind of drug, 2024
- Generic515 claims99%
- Brand-name and other4 claims1%
Gregory Wittenberg'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 Gregory Wittenberg's Part D claims, 2024
- Opioids3%16 of 519 claims
- Antibiotics50%262 of 519 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: 3352024: 40922%
Drugs named by CMS: 9 in 2024, 9 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
Gregory P. Wittenberg ranks in the 98th percentile for melanoma (skin cancer) excision in Medicare
Gregory Wittenberg accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 249 procedures of melanoma (skin cancer) excision by Gregory Wittenberg, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Gregory Wittenberg ranks in Medicare procedure volume
- Removal of skin lesions
- 94th percentile1,104 procedures
- Removal of skin cancer
- 82nd percentile905 procedures
- Melanoma (skin cancer) excision
- 98th percentile249 procedures
- Skin biopsy
- 84th percentile188 procedures
- Removal or shaving of skin growth
- 88th percentile154 procedures
- Removal of nail tissue
- 58th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of tissue: 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)
For MedTech and pharma teams
Find dermatologists like Gregory Wittenberg by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Gregory P. Wittenberg has 1 publication on record
Dmand AI links 1 paper to Gregory Wittenberg. Gregory Wittenberg's most frequent co-author is Jack G. Demoss, MD.
Papers1
Gregory Wittenberg's most frequent co-authors
Recent publications by Gregory Wittenberg
See who Gregory Wittenberg researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Gregory Wittenberg works with, so you can find a warm path to the right dermatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Gregory P. Wittenberg received $1,058 in industry payments from 2016 to 2025
CMS Open Payments shows 55 general payments to Gregory Wittenberg from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $375.
General payments to Gregory Wittenberg by program year, 2016 to 2025
Companies that paid Gregory Wittenberg the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregory P. Wittenberg graduated from Sanford School of Medicine of University of South Dakota
Gregory Wittenberg graduated from Sanford School of Medicine of University of South Dakota in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory P. Wittenberg'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 Gregory P. Wittenberg
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory P. Wittenberg's NPI number?
Gregory P. Wittenberg's NPI number is 1760418420. It was assigned on June 24, 2006, and it is active in the NPI Registry.
What does Gregory P. Wittenberg specialize in?
Gregory P. Wittenberg is a dermatologist in Rapid City, South Dakota. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).
Where does Gregory P. Wittenberg practice?
Gregory Wittenberg practices at 2820 Mt Rushmore Road, Rapid City, SD 57701. Gregory Wittenberg's primary practice is The Endoscopy Center - Rapid City in Rapid City, South Dakota. Dmand AI also links Gregory Wittenberg to 1 group practice or clinic and 1 medical group.
What is Gregory P. Wittenberg's office phone number?
The practice phone on file for Gregory Wittenberg is (605) 721-8121.
What is Gregory P. Wittenberg's medical license number?
Gregory Wittenberg holds South Dakota license 4524.
Which hospitals is Gregory P. Wittenberg affiliated with?
Gregory Wittenberg is affiliated with Monument Health Rapid City Hospital.
What medical group is Gregory P. Wittenberg part of?
Gregory Wittenberg is linked to Black Hills Surgical Hospital. Dmand AI links Gregory Wittenberg to 1 more medical group.
Does Gregory P. Wittenberg accept Medicare?
Yes. CMS data shows Gregory Wittenberg billed Medicare for 4,638 services in 2024, and Gregory Wittenberg accepts Medicare assignment.
How many Medicare patients does Gregory P. Wittenberg see?
CMS counts 778 Medicare patients who saw Gregory Wittenberg in 2024, with an average age of 77.
What services does Gregory P. Wittenberg bill to Medicare?
In 2024, Gregory Wittenberg's most billed Medicare services were surgery: skin and soft tissue (17003), surgery: skin and soft tissue (17311) and surgery: skin and soft tissue (17312).
Show 6 more questionsShow fewer questions
Where did Gregory P. Wittenberg go to medical school?
Gregory Wittenberg graduated from Sanford School of Medicine of University of South Dakota in 1994.
What drugs does Gregory P. Wittenberg prescribe most?
In 2024 Medicare Part D data, Gregory Wittenberg's most prescribed drugs by claims were Cephalexin, Triamcinolone Acetonide and Clindamycin HCl.
Has Gregory P. Wittenberg received payments from drug or device companies?
CMS Open Payments shows $1,058 in general payments to Gregory Wittenberg from 16 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Gregory P. Wittenberg been practicing?
Gregory Wittenberg graduated from medical school in 1994, 32 years ago.
Does Gregory P. Wittenberg do research?
Dmand AI links 1 publication to Gregory Wittenberg.
Who does Gregory P. Wittenberg publish with?
Gregory Wittenberg's most frequent co-authors are Jack G. Demoss, MD (1 shared paper).
Selling to dermatology practices?
See dermatologists in South Dakota by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card