Dr. Marc David Grobman, DO
- Medicare services, 2024
- 2,295
- Medicare patients, 2024
- 314
- Part D claims, 2024
- 6,617
- Hospital affiliations
- 1
- Industry payments
- $19,419
- Practice address
- 3411 Silverside Rd, Wilmington, DE 19810-4812
- Practice phone
- Call (302) 479-0580
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marc Grobman Internal Medicine & Primary Care
Primary care practice · Wilmington, Delaware
Find Dr. Grobman'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. Marc David Grobman is a family medicine physician in Wilmington, Delaware
Dr. Grobman practices at Marc Grobman Internal Medicine & Primary Care in Wilmington, Delaware.
Dr. Grobman's NPI, 1063484442, was assigned on February 1, 2006. Dr. Grobman graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1986. Dr. Grobman holds Delaware license C2-0003657.
- NPI
- 1063484442NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022157338
- NPI enumeration date
- February 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (302) 479-0580
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marc David Grobman practices at Marc Grobman Internal Medicine & Primary Care in Wilmington, Delaware
Dr. Grobman's primary practice is Marc Grobman Internal Medicine & Primary Care, at 3411 Silverside Rd, Wilmington, DE 19810-4812. The practice phone is (302) 479-0580.
- Marc Grobman Internal Medicine & Primary Care3411 Silverside Rd, Wilmington, DE 19810-4812Phone(302) 479-0580
Source: Dmand AI Affiliation Data
Dr. Marc David Grobman is affiliated with 4 sites of care and 1 medical group
Dr. Grobman's primary practice is Marc Grobman Internal Medicine & Primary Care in Wilmington, Delaware. Dr. Grobman is also affiliated with Christiana Hospital. Dmand AI also links Dr. Grobman to 2 more home health agencies and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marc David Grobman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grobman practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marc Grobman Internal Medicine & Primary Care | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marc David Grobman is one of 461 family medicine physicians in Delaware
Family medicine is Dr. Grobman's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Grobman is licensed in Delaware.
Specialties and state licenses
- Family medicine, DelawarePrimary
Family medicine physicians near Dr. Grobman
Counts of family medicine physicians 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. Marc David Grobman billed Medicare for 2,295 services in 2024
CMS data shows 2,295 Medicare services from Dr. Grobman across 14 procedure codes in 2024, for 314 Medicare patients. Medicare paid $148,646 for them. Every service was in an office.
Dr. Grobman's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,7582024: 1,8374%
- Other services
- 2023: 1382024: 297115%
- Tests and treatments
- 2023: 1782024: 9944%
- Lab and pathology
- 2023: 582024: 627%
Dr. Grobman compared with the Delaware median for family medicine physicians, 2024
- Dr. Grobman
- Delaware median
- Medicare services
- 2,295vs 6503.5 times
- Medicare patients
- 314vs 27215% above
- Part D claims
- 5,646vs 1,0875.2 times
Medians across 429 family medicine physicians in Delaware with Dmand AI profiles that report each measure.
Dr. Grobman'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 Dr. Grobman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grobman and other family medicine physicians in Delaware.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marc David Grobman treated 314 Medicare patients in 2024, average age 75
CMS counts 314 Medicare patients who saw Dr. Grobman in 2024. The largest group is 65 to 74, with 146 patients. 71% of them have high blood pressure, and 68% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Grobman's median patient age at 64, with 46% women.
Dr. Grobman's Medicare patients by age, 2024
Dr. Grobman's Medicare patients by sex, 2024
- Women16352%
- Men15148%
Chronic conditions among Dr. Grobman's Medicare patients, 2024
- High blood pressure71%
- High cholesterol68%
- Arthritis49%
- Diabetes26%
- Anxiety25%
- Chronic kidney disease23%
- Mood disorders20%
- Ischemic heart disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grobman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women46%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marc David Grobman wrote 6,617 Medicare Part D claims in 2024
In 2024, Dr. Grobman wrote 6,617 Medicare Part D claims for 430 patients. 84% of them were for generic drugs. CMS names the drug for 5,646 of them, across 129 drugs with 11 or more claims each, at $693,791 in total drug cost. In 2023, CMS named 5,599 claims across 130 drugs.
Dr. Grobman's Part D claims by kind of drug, 2024
- Generic5,562 claims84%
- Brand-name1,014 claims15%
- Other41 claims1%
Dr. Grobman'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. Grobman's Part D claims, 2024
- Opioids9%570 of 6,617 claims
- Antibiotics3%177 of 6,617 claims
- Antipsychotics, patients 65 and over0%24 of 6,617 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: 5,5992024: 5,6461%
Drugs named by CMS: 129 in 2024, 130 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. Marc David Grobman offers telehealth to Medicare patients
Dr. Grobman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Grobman as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 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. Marc David Grobman received $19,419 in industry payments from 2016 to 2025
CMS Open Payments shows 1,191 general payments to Dr. Grobman from 70 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. GlaxoSmithKline, LLC. paid the most, $2,383.
General payments to Dr. Grobman by program year, 2016 to 2025
General payments to Dr. Grobman by kind, 2016 to 2025
- Food and beverage$19,26199%
- Education$1221%
- Speaker and faculty fees$350%
Companies that paid Dr. Grobman 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. Marc David Grobman graduated from Des Moines University of Osteopathic Medicine and Health Sciences
Dr. Grobman graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marc David Grobman'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 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. Marc David Grobman
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. Marc David Grobman's NPI number?
Dr. Marc David Grobman's NPI number is 1063484442. It was assigned on February 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marc David Grobman?
Dr. Marc David Grobman is a family medicine physician in Wilmington, Delaware. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Marc David Grobman practice?
Dr. Grobman practices at 3411 Silverside Rd, Wilmington, DE 19810-4812. Dr. Grobman's primary practice is Marc Grobman Internal Medicine & Primary Care in Wilmington, Delaware. Dmand AI also links Dr. Grobman to 2 home health agencies and 1 medical group.
What is Dr. Marc David Grobman's office phone number?
The practice phone on file for Dr. Grobman is (302) 479-0580.
What is Dr. Marc David Grobman's medical license number?
Dr. Grobman holds Delaware license C2-0003657.
Which hospitals is Dr. Marc David Grobman affiliated with?
Dr. Grobman is affiliated with Christiana Hospital.
Does Dr. Marc David Grobman accept Medicare?
Yes. CMS data shows Dr. Grobman billed Medicare for 2,295 services in 2024, and Dr. Grobman accepts Medicare assignment.
Does Dr. Marc David Grobman offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Grobman as offering telehealth services.
How many Medicare patients does Dr. Marc David Grobman see?
CMS counts 314 Medicare patients who saw Dr. Grobman in 2024, with an average age of 75.
What services does Dr. Marc David Grobman bill to Medicare?
In 2024, Dr. Grobman's most billed Medicare services were office visit, established patient (99214), care management and other visits (99490) and care management and other visits (99497).
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Where did Dr. Marc David Grobman go to medical school?
Dr. Grobman graduated from Des Moines University of Osteopathic Medicine and Health Sciences in 1986.
What drugs does Dr. Marc David Grobman prescribe most?
In 2024 Medicare Part D data, Dr. Grobman's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Oxycodone HCl.
Has Dr. Marc David Grobman received payments from drug or device companies?
CMS Open Payments shows $19,419 in general payments to Dr. Grobman from 70 companies from 2016 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Marc David Grobman been practicing?
Dr. Grobman graduated from medical school in 1986, 40 years ago.
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