Dr. David Matthew Grosiak, DO
- Medicare services, 2024
- 643
- Medicare patients, 2024
- 621
- Part D claims, 2024
- 281
- Hospital affiliations
- 3
- Industry payments
- $170
- Practice address
- 100 Bowman Drive, Voorhees, NJ 08043
- Practice phone
- Call (856) 247-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grosiak'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. David Matthew Grosiak is an emergency medicine physician in Voorhees, New Jersey
Dr. Grosiak practices at Virtua Voorhees Hospital in Voorhees, New Jersey, part of Virtua Health.
Dr. Grosiak's NPI, 1942447073, was assigned on January 12, 2009. Dr. Grosiak holds New Jersey license 25MB09125500.
- NPI
- 1942447073NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486810389
- NPI enumeration date
- January 12, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (856) 247-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Matthew Grosiak practices at Virtua Voorhees Hospital in Voorhees, New Jersey
Dr. Grosiak's primary practice is Virtua Voorhees Hospital, at 100 Bowman Drive, Voorhees, NJ 08043 in Camden County. The practice phone is (856) 247-3000.
- Virtua Voorhees Hospital100 Bowman Drive, Voorhees, NJ 08043 · Camden CountyPhone(856) 247-3000
Source: Dmand AI Affiliation Data
Dr. David Matthew Grosiak is affiliated with 3 sites of care and 4 medical groups
Dr. Grosiak's primary practice is Virtua Voorhees Hospital in Voorhees, New Jersey, part of Virtua Health. Dr. Grosiak is also affiliated with Inspira Medical Center Vineland. The medical group on file is Virtua Health. Dmand AI also links Dr. Grosiak to 1 more hospital and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Matthew Grosiak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grosiak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Virtua Voorhees Hospital | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Virtua Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. David Matthew Grosiak is one of 1,548 emergency medicine physicians in New Jersey
Emergency medicine is Dr. Grosiak's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Grosiak's licenses on file in 2 states: New Jersey and Pennsylvania.
Specialties and state licenses
- Emergency medicine, New JerseyPrimary
- Pennsylvania license
Emergency medicine physicians near Dr. Grosiak
Counts of emergency 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. David Matthew Grosiak billed Medicare for 643 services in 2024
CMS data shows 643 Medicare services from Dr. Grosiak across 3 procedure codes in 2024, for 621 Medicare patients. Medicare paid $82,235 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grosiak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7442024: 64314%
Dr. Grosiak compared with the New Jersey median for emergency medicine physicians, 2024
- Dr. Grosiak
- New Jersey median
- Medicare services
- 643vs 32697% above
- Medicare patients
- 621vs 32193% above
- Part D claims
- 138vs 472.9 times
Medians across 1,494 emergency medicine physicians in New Jersey with Dmand AI profiles that report each measure.
Dr. Grosiak'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. Grosiak and other emergency medicine physicians in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Matthew Grosiak treated 621 Medicare patients in 2024, average age 76
CMS counts 621 Medicare patients who saw Dr. Grosiak in 2024. The largest group is 65 to 74, with 206 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.97, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Grosiak's median patient age at 51, with 61% women.
Dr. Grosiak's Medicare patients by age, 2024
Dr. Grosiak's Medicare patients by sex, 2024
- Women38061%
- Men24139%
Chronic conditions among Dr. Grosiak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Anxiety48%
- Mood disorders46%
- Diabetes41%
- Ischemic heart disease41%
- Depression40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grosiak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women61%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Matthew Grosiak wrote 281 Medicare Part D claims in 2024
In 2024, Dr. Grosiak wrote 281 Medicare Part D claims for 195 patients. 95% of them were for generic drugs. CMS names the drug for 138 of them, across 6 drugs with 11 or more claims each, at $870 in total drug cost. In 2023, CMS named 154 claims across 6 drugs.
Dr. Grosiak's Part D claims by kind of drug, 2024
- Generic266 claims95%
- Brand-name and other15 claims5%
Dr. Grosiak'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. Grosiak's Part D claims, 2024
- Opioids8%22 of 281 claims
- Antibiotics42%117 of 281 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: 1542024: 13810%
Drugs named by CMS: 6 in 2024, 6 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. David Matthew Grosiak takes part in Medicare
Dr. Grosiak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Matthew Grosiak received $170 in industry payments from 2016 to 2020
CMS Open Payments shows 4 general payments to Dr. Grosiak from 2 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $135.
General payments to Dr. Grosiak by program year, 2016 to 2020
Companies that paid Dr. Grosiak the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David Matthew Grosiak'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Matthew Grosiak
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 Matthew Grosiak's NPI number?
Dr. David Matthew Grosiak's NPI number is 1942447073. It was assigned on January 12, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. David Matthew Grosiak?
Dr. David Matthew Grosiak is an emergency medicine physician in Voorhees, New Jersey. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. David Matthew Grosiak practice?
Dr. Grosiak practices at 100 Bowman Drive, Voorhees, NJ 08043. Dr. Grosiak's primary practice is Virtua Voorhees Hospital in Voorhees, New Jersey, part of Virtua Health. Dmand AI also links Dr. Grosiak to 1 hospital and 3 medical groups.
What is Dr. David Matthew Grosiak's office phone number?
The practice phone on file for Dr. Grosiak is (856) 247-3000.
What is Dr. David Matthew Grosiak's medical license number?
Dr. Grosiak holds New Jersey license 25MB09125500, one of the licenses on file in 2 states.
Which states has Dr. David Matthew Grosiak been licensed in?
Dmand AI has state licenses on file for Dr. Grosiak in New Jersey and Pennsylvania.
Which hospitals is Dr. David Matthew Grosiak affiliated with?
Dr. Grosiak practices at Virtua Voorhees Hospital in Voorhees, New Jersey. Dr. Grosiak is also affiliated with Inspira Medical Center Vineland. Dmand AI links Dr. Grosiak to 1 more hospital.
What medical group is Dr. David Matthew Grosiak part of?
Dr. Grosiak is linked to Virtua Health. Dmand AI links Dr. Grosiak to 3 more medical groups.
Does Dr. David Matthew Grosiak accept Medicare?
Yes. CMS data shows Dr. Grosiak billed Medicare for 643 services in 2024, and Dr. Grosiak accepts Medicare assignment.
How many Medicare patients does Dr. David Matthew Grosiak see?
CMS counts 621 Medicare patients who saw Dr. Grosiak in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Dr. David Matthew Grosiak bill to Medicare?
In 2024, Dr. Grosiak's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
What drugs does Dr. David Matthew Grosiak prescribe most?
In 2024 Medicare Part D data, Dr. Grosiak's most prescribed drugs by claims were Cephalexin, Doxycycline Hyclate and Prednisone.
Has Dr. David Matthew Grosiak received payments from drug or device companies?
CMS Open Payments shows $170 in general payments to Dr. Grosiak from 2 companies from 2016 to 2020. The largest total came from Genentech, Inc.
How long has Dr. David Matthew Grosiak been practicing?
Dr. Grosiak graduated from medical school in 2008, 18 years ago.
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