Dr. Jason Slack, DO
- Medicare services, 2024
- 1,126
- Medicare patients, 2024
- 599
- Part D claims, 2024
- 498
- Hospital affiliations
- 1
- Industry payments
- $1,324
- Practice address
- 11116 Medical Campus Road, Hagerstown, MD 21742
- Practice phone
- Call (240) 313-9500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Slack'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. Jason Slack is an internist in Hagerstown, Maryland
Dr. Slack practices at Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health.
Dr. Slack's NPI, 1043692197, was assigned on June 25, 2015. Dr. Slack graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2015. Dr. Slack holds Maryland license H96459.
- NPI
- 1043692197NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507129186
- NPI enumeration date
- June 25, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (240) 313-9500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jason Slack practices at Meritus Medical Center in Hagerstown, Maryland
Dr. Slack's primary practice is Meritus Medical Center, at 11116 Medical Campus Road, Hagerstown, MD 21742 in Washington County. The practice phone is (240) 313-9500.
- Meritus Medical Center11116 Medical Campus Road, Hagerstown, MD 21742 · Washington CountyPhone(240) 313-9500
Source: Dmand AI Affiliation Data
Dr. Jason Slack is affiliated with 2 sites of care and 1 medical group
Dr. Slack's primary practice is Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health. The medical group on file is Meritus Radiology. Dmand AI also links Dr. Slack to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jason Slack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Slack practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Meritus Medical Center | Available with a free account |
| +1 more affiliated site | 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 Meritus Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jason Slack is one of 3,320 internists in Maryland
Internal medicine is Dr. Slack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Slack's licenses on file in 3 states: Maryland, Kansas and Missouri.
Specialties and state licenses
- Internal medicine, MarylandPrimary
- Kansas license
- Missouri license
Internists near Dr. Slack
Counts of internists 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. Jason Slack billed Medicare for 1,126 services in 2024
CMS data shows 1,126 Medicare services from Dr. Slack across 6 procedure codes in 2024, for 599 Medicare patients. Medicare paid $80,660 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Slack's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2312024: 1,1269%
Dr. Slack compared with the Maryland median for internists, 2024
- Dr. Slack
- Maryland median
- Medicare services
- 1,126vs 65672% above
- Medicare patients
- 599vs 2512.4 times
- Part D claims
- 227vs 30927% below
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Slack'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. Slack and other internists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jason Slack treated 599 Medicare patients in 2024, average age 76
CMS counts 599 Medicare patients who saw Dr. Slack in 2024. The largest group is 75 to 84, with 211 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.20, 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. Slack's median patient age at 73, with 53% women.
Dr. Slack's Medicare patients by age, 2024
Dr. Slack's Medicare patients by sex, 2024
- Women32254%
- Men27746%
Chronic conditions among Dr. Slack's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Ischemic heart disease58%
- Mood disorders56%
- Anxiety53%
- Depression50%
- Diabetes48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Slack'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
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jason Slack wrote 498 Medicare Part D claims in 2024
In 2024, Dr. Slack wrote 498 Medicare Part D claims for 261 patients. 90% of them were for generic drugs. CMS names the drug for 227 of them, across 11 drugs with 11 or more claims each, at $7,844 in total drug cost. In 2023, CMS named 126 claims across 8 drugs.
Dr. Slack's Part D claims by kind of drug, 2024
- Generic448 claims90%
- Brand-name and other50 claims10%
Dr. Slack'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. Slack's Part D claims, 2024
- Opioids4%21 of 498 claims
- Antibiotics21%106 of 498 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: 1262024: 22780%
Drugs named by CMS: 11 in 2024, 8 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. Jason Slack takes part in Medicare
Dr. Slack 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. Jason Slack received $1,324 in industry payments from 2016 to 2023
CMS Open Payments shows 38 general payments to Dr. Slack from 10 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $540.
General payments to Dr. Slack by program year, 2016 to 2023
Companies that paid Dr. Slack the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jason Slack graduated from Edward Via Col of Osteo Medicine-Virginia Campus
Dr. Slack graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jason Slack'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) |
| 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. Jason Slack
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. Jason Slack's NPI number?
Dr. Jason Slack's NPI number is 1043692197. It was assigned on June 25, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Jason Slack?
Dr. Jason Slack is an internist in Hagerstown, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jason Slack practice?
Dr. Slack practices at 11116 Medical Campus Road, Hagerstown, MD 21742. Dr. Slack's primary practice is Meritus Medical Center in Hagerstown, Maryland, part of Meritus Health. Dmand AI also links Dr. Slack to 1 hospice.
What is Dr. Jason Slack's office phone number?
The practice phone on file for Dr. Slack is (240) 313-9500.
What is Dr. Jason Slack's medical license number?
Dr. Slack holds Maryland license H96459, one of the licenses on file in 3 states.
Which states has Dr. Jason Slack been licensed in?
Dmand AI has state licenses on file for Dr. Slack in Maryland, Kansas and Missouri.
Which hospitals is Dr. Jason Slack affiliated with?
Dr. Slack practices at Meritus Medical Center in Hagerstown, Maryland.
What medical group is Dr. Jason Slack part of?
Dr. Slack is linked to Meritus Radiology.
Does Dr. Jason Slack accept Medicare?
Yes. CMS data shows Dr. Slack billed Medicare for 1,126 services in 2024, and Dr. Slack accepts Medicare assignment.
How many Medicare patients does Dr. Jason Slack see?
CMS counts 599 Medicare patients who saw Dr. Slack in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Jason Slack bill to Medicare?
In 2024, Dr. Slack's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Jason Slack go to medical school?
Dr. Slack graduated from Edward Via Col of Osteo Medicine-Virginia Campus in 2015.
What drugs does Dr. Jason Slack prescribe most?
In 2024 Medicare Part D data, Dr. Slack's most prescribed drugs by claims were Prednisone, Cefdinir and Amoxicillin-Clavulanate Potass.
Has Dr. Jason Slack received payments from drug or device companies?
CMS Open Payments shows $1,324 in general payments to Dr. Slack from 10 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Jason Slack been practicing?
Dr. Slack graduated from medical school in 2015, 11 years ago.
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