Dr. David M. Slack, MD
- Medicare services, 2024
- 5,935
- Medicare patients, 2024
- 695
- Part D claims, 2024
- 5,199
- Hospital affiliations
- 2
- Industry payments
- $21
- Practice address
- 238 Northampton St, Easthampton, MA 01027
- Practice phone
- Call (413) 774-6301
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Valley Medical Group
Easthampton, Massachusetts
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. David M. Slack is an internist in Easthampton, Massachusetts
Dr. Slack practices at Valley Medical Group in Easthampton, Massachusetts.
Dr. Slack's NPI, 1205895554, was assigned on March 23, 2006. Dr. Slack graduated from New York Medical College in 1985. Dr. Slack holds Massachusetts license 72497.
- NPI
- 1205895554NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9234186859
- NPI enumeration date
- March 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (413) 774-6301
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David M. Slack practices at Valley Medical Group in Easthampton, Massachusetts
Dr. Slack's primary practice is Valley Medical Group, at 238 Northampton St, Easthampton, MA 01027 in Hampshire County. The practice phone is (413) 774-6301.
- Valley Medical Group238 Northampton St, Easthampton, MA 01027 · Hampshire CountyPhone(413) 774-6301
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David M. Slack is affiliated with 6 sites of care and 1 medical group
Dr. Slack's primary practice is Valley Medical Group in Easthampton, Massachusetts. Dr. Slack is also affiliated with Baystate Medical Center. The medical group on file is Valley Medical Group. Dmand AI also links Dr. Slack to 1 more hospital, 2 home health agencies and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David M. Slack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Slack practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Medical Group | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David M. Slack is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Slack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Slack is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
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. David M. Slack billed Medicare for 5,935 services in 2024
CMS data shows 5,935 Medicare services from Dr. Slack across 57 procedure codes in 2024, for 695 Medicare patients. Medicare paid $150,200 for them. Every service was in an office.
Dr. Slack's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,6642024: 3,18019%
- Office and hospital visits
- 2023: 1,1792024: 1,1205%
- Surgery
- 2023: 8802024: 96910%
- Other services
- 2023: 4002024: 3737%
- Imaging
- 2023: 1172024: 235101%
- Tests and treatments
- 2023: 1422024: 5859%
Dr. Slack compared with the Massachusetts median for internists, 2024
- Dr. Slack
- Massachusetts median
- Medicare services
- 5,935vs 43113.8 times
- Medicare patients
- 695vs 1943.6 times
- Part D claims
- 4,558vs 40211.3 times
Medians across 5,369 internists in Massachusetts 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.
Need commercial claims for Dr. Slack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Slack and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David M. Slack treated 695 Medicare patients in 2024, average age 71
CMS counts 695 Medicare patients who saw Dr. Slack in 2024. The largest group is 65 to 74, with 286 patients. 69% of them have high blood pressure, and 63% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Slack's median patient age at 59, with 52% women.
Dr. Slack's Medicare patients by age, 2024
Dr. Slack's Medicare patients by sex, 2024
- Women37754%
- Men31846%
Chronic conditions among Dr. Slack's Medicare patients, 2024
- High blood pressure69%
- High cholesterol63%
- Arthritis35%
- Mood disorders35%
- Depression31%
- Anxiety29%
- Chronic kidney disease25%
- Diabetes25%
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 59
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David M. Slack wrote 5,199 Medicare Part D claims in 2024
In 2024, Dr. Slack wrote 5,199 Medicare Part D claims for 422 patients. 89% of them were for generic drugs. CMS names the drug for 4,558 of them, across 102 drugs with 11 or more claims each, at $355,920 in total drug cost. In 2023, CMS named 4,462 claims across 103 drugs.
Dr. Slack's Part D claims by kind of drug, 2024
- Generic4,608 claims89%
- Brand-name550 claims11%
- Other41 claims1%
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
- Opioids11%590 of 5,199 claims
- Antibiotics1%52 of 5,199 claims
- Antipsychotics, patients 65 and over1%38 of 5,199 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: 4,4622024: 4,5582%
Drugs named by CMS: 102 in 2024, 103 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 M. Slack takes part in Medicare
Dr. Slack accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
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. David M. Slack received $21 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Slack from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $21.
Companies that paid Dr. Slack the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David M. Slack graduated from New York Medical College
Dr. Slack graduated from New York Medical College in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David M. 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 | 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) |
| 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. David M. 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. David M. Slack's NPI number?
Dr. David M. Slack's NPI number is 1205895554. It was assigned on March 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David M. Slack?
Dr. David M. Slack is an internist in Easthampton, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David M. Slack practice?
Dr. Slack practices at 238 Northampton St, Easthampton, MA 01027. Dr. Slack's primary practice is Valley Medical Group in Easthampton, Massachusetts. Dmand AI also links Dr. Slack to 1 hospital, 2 home health agencies and 1 group practice or clinic.
What is Dr. David M. Slack's office phone number?
The practice phone on file for Dr. Slack is (413) 774-6301.
What is Dr. David M. Slack's medical license number?
Dr. Slack holds Massachusetts license 72497.
Which hospitals is Dr. David M. Slack affiliated with?
Dr. Slack is affiliated with Baystate Medical Center. Dmand AI links Dr. Slack to 1 more hospital.
What medical group is Dr. David M. Slack part of?
Dr. Slack is linked to Valley Medical Group.
Does Dr. David M. Slack accept Medicare?
Yes. CMS data shows Dr. Slack billed Medicare for 5,935 services in 2024, and Dr. Slack accepts Medicare assignment.
How many Medicare patients does Dr. David M. Slack see?
CMS counts 695 Medicare patients who saw Dr. Slack in 2024, with an average age of 71.
What services does Dr. David M. Slack bill to Medicare?
In 2024, Dr. Slack's most billed Medicare services were surgery: heart and blood vessels (36415), lab and pathology test (80061) and lab and pathology test (80048).
Show 4 more questionsShow fewer questions
Where did Dr. David M. Slack go to medical school?
Dr. Slack graduated from New York Medical College in 1985.
What drugs does Dr. David M. Slack prescribe most?
In 2024 Medicare Part D data, Dr. Slack's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. David M. Slack received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Dr. Slack from 1 company from 2023 to 2023. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. David M. Slack been practicing?
Dr. Slack graduated from medical school in 1985, 41 years ago.
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