Doctor profile · Federal record

Dr. Jason Slack, D.O.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Hagerstown, MD

  • NPI 1043692197
  • Accepts Medicare
  • 11 yrs in practice
  • Licensed in 3 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
11116 Medical Campus RD
Hagerstown, MD 217426710
(301) 790-8804
Additional location
1102 W 32Nd St
Joplin, MO 648043503
(417) 347-4616

Credentials & registration

NPPES · NUCC
NPI registered
June 2015 — 11 yrs on file
Profile last updated
December 29, 2023
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (3)
Maryland #H96459 · Kansas #05-40745 · Missouri #2015017143

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1043692197. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,231
Distinct HCPCS
7
Medicare allowed
$121,752
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 575 271 $77
99239 Hospital discharge day management, more than 30 minutes 248 242 $111
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 201 108 $112
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 131 128 $166
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 40 28 $49
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 23 23 $124
99497 Advance care planning, first 30 minutes 13 13 $71

In context: peer comparison

Among 11 peers in this city , average services per provider: 137. This provider delivers 9.0× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
126
Patients
80
Total drug cost
$6,407
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 23 14 $247
Cefdinir Generic 21 20 $281
Prednisone Generic 18 18 $62
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 15 15 $82
Metoprolol Tartrate Generic 14 13 $53
Furosemide Generic 13 0 $60
Eliquis (Apixaban) Brand 11 0 $5,478
Potassium Chloride Generic 11 0 $143

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Jason Slack's medical specialty?
Dr. Jason Slack practices Internal Medicine Physician in Hagerstown, MD.
Where does Dr. Jason Slack practice?
Dr. Jason Slack practices at 11116 Medical Campus RD, Hagerstown, MD 217426710. Office phone: 3017908804.
What is Dr. Jason Slack's NPI?
Dr. Jason Slack's National Provider Identifier (NPI) is 1043692197, issued by NPPES.
Does Dr. Jason Slack accept Medicare assignment?
Yes. Dr. Jason Slack accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jason Slack commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.