J Karst, M.D.
NPI 1194759662 · Internal Medicine Physician · Montgomery, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
J Karst, M.D. is a Internal Medicine Physician provider in Montgomery, AL (NPI 1194759662).
Provider details
- NPI number
- 1194759662
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13546 (AL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,971 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 602 | $51 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 574 | $57 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 523 | $82 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 360 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 352 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 192 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 769 | 208 |
| Amlodipine Besylate | 716 | 178 |
| Alprazolam | 495 | 71 |
| Levothyroxine Sodium | 431 | 111 |
| Pantoprazole Sodium | 395 | 101 |
| Losartan Potassium | 333 | 91 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-10
- Last updated
- 2024-03-08
- Certified
- 2024-03-08
Frequently asked questions
- What is J Karst's NPI number?
- J Karst's National Provider Identifier (NPI) is 1194759662, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is J Karst's specialty?
- J Karst is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is J Karst located?
- J Karst's practice location on file with NPPES is 4485 Atlanta Hwy, Montgomery, AL 36109-3102.
- What is J Karst's phone number?
- The practice phone number listed in the NPPES registry for J Karst is (334) 272-4302.
- Does J Karst accept Medicare?
- J Karst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is J Karst's NPI active?
- Yes — J Karst's NPI (1194759662) is active in the NPPES registry as of the last update on 2024-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.