Mark Heinsohn, MD
NPI 1457338014 · Internal Medicine Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Heinsohn, MD is a Internal Medicine Physician provider in Chattanooga, TN (NPI 1457338014).
Provider details
- NPI number
- 1457338014
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 24450 (TN)
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
20 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
6,746 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 1,317 | $167 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,230 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 1,130 | $6 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 521 | $117 |
| X-Ray of Chest, 2 Views71046 | 442 | $30 |
| Automated Urinalysis Test81003 | 404 | $2 |
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 |
|---|---|---|
| Levothyroxine Sodium | 512 | 129 |
| Rosuvastatin Calcium | 504 | 146 |
| Losartan Potassium | 468 | 137 |
| Amlodipine Besylate | 468 | 145 |
| Omeprazole | 442 | 137 |
| Gabapentin | 415 | 71 |
| Sertraline Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,107 across 72 records (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
- 2005-12-27
- Last updated
- 2010-05-06
Frequently asked questions
- What is Mark Heinsohn's NPI number?
- Mark Heinsohn's National Provider Identifier (NPI) is 1457338014, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Heinsohn's specialty?
- Mark Heinsohn is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Heinsohn located?
- Mark Heinsohn's practice location on file with NPPES is 605 Glenwood Dr, Chattanooga, TN 37404-1108.
- What is Mark Heinsohn's phone number?
- The practice phone number listed in the NPPES registry for Mark Heinsohn is (423) 629-7220.
- Does Mark Heinsohn accept Medicare?
- Mark Heinsohn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Heinsohn's NPI active?
- Yes — Mark Heinsohn's NPI (1457338014) is active in the NPPES registry as of the last update on 2010-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.