Mark Womack, M.D.
NPI 1689887788 · Hematology & Oncology Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Womack, M.D. is a Hematology & Oncology Physician provider in Chattanooga, TN (NPI 1689887788).
Provider details
- NPI number
- 1689887788
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD0000047306 (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
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
13,432 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 2,010 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,642 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,526 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 645 | $117 |
| Gammaglobulin (immune System Protein) Measurement82784 | 507 | $9 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 440 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 140 | 33 |
| Abiraterone Acetate | 116 | 18 |
| Prochlorperazine Maleate | 94 | 54 |
| Apixabanbrand: Eliquis | 84 | 24 |
| Ondansetron Hcl | 80 | 40 |
| Acyclovir | 69 | 17 |
| Lenalidomidebrand: Revlimid | 68 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$92 across 4 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
- 2007-05-07
- Last updated
- 2013-01-28
Frequently asked questions
- What is Mark Womack's NPI number?
- Mark Womack's National Provider Identifier (NPI) is 1689887788, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Womack's specialty?
- Mark Womack is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Womack located?
- Mark Womack's practice location on file with NPPES is 605 Glenwood Drive, Chattanooga, TN 37404-1130.
- What is Mark Womack's phone number?
- The practice phone number listed in the NPPES registry for Mark Womack is (423) 698-1844.
- Does Mark Womack accept Medicare?
- Mark Womack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Womack's NPI active?
- Yes — Mark Womack's NPI (1689887788) is active in the NPPES registry as of the last update on 2013-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.