Marc Chapman, M.D.
NPI 1679578777 · Internal Medicine Physician · Euless, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Chapman, M.D. is a Internal Medicine Physician provider in Euless, TX (NPI 1679578777).
Provider details
- NPI number
- 1679578777
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- L1000 (TX)
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
21 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
1,282 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 265 | $126 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 229 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 215 | $89 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 134 | $19 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 69 | $9 |
| Administration of Influenza Virus VaccineG0008 | 60 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 159 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 878 | 227 |
| Levothyroxine Sodium | 572 | 138 |
| Amlodipine Besylate | 493 | 139 |
| Metformin Hcl | 422 | 121 |
| Losartan Potassium | 387 | 108 |
| Pantoprazole Sodium | 345 | 102 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$422 across 20 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
- 2005-06-15
- Last updated
- 2011-03-11
Frequently asked questions
- What is Marc Chapman's NPI number?
- Marc Chapman's National Provider Identifier (NPI) is 1679578777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Chapman's specialty?
- Marc Chapman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Chapman located?
- Marc Chapman's practice location on file with NPPES is 469 Westpark Way, Euless, TX 76040-3957.
- What is Marc Chapman's phone number?
- The practice phone number listed in the NPPES registry for Marc Chapman is (817) 283-2888.
- Does Marc Chapman accept Medicare?
- Marc Chapman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Chapman's NPI active?
- Yes — Marc Chapman's NPI (1679578777) is active in the NPPES registry as of the last update on 2011-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.