Marcus Walton, M.D.
NPI 1295962603 · Critical Care Medicine (Internal Medicine) Physician · Portsmouth, VA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus Walton, M.D. is a Critical Care Medicine (Internal Medicine) Physician provider in Portsmouth, VA (NPI 1295962603).
Provider details
- NPI number
- 1295962603
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Military Health Care Provider171000000X
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
184 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 74 | $210 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 28 | $116 |
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 27 | $73 |
| Anesthesia for Other Procedure on Upper Abdomen00790 | 18 | $170 |
| Anesthesia for Insertion of Permanent Heart Pacemaker00530 | 13 | $120 |
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 12 | $151 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$26 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
Additional practice locations (2)
- 10131 Forest Hill BlvdWellington, FL 33414-6156Phone: (561) 766-1300Fax: (561) 693-0539
- 1000 Johnson Fy Rd NeAtlanta, GA 30342-1606Phone: (404) 851-8000Fax: (404) 303-3759
Registry dates
- Enumerated
- 2009-06-12
- Last updated
- 2022-01-04
- Certified
- 2021-04-27
Frequently asked questions
- What is Marcus Walton's NPI number?
- Marcus Walton's National Provider Identifier (NPI) is 1295962603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Walton's specialty?
- Marcus Walton is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Marcus Walton located?
- Marcus Walton's practice location on file with NPPES is 620 Jhn Paul Jns Cir, Portsmouth, VA 23708-2111.
- What is Marcus Walton's phone number?
- The practice phone number listed in the NPPES registry for Marcus Walton is (757) 953-3149.
- Does Marcus Walton accept Medicare?
- Marcus Walton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcus Walton's NPI active?
- Yes — Marcus Walton's NPI (1295962603) is active in the NPPES registry as of the last update on 2022-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.