What is Mark Seamon's NPI number?

Mark Seamon's National Provider Identifier (NPI) is 1184780546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Seamon's specialty?

Mark Seamon is listed in the NPPES registry with a primary specialty of Surgical Critical Care Physician (Allopathic & Osteopathic Physicians).

Where is Mark Seamon located?

Mark Seamon's practice location on file with NPPES is 51 North 39th Street, Philadelphia, PA 19104-2640.

What is Mark Seamon's phone number?

The practice phone number listed in the NPPES registry for Mark Seamon is (215) 349-8310.

Does Mark Seamon accept Medicare?

Mark Seamon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Seamon's NPI active?

Yes — Mark Seamon's NPI (1184780546) is active in the NPPES registry as of the last update on 2026-05-28.

IndividualActiveAccepts Medicare

Mark Seamon, MD

NPI 1184780546 · Surgical Critical Care Physician · Philadelphia, PA

Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Mark Seamon, MD is a Surgical Critical Care Physician provider in Philadelphia, PA (NPI 1184780546).

Provider details

NPI number: 1184780546
Entity type: Individual
Primary specialty: Surgical Critical Care PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: MD424459 (PA)

Specialties & taxonomies

Surgical Critical Care PhysicianPrimary2086S0102XLicense MD424459 (PA)
Allopathic & Osteopathic Physicians
Trauma Surgery Physician2086S0127XLicense MD424459 (PA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(77/100 index)

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
169 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	59	$216
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	55	$80
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233	38	$120
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	17	$175

Typical Medicare-allowed amounts for these services range $80–$216 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$177 across 3 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

51 North 39th Street

Philadelphia, PA 19104-2640

Phone: (215) 349-8310

Fax: (215) 724-3560

Street-level locationGet directions

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Mailing address