Dr. James Clifford Marshall , DO
Internal Medicine • Largo, FL
Professional Overview & Biography Verified Profile Summary
Dr. James Marshall, DO is a registered healthcare professional specializing in Internal Medicine in Largo, FL. Practice services are available at 13121 CIMARRON CIR N under active NPI credentials.
Frequently performed procedures and clinical services include established patient outpatient office visit, routine ekg using at least 12 leads including interpretation and report, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
13121 Cimarron Cir N
Largo, FL 337744137
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Largo, FL
Practicing in Largo, FL (10650 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
56 | 22 | $116.00 | $90.03 |
|
93000
Routine ekg using at least 12 leads including interpretation and report
|
53 | 17 | $48.00 | $14.24 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
17 | 14 | $176.00 | $127.83 |
Medical Specialties & State Licenses
CMS Verified: 2026-06-16NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 207RC0000X
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 13121 CIMARRON CIR N, LARGO, FL 337744137 (Tel: 7277761446)
Internal Medicine (License #73941 in WI)
NPI status registered as active in NPPES database
Registered at 12600 SEMINOLE BLVD, #A-3, LARGO, FL 337782201 (Tel: 7275853610)
Registered at PO BOX 4577, SEMINOLE, FL 337754577 (Tel: 7275853610)
Recorded as JAMES MARSHALL, DO
Internal Medicine (License #OS6394 in FL)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
Sign in to leave a review for Dr. James Marshall
Only verified registered users can submit ratings, post feedback, and upload facility photos.
NPI Administrative Meta
Mailing Address
Po Box 4577
Seminole, FL 337754577
Phone: 7275853610
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.