Dr. James Clifford Marshall , DO
Internal Medicine • Largo, FL
13121 Cimarron Cir N
Largo, FL 337744137
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. James Marshall is listed in NPPES under Internal Medicine.
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NPI assigned on September 7, 2006; this date does not establish years in practice.
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Published CMS data list 126 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 99213 — Established patient outpatient office visit: 56 service units.
- 93000 — Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report: 53 service units.
- 99214 — Established patient outpatient office visit: 17 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 14 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Eliquis (Apixaban) — 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 90% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: 475. Middle half: 96 to 6,024.
Fewer Part D prescriptions than 95% of clinicians listed under Internal Medicine in Florida (2024, 6,545 clinicians with data). Median for this group: 1,318. Middle half: 158 to 5,882.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,614 in 2018 to 126 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
13121 Cimarron Cir N
Largo, FL 337744137
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $7,970 in 2022
The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
Paid by Medicare
About $5,222 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022.
30-day fills
29 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$17,050 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Can order Medicare-covered services
CMS lists Dr. Marshall as eligible to order or refer durable medical equipment (DME) for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Largo and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 90% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: 475. Middle half: 96 to 6,024.
Fewer Part D prescriptions than 95% of clinicians listed under Internal Medicine in Florida (2024, 6,545 clinicians with data). Median for this group: 1,318. Middle half: 158 to 5,882.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: $25,517. Middle half: $2,506 to $326,939.
A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in Florida (2024, 6,545 clinicians with data). Median for this group: $86,865. Middle half: $8,159 to $434,445.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Marshall are from 2022.
96 active clinicians are listed under Internal Medicine with a practice address in Largo, FL (10,165 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Largo
7.3% of these 96 clinicians have the CMS telehealth indicator.
63.5% of these 96 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 95% from 2,614 in 2018 to 126 in 2022.
- 2018: 2,614
- 2019: 661
- 2020: 519
- 2021: 203
- 2022: 126
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Medicare-allowed amount
Medicare-allowed amount decreased 78% from $36,130 in 2018 to $7,970 in 2022.
- 2018: $36,130
- 2019: $18,934
- 2020: $13,543
- 2021: $9,260
- 2022: $7,970
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Paid by Medicare
Paid by Medicare decreased 81% from $28,142 in 2018 to $5,222 in 2022.
- 2018: $28,142
- 2019: $13,914
- 2020: $9,922
- 2021: $6,293
- 2022: $5,222
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 93% from 203 in 2020 to 14 in 2024.
- 2020: 203
- 2021: 133
- 2022: 128
- 2023: 40
- 2024: 14
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30-day fills
30-day fills decreased 94% from 489 in 2020 to 29 in 2024.
- 2020: 489
- 2021: 353
- 2022: 281
- 2023: 89
- 2024: 29
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Part D drug cost
Part D drug cost varied from year to year: $17,496 in 2020 and $17,050 in 2024.
- 2020: $17,496
- 2021: $36,074
- 2022: $49,294
- 2023: $29,794
- 2024: $17,050
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
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Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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56 | 22 | $116.00 | $90.03 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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53 | 17 | $48.00 | $14.24 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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17 | 14 | $176.00 | $127.83 |
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Eliquis | Apixaban | 14 | 880 | $17,049.65 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 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
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 13121 CIMARRON CIR N, LARGO, FL 337744137 (Tel: 7277761446)
Internal Medicine (license number reported to NPPES: WI 73941)
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 number reported to NPPES: FL OS6394)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Largo
- Dr. Sunil Pokharel, MD
- Dr. Sunit Srivastava, MD
- Dr. Jennifer Kudelko, DO
- Dr. Arun Murali, DO
- Sabita Bellur
- Dr. Elizabeth Pacer, MD
Mailing Address
Po Box 4577
Seminole, FL 337754577
Phone: 7275853610