Dr. Mark C Stine , DO
Internal Medicine • Largo, FL
13787 Belcher Rd S, Suite 100
Largo, FL 337714065
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on June 7, 2006; this date does not establish years in practice.
-
Published CMS data list 3,283 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 99309 — Subsequent nursing facility care with moderate level of medical decision making, per day: 1,727 service units.
- 99214 — Established patient outpatient office visit: 343 service units.
- G2211 — Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's: 320 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 16 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 6,275 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.
-
Published Part D records, 2024:
- Atorvastatin Calcium — 312 prescription fills, including refills.
- Amlodipine Besylate — 247 prescription fills, including refills.
- Rosuvastatin Calcium — 218 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 all 136 records in the table · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: 742. Middle half: 462 to 1,224.
More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: 687. Middle half: 277 to 1,489.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 1,184 in 2020 to 3,283 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
13787 Belcher Rd S
Suite 100
Largo, FL 337714065
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Nova Southeastern College Of Osteo Medicine
1988
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
466 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $315,486 in 2024
The total amount Medicare approved for these services in 2024. 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, 2024.
Paid by Medicare
About $244,076 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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, 2024.
30-day fills
13,792 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
$332,980 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.
Open Payments general payments, program year 2025
All general payments: $459.14 across 22 records.
By nature of payment
- Food and Beverage: $459.14 across 22 records.
Reporting-company totals (3 largest of 8)
- Gilead Sciences, Inc.: $125.94 across 4 records.
- ABBVIE INC.: $115.67 across 6 records.
- Eli Lilly and Company: $71.21 across 4 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
38 years (graduated 1988)
CMS Doctors and Clinicians data list 1988 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Stine has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Stine as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services 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 B services
More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: 742. Middle half: 462 to 1,224.
More Medicare Part B services than 85% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: 687. Middle half: 277 to 1,489.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: $76,808. Middle half: $55,843 to $114,169.
A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: $68,256. Middle half: $27,620 to $138,398.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Internal Medicine in Largo, FL (2024, 55 clinicians with data). Median for this group: $61,364. Middle half: $44,673 to $88,924.
A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: $52,728. Middle half: $20,807 to $107,475.
Medicare Part D prescriptions
More Part D prescriptions than 75% 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.
More Part D prescriptions than 75% 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
A higher Part D drug cost than 75% of 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 higher Part D drug cost than 65% 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.
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.
-
Medicare Part B services
Medicare Part B services increased 177% from 1,184 in 2020 to 3,283 in 2024.
- 2020: 1,184
- 2021: 916
- 2022: 775
- 2023: 852
- 2024: 3,283
-
Medicare-allowed amount
Medicare-allowed amount increased 200% from $105,293 in 2020 to $315,486 in 2024.
- 2020: $105,293
- 2021: $80,596
- 2022: $70,947
- 2023: $77,133
- 2024: $315,486
-
Paid by Medicare
Paid by Medicare increased 220% from $76,277 in 2020 to $244,076 in 2024.
- 2020: $76,277
- 2021: $57,421
- 2022: $48,852
- 2023: $54,680
- 2024: $244,076
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 39% from 4,521 in 2020 to 6,275 in 2024.
- 2020: 4,521
- 2021: 4,374
- 2022: 4,266
- 2023: 4,877
- 2024: 6,275
-
30-day fills
30-day fills increased 47% from 9,363 in 2020 to 13,792 in 2024.
- 2020: 9,363
- 2021: 9,477
- 2022: 9,447
- 2023: 10,648
- 2024: 13,792
-
Part D drug cost
Part D drug cost increased 59% from $209,884 in 2020 to $332,980 in 2024.
- 2020: $209,884
- 2021: $187,575
- 2022: $199,669
- 2023: $233,759
- 2024: $332,980
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $375.92 in 2021 to $459.14 in 2025.
- 2021: $375.92
- 2022: $494.67
- 2023: $1,039.20
- 2024: $746.90
- 2025: $459.14
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 22 records totaling $459.14.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
— | General | $32.99 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
— | General | $32.18 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
— | General | $31.62 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
— | General | $29.15 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $29.02 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
ELIQUIS | General | $24.01 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $23.24 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
AIRSUPRA | General | $20.66 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
MOUNJARO | General | $20.14 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $19.85 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $18.54 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $17.89 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $17.64 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
KISUNLA | General | $17.36 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
MOUNJARO | General | $17.26 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $17.18 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
MOUNJARO | General | $16.45 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $16.04 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
ELIQUIS | General | $15.03 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
VRAYLAR | General | $14.58 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
|
FREESTYLE LIBRE 3 | General | $14.20 |
| Abbott Laboratories |
Food and Beverage
In-kind items and services
|
FREESTYLE LIBRE 3 | General | $14.11 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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, 2017–2024; 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 |
|---|---|---|---|---|
|
99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
|
1,727 | 284 | $237.69 | $104.85 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
343 | 135 | $195.00 | $123.85 |
|
G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
|
320 | 136 | $32.00 | $16.08 |
|
99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
|
188 | 94 | $181.24 | $72.46 |
|
36415
Insertion of needle into vein for collection of blood sample
|
148 | 105 | $10.00 | $8.65 |
|
99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
|
136 | 86 | $273.00 | $175.03 |
|
99306
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more
|
123 | 108 | $437.15 | $177.73 |
|
G0444
Annual depression screening, 5 to 15 minutes
|
98 | 98 | $28.00 | $18.00 |
|
99316
Nursing facility discharge management, more than 30 minutes
|
59 | 56 | $274.97 | $127.93 |
|
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
36 | 36 | $198.00 | $125.89 |
|
99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
|
26 | 26 | $336.00 | $215.92 |
|
99310
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes
|
23 | 19 | $350.23 | $149.97 |
|
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
17 | 14 | $23.00 | $13.89 |
|
99305
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes
|
14 | 14 | $337.52 | $130.08 |
|
69209
Removal of impacted ear wax by washing
|
13 | 11 | $22.00 | $14.95 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
12 | 11 | $137.00 | $88.17 |
Source: CMS Part B by Provider and Service, 2024; 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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 312 | 26,069 | $2,305.46 | 97 |
| Amlodipine Besylate | Amlodipine Besylate | 247 | 20,310 | $910.74 | 69 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 218 | 17,449 | $1,888.12 | 67 |
| Levothyroxine Sodium | Levothyroxine Sodium | 206 | 17,293 | $2,473.63 | 60 |
| Pantoprazole Sodium | Pantoprazole Sodium | 199 | 16,555 | $1,502.34 | 72 |
| Lisinopril | Lisinopril | 198 | 16,452 | $1,329.51 | 56 |
| Losartan Potassium | Losartan Potassium | 166 | 14,546 | $1,144.95 | 52 |
| Prednisone | Prednisone | 144 | 1,207 | $267.35 | 87 |
| Metformin Hcl | Metformin Hcl | 141 | 10,910 | $635.87 | 42 |
| Hydrochlorothiazide | Hydrochlorothiazide | 133 | 11,784 | $278.54 | 37 |
| Alprazolam | Alprazolam | 121 | 3,368 | $720.41 | 33 |
| Tamsulosin Hcl | Tamsulosin Hcl | 121 | 10,170 | $1,343.58 | 38 |
| Gabapentin | Gabapentin | 111 | 6,344 | $1,073.53 | 34 |
| Eliquis | Apixaban | 111 | 5,010 | $94,678.71 | 23 |
| Metoprolol Succinate | Metoprolol Succinate | 107 | 9,079 | $898.47 | 34 |
| Azithromycin | Azithromycin | 102 | 747 | $620.49 | 78 |
| Omeprazole | Omeprazole | 102 | 7,923 | $702.83 | 30 |
| Tramadol Hcl | Tramadol Hcl | 95 | 2,529 | $739.57 | 22 |
| Zolpidem Tartrate | Zolpidem Tartrate | 92 | 3,020 | $253.74 | 28 |
| Potassium Chloride | Potassium Chloride | 91 | 6,030 | $1,022.50 | 35 |
| Trazodone Hcl | Trazodone Hcl | 91 | 6,930 | $802.47 | 27 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 89 | 4,362 | $5,498.69 | 36 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 88 | 2,479 | $1,965.19 | 20 |
| Carvedilol | Carvedilol | 85 | 6,340 | $589.93 | 20 |
| Clopidogrel | Clopidogrel Bisulfate | 83 | 6,202 | $726.05 | 24 |
(top 25 shown)
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
NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20040804001598
FL
5294706917
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History
NPI enumerated June 07, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Largo
- Dr. Joseph Rosin, DO
- Mariya Milko
- Andi Canhasi
- Dr. Riad Bankusli, MD
- Dr. Stephen Mayper, MD
- Dr. Michael Nicoula, MD
Mailing Address
13787 Belcher Rd S, Suite 100
Largo, FL 337714065
Phone: 7275359899