Dr. Michael Scott Marshall , MD
Internal Medicine • Cedar Hill, TX
950 E Belt Line Rd Ste 150
Cedar Hill, TX 751042424
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
Dr. Michael Marshall is listed in NPPES under Internal Medicine.
-
NPI assigned on February 15, 2006; this date does not establish years in practice.
-
Published CMS data list 1,454 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:
- 99214 — Established patient outpatient office visit: 463 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: 326 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 114 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 12 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 8,038 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 — 651 prescription fills, including refills.
- Rosuvastatin Calcium — 384 prescription fills, including refills.
- Amlodipine Besylate — 362 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 120 records in the table · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: 645. Middle half: 277 to 1,322.
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 1,242 in 2020 to 1,454 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
950 E Belt Line Rd Ste 150
Cedar Hill, TX 751042424
CMS Doctors and Clinicians lists 2 distinct group names: Green Oaks Physical Therapy Limited Partnership; Medhealth. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Texas Southwestern Medical School At Dallas
1985
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
248 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 $126,938 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 $103,699 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
20,192 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
$1,704,616 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: $346.87 across 18 records.
By nature of payment
- Food and Beverage: $346.87 across 18 records.
Reporting-company totals (3 largest of 11)
- Novo Nordisk Inc: $76.12 across 4 records.
- Bayer Healthcare Pharmaceuticals Inc.: $50.49 across 2 records.
- Astellas Pharma US Inc: $34.79 across 2 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
41 years (graduated 1985)
CMS Doctors and Clinicians data list 1985 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. Marshall 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. Marshall 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 Cedar Hill and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: 645. Middle half: 277 to 1,322.
Too few clinicians listed under Internal Medicine in Cedar Hill have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: $61,221. Middle half: $27,420 to $115,826.
Too few clinicians listed under Internal Medicine in Cedar Hill have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 75% of clinicians listed under Internal Medicine in Texas (2024, 5,423 clinicians with data). Median for this group: $47,501. Middle half: $20,446 to $90,051.
Too few clinicians listed under Internal Medicine in Cedar Hill have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Texas (2024, 5,674 clinicians with data). Median for this group: 828. Middle half: 121 to 4,824.
Too few clinicians listed under Internal Medicine in Cedar Hill have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Texas (2024, 5,674 clinicians with data). Median for this group: $64,859. Middle half: $4,211 to $436,775.
Too few clinicians listed under Internal Medicine in Cedar Hill have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Internal Medicine with a practice address in Cedar Hill, TX (9,191 in Texas).
Addresses are self-reported to NPPES and may be out of date.
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 17% from 1,242 in 2020 to 1,454 in 2024.
- 2020: 1,242
- 2021: 1,031
- 2022: 938
- 2023: 1,007
- 2024: 1,454
-
Medicare-allowed amount
Medicare-allowed amount increased 23% from $103,117 in 2020 to $126,938 in 2024.
- 2020: $103,117
- 2021: $99,166
- 2022: $91,162
- 2023: $102,125
- 2024: $126,938
-
Paid by Medicare
Paid by Medicare increased 32% from $78,481 in 2020 to $103,699 in 2024.
- 2020: $78,481
- 2021: $75,584
- 2022: $69,045
- 2023: $79,303
- 2024: $103,699
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 71% from 4,688 in 2020 to 8,038 in 2024.
- 2020: 4,688
- 2021: 4,324
- 2022: 5,136
- 2023: 10,353
- 2024: 8,038
-
30-day fills
30-day fills increased 86% from 10,863 in 2020 to 20,192 in 2024.
- 2020: 10,863
- 2021: 11,004
- 2022: 12,859
- 2023: 26,447
- 2024: 20,192
-
Part D drug cost
Part D drug cost increased 490% from $288,725 in 2020 to $1,704,616 in 2024.
- 2020: $288,725
- 2021: $357,838
- 2022: $650,567
- 2023: $2,467,718
- 2024: $1,704,616
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $67.50 in 2020 to $346.87 in 2025.
- 2020: $67.50
- 2022: $102.48
- 2023: $319.89
- 2024: $324.36
- 2025: $346.87
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): 18 records totaling $346.87.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
PREVNAR 20 | General | $28.69 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
|
Kerendia | General | $25.34 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
|
Kerendia | General | $25.15 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
TZIELD | General | $24.19 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $23.38 |
| SHIELD THERAPEUTICS INC |
Food and Beverage
In-kind items and services
|
ACCRUFER | General | $20.00 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $18.69 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $18.45 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
BREZTRI | General | $18.35 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $17.11 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $16.94 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
|
KRYSTEXXA | General | $16.59 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
|
Veozah | General | $16.34 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
JARDIANCE | General | $16.27 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
Cologuard Collection Kit | General | $16.12 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
|
BREZTRI | General | $15.88 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
|
MOUNJARO | General | $15.44 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
AREXVY | General | $13.94 |
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 |
|---|---|---|---|---|
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
463 | 207 | $330.00 | $124.79 |
|
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
|
326 | 165 | $40.00 | $15.82 |
|
G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
|
114 | 114 | $337.00 | $127.68 |
|
G0008
Administration of influenza virus vaccine
|
101 | 95 | $34.00 | $32.05 |
|
90662
Influenza vaccine split virus, preservative free
|
100 | 94 | $141.84 | $81.03 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
87 | 77 | $233.00 | $87.47 |
|
90677
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
|
85 | 85 | $748.00 | $281.64 |
|
G0009
Administration of pneumococcal vaccine
|
79 | 79 | $46.00 | $32.05 |
|
93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
|
35 | 31 | $36.00 | $14.13 |
|
99497
Advance care planning, first 30 minutes
|
27 | 27 | $216.00 | $78.47 |
|
83036
Hemoglobin a1c level
|
19 | 17 | $18.00 | $9.10 |
|
87428
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
|
18 | 18 | $171.00 | $68.88 |
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 | 651 | 57,737 | $6,347.36 | 208 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 384 | 33,291 | $4,619.76 | 132 |
| Amlodipine Besylate | Amlodipine Besylate | 362 | 31,920 | $2,554.07 | 124 |
| Ozempic | Semaglutide | 259 | 10,544 | $322,096.94 | 81 |
| Jardiance | Empagliflozin | 258 | 15,163 | $288,559.34 | 71 |
| Metformin Hcl | Metformin Hcl | 241 | 21,700 | $1,763.20 | 86 |
| Metoprolol Succinate | Metoprolol Succinate | 233 | 19,321 | $3,446.84 | 68 |
| Levothyroxine Sodium | Levothyroxine Sodium | 226 | 19,393 | $2,368.37 | 70 |
| Mounjaro | Tirzepatide | 224 | 7,653 | $279,501.27 | 59 |
| Lisinopril | Lisinopril | 205 | 18,400 | $1,301.47 | 67 |
| Ezetimibe | Ezetimibe | 186 | 16,293 | $2,648.12 | 58 |
| Metformin Hcl Er | Metformin Hcl | 180 | 15,100 | $1,660.66 | 65 |
| Losartan Potassium | Losartan Potassium | 175 | 15,657 | $2,019.96 | 68 |
| Pantoprazole Sodium | Pantoprazole Sodium | 159 | 11,545 | $1,531.44 | 54 |
| Escitalopram Oxalate | Escitalopram Oxalate | 156 | 12,289 | $1,971.14 | 47 |
| Tamsulosin Hcl | Tamsulosin Hcl | 152 | 12,889 | $1,500.38 | 51 |
| Chlorthalidone | Chlorthalidone | 143 | 11,875 | $3,040.93 | 41 |
| Pravastatin Sodium | Pravastatin Sodium | 140 | 11,610 | $1,639.28 | 42 |
| Omeprazole | Omeprazole | 134 | 10,785 | $1,870.91 | 40 |
| Farxiga | Dapagliflozin Propanediol | 118 | 6,580 | $114,428.22 | 30 |
| Valsartan | Valsartan | 116 | 10,575 | $3,100.45 | 37 |
| Montelukast Sodium | Montelukast Sodium | 107 | 8,917 | $1,154.24 | 30 |
| Allopurinol | Allopurinol | 102 | 8,980 | $1,066.65 | 35 |
| Duloxetine Hcl | Duloxetine Hcl | 100 | 8,070 | $3,009.51 | 29 |
| Repatha Sureclick | Evolocumab | 98 | 3,696 | $72,190.94 | 17 |
(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
Self-certified to NPPES: 2023-03-14NUCC 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: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20100210000678
TX
8820131014
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Green Oaks Physical Therapy Limited Partnership
2000 Fm, Midlothian, TX 760656559
Phone: 4698562476
Medhealth
3000 Blackburn St, Dallas, TX 752042217
Phone: 2145998624
Medhealth
5224 S State Hwy 360, Grand Prairie, TX 750520950
Phone: 9725220691
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 - Sports Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Primary Care
Family Nurse Practitioner (Board Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 950 E BELT LINE RD STE 150, CEDAR HILL, TX 751042424 (Tel: 9722917863)
Registered at 950 E BELT LINE RD STE 150, CEDAR HILL, TX 751042424 (Tel: 9722917863)
Pediatrics (license number reported to NPPES: TX 42970)
NPI status registered as active in NPPES database
Registered at 326 COOPER ST, CEDAR HILL, TX 751042628 (Tel: 9722917863)
Registered at 3400 W WHEATLAND RD, PAV III STE #360, DALLAS, TX 752374418 (Tel: 2148844700)
Recorded as MICHAEL MARSHALL, M.D.
Internal Medicine (license number reported to NPPES: TX H0602)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Cedar Hill
- Dr. Karuna Vangala, MD
- Dr. Cecil Bailey, MD
- Dr. Donald Phillips, MD
- Dr. Penny West, MD
- Dr. Sam Hankins, MD
Mailing Address
950 E Belt Line Rd Ste 150
Cedar Hill, TX 751042424
Phone: 9722917863