Dr. William Isaac Feingold , DO
Internal Medicine • Dallas, TX
3600 Gaston Ave, Wadley 1059
Dallas, TX 752461800
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. William Feingold is listed in NPPES under Internal Medicine.
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NPI assigned on April 29, 2013; this date does not establish years in practice.
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Published CMS data list 443 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.
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Published Part B service records, 2024:
- 99233 — Subsequent hospital care with moderate levelof medical decision making: 168 service units.
- 99232 — Subsequent hospital care with moderate levelof medical decision making: 149 service units.
- 99239 — Hospital discharge day management: 49 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 7 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 12 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:
- Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) — 12 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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Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Dallas, TX (2024, 592 clinicians with data). Median for this group: 573. Middle half: 263 to 1,183.
Fewer Medicare Part B services than 60% 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.
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Medicare Part B services went from 562 in 2020 to 443 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
3600 Gaston Ave
Wadley 1059
Dallas, TX 752461800
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Healthtexas Provider Network. 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
Philadelphia College Of Osteopathic Medicine
2013
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
242 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 $44,263 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 $34,809 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
12 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
$84 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: $1,162.52 across 14 records.
By nature of payment
- Food and Beverage: $1,162.52 across 14 records.
Reporting-company totals (3 largest of 9)
- AOP Health US, LLC: $884.92 across 1 record.
- Salix Pharmaceuticals, a division of Bausch Health US, LLC: $63.69 across 3 records.
- AstraZeneca Pharmaceuticals LP: $63.06 across 3 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
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 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
2013
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?”
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.
Enrolled in Medicare (PECOS)
Dr. Feingold 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. Feingold 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 Dallas and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Internal Medicine in Dallas, TX (2024, 592 clinicians with data). Median for this group: 573. Middle half: 263 to 1,183.
Fewer Medicare Part B services than 60% 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.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Dallas, TX (2024, 592 clinicians with data). Median for this group: $56,935. Middle half: $25,733 to $106,224.
A lower Medicare-allowed amount than 60% 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.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Dallas, TX (2024, 592 clinicians with data). Median for this group: $43,400. Middle half: $19,904 to $85,063.
A lower Medicare payment amount than 60% 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.
Medicare Part D prescriptions
Fewer Part D prescriptions than 95% of clinicians listed under Internal Medicine in Dallas, TX (2024, 566 clinicians with data). Median for this group: 584. Middle half: 95 to 3,585.
Fewer Part D prescriptions than 95% 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.
Part D drug cost
A lower Part D drug cost than 95% of clinicians listed under Internal Medicine in Dallas, TX (2024, 566 clinicians with data). Median for this group: $48,722. Middle half: $4,422 to $303,414.
A lower 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.
956 active clinicians are listed under Internal Medicine with a practice address in Dallas, TX (9,191 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dallas
20.8% of these 956 clinicians have the CMS telehealth indicator.
64.6% of these 956 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 21% from 562 in 2020 to 443 in 2024.
- 2020: 562
- 2021: 434
- 2022: 468
- 2023: 393
- 2024: 443
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Medicare-allowed amount
Medicare-allowed amount decreased 24% from $57,903 in 2020 to $44,263 in 2024.
- 2020: $57,903
- 2021: $42,133
- 2022: $46,163
- 2023: $35,377
- 2024: $44,263
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Paid by Medicare
Paid by Medicare decreased 25% from $46,467 in 2020 to $34,809 in 2024.
- 2020: $46,467
- 2021: $35,213
- 2022: $36,184
- 2023: $27,746
- 2024: $34,809
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 69% from 39 in 2015 to 12 in 2024.
- 2015: 39
- 2016: 27
- 2021: 11
- 2024: 12
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30-day fills
30-day fills decreased 73% from 45 in 2015 to 12 in 2024.
- 2015: 45
- 2016: 29
- 2021: 13
- 2024: 12
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Part D drug cost
Part D drug cost decreased 97% from $3,155 in 2015 to $84 in 2024.
- 2015: $3,155
- 2016: $7,365
- 2021: $50
- 2024: $84
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $19.44 in 2021 to $1,162.52 in 2025.
- 2021: $19.44
- 2022: $415.34
- 2023: $448.02
- 2024: $612.57
- 2025: $1,162.52
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): 14 records totaling $1,162.52.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AOP Health US, LLC |
Food and Beverage
In-kind items and services
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Rapiblyk | General | $884.92 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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ELIQUIS | General | $26.41 |
| Bristol Myers Squibb Company |
Food and Beverage
Cash or cash equivalent
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ELIQUIS | General | $25.20 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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ULTOMIRIS | General | $25.15 |
| Ferring Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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REBYOTA | General | $24.76 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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ELIQUIS | General | $24.44 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
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XIFAXAN | General | $23.05 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
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XIFAXAN | General | $23.05 |
| ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) |
Food and Beverage
Cash or cash equivalent
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LifeVest | General | $21.05 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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ULTOMIRIS | General | $20.46 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC |
Food and Beverage
In-kind items and services
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XIFAXAN | General | $17.59 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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ULTOMIRIS | General | $17.45 |
| Melinta Therapeutics, LLC |
Food and Beverage
In-kind items and services
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Rezzayo | General | $15.22 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $13.77 |
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 |
|---|---|---|---|---|
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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168 | 117 | $267.68 | $114.83 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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149 | 91 | $186.19 | $76.37 |
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99239
Hospital discharge day management, more than 30 minutes
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49 | 48 | $275.10 | $107.52 |
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99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
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28 | 28 | $517.48 | $168.24 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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21 | 15 | $100.71 | $48.09 |
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G0316
Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th
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16 | 13 | $52.51 | $29.57 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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12 | 12 | $335.33 | $177.48 |
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 |
|---|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 12 | 72 | $83.63 | 12 |
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: 2022-03-31NUCC 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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20170120000642
TX
8325358617
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
Healthtexas Provider Network
3500 Gaston Ave, Dallas, TX 752462017
Phone: 9728176100
Healthtexas Provider Network
4001 Worth St, Dallas, TX 752461608
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Hospitalist
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Career & Practice History
NPI enumerated April 29, 2013.
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 Dallas
- Dr. Danial Soleja, MD
- Dr. Leslie Cler, MD
- Farzan Jafri
- Juan Avila
- Dr. Boyd Lyles, MD
- Dr. Henia Abid, DO
Mailing Address
3600 Gaston Ave, Wadley 1059
Dallas, TX 752461800
Phone: 2148203000