Dr. John Howell Hamilton , MD
General Practice โข San Antonio, TX
111 Dallas St
San Antonio, TX 78205
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. John Hamilton is listed in NPPES under General Practice.
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NPI assigned on June 1, 2015; this date does not establish years in practice.
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Published CMS data list 311 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99285 โ Emergency department visit with high level of medical decision making: 102 service units.
- 93010 โ Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only: 94 service units.
- 99284 โ Emergency department visit with moderate level of medical decision making: 77 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 149 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Meloxicam โ 69 prescription fills, including refills.
- Ondansetron Odt (Ondansetron) โ 23 prescription fills, including refills.
- Nitrofurantoin Mono-Macro (Nitrofurantoin Monohyd/M-Cryst) โ 19 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 6 records in the table ยท 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 General Practice in San Antonio, TX (2024, 17 clinicians with data). Median for this group: 305. Middle half: 137 to 354.
Close to the middle for Medicare Part B services among clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: 341. Middle half: 100 to 1,551.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 435 in 2020 to 311 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
111 Dallas St
San Antonio, TX 78205
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Port St Lucie, FL. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 2 distinct group names: Comal Emergency Physicians Pllc; Sound Physicians Emergency Medicine Of Texas Pllc. 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
2015
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
216 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 โ by Provider, 2024.
Medicare-allowed amount
About $33,132 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 โ by Provider and Service, 2024.
Paid by Medicare
About $25,459 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 โ by Provider and Service, 2024.
30-day fills
150 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
$1,116 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2022
All general payments: $177.35 across 13 records.
By nature of payment
- Food and Beverage: $177.35 across 13 records.
Reporting-company totals
- ABBVIE INC.: $144.42 across 12 records.
- Ethicon Inc.: $32.93 across 1 record.
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 2022 (published June 30, 2026).
Years since graduation
11 years (graduated 2015)
CMS Doctors and Clinicians data list 2015 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
2015
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, โDoes your provider accept Medicare as full payment?โ
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. Hamilton 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. Hamilton 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 San Antonio and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under General Practice in San Antonio, TX (2024, 17 clinicians with data). Median for this group: 305. Middle half: 137 to 354.
Close to the middle for clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: 341. Middle half: 100 to 1,551.
Medicare-allowed amount
A higher Medicare-allowed amount than 65% of clinicians listed under General Practice in San Antonio, TX (2024, 17 clinicians with data). Median for this group: $18,268. Middle half: $13,506 to $38,424.
Close to the middle for clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: $28,596. Middle half: $8,918 to $83,485.
Paid by Medicare
A higher Medicare payment amount than 65% of clinicians listed under General Practice in San Antonio, TX (2024, 17 clinicians with data). Median for this group: $12,441. Middle half: $8,851 to $30,614.
Close to the middle for clinicians listed under General Practice in Texas (2024, 172 clinicians with data). Median for this group: $19,146. Middle half: $6,451 to $65,134.
Medicare Part D prescriptions
Fewer Part D prescriptions than 65% of clinicians listed under General Practice in San Antonio, TX (2024, 21 clinicians with data). Median for this group: 185. Middle half: 106 to 1,456.
Fewer Part D prescriptions than 65% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: 452. Middle half: 78 to 2,858.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under General Practice in San Antonio, TX (2024, 21 clinicians with data). Median for this group: $2,162. Middle half: $889 to $187,520.
A lower Part D drug cost than 70% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: $17,804. Middle half: $993 to $222,529.
91 active clinicians are listed under General Practice with a practice address in San Antonio, TX (1,066 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in San Antonio
2.2% of these 91 clinicians have the CMS telehealth indicator.
20.9% of these 91 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 29% from 435 in 2020 to 311 in 2024.
- 2020: 435
- 2021: 410
- 2022: 472
- 2023: 715
- 2024: 311
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Medicare-allowed amount
Medicare-allowed amount decreased 27% from $45,330 in 2020 to $33,132 in 2024.
- 2020: $45,330
- 2021: $44,815
- 2022: $50,000
- 2023: $79,822
- 2024: $33,132
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Paid by Medicare
Paid by Medicare decreased 28% from $35,152 in 2020 to $25,459 in 2024.
- 2020: $35,152
- 2021: $36,158
- 2022: $40,256
- 2023: $63,942
- 2024: $25,459
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 32% from 113 in 2020 to 149 in 2024.
- 2020: 113
- 2021: 89
- 2022: 107
- 2023: 176
- 2024: 149
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30-day fills
30-day fills increased 33% from 113 in 2020 to 150 in 2024.
- 2020: 113
- 2021: 89
- 2022: 107
- 2023: 179
- 2024: 150
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Part D drug cost
Part D drug cost went from $922 in 2020 to $1,116 in 2024.
- 2020: $922
- 2021: $657
- 2022: $1,385
- 2023: $1,643
- 2024: $1,116
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $268.54 in 2021 to $177.35 in 2022.
- 2021: $268.54
- 2022: $177.35
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2022), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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 2022 (payments made January 1 โ December 31, 2022): 13 records totaling $177.35.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Ethicon Inc. |
Food and Beverage
In-kind items and services
|
DERMABOND | General | $32.93 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $16.28 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $15.99 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $15.84 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $14.29 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $14.18 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $13.41 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $13.08 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $12.66 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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UBRELVY | General | $12.34 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $11.21 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $2.76 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $2.38 |
Source: CMS Open Payments, program year 2022, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017โ2023 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 โ by Provider and Service data, 2018โ2024; 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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99285
Emergency department visit with high level of medical decision making
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102 | 102 | $2349.31 | $169.17 |
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93010
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
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94 | 89 | $131.89 | $7.80 |
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99284
Emergency department visit with moderate level of medical decision making
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77 | 77 | $1518.59 | $116.72 |
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99291
Critical care, first 30-74 minutes
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26 | 26 | $3279.71 | $205.23 |
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99283
Emergency department visit with low level of medical decision making
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12 | 12 | $878.60 | $68.37 |
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 |
|---|---|---|---|---|---|
| Meloxicam | Meloxicam | 69 | 970 | $117.71 | 69 |
| Ondansetron Odt | Ondansetron | 23 | 228 | $385.02 | 22 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 19 | 133 | $223.64 | 19 |
| Clindamycin Hcl | Clindamycin Hcl | 15 | 126 | $118.03 | 15 |
| Prednisone | Prednisone | 12 | 60 | $17.29 | 12 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 11 | 269 | $254.12 | 11 |
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: 2024-11-27NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - EMERGENCY MEDICINE
I20240418001571
FL
7911266077
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
Comal Emergency Physicians Pllc
600 N Union Ave, New Braunfels, TX 781304194
Phone: 8306069111
Sound Physicians Emergency Medicine Of Texas Pllc
1020 S State Hwy 16, Fredericksburg, TX 786244471
Phone: 8309974353
Secondary Practice Locations
10198 Sw Village Pkwy Ste 105
Port St Lucie, FL 349872592
Phone: 7729344990
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner - Family
Family Nurse Practitioner
Internal Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Family Nurse Practitioner
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Emergency Medicine (license number reported to NPPES: TX R4233)
General Practice (license number reported to NPPES: FL ME165198)
Registered at 111 DALLAS ST, SAN ANTONIO, TX 78205 (Tel: 2102977000)
Registered at 15544 ESCARPMENT OAK, HELOTES, TX 780235126 (Tel: 9014093481)
Emergency Medicine (license number reported to NPPES: TX R4233)
NPI status registered as active in NPPES database
Registered at 910 MADISON AVE STE 1031, MEMPHIS, TN 381636828 (Tel: 9014485364)
Registered at 1281 N PARKWAY, MEMPHIS, TN 381046828
Recorded as JOHN HAMILTON, M. D.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other General Practices in San Antonio
- Dr. Lawrence Cohen, MD
- Dr. John Baeke, MD
- Dr. Luke Galindo, MD
- Dr. R Schwarz, MD
- Collin Rader
- Dr. Christine Contreras, MD
Mailing Address
15544 Escarpment Oak
Helotes, TX 780235126
Phone: 9014093481