Sergio Hernandez , PA-C
Physician Assistant • San Antonio, TX
20821 Us Highway 281 N Ste 122
San Antonio, TX 782587595
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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Sergio Hernandez is listed in NPPES under Physician Assistant.
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NPI assigned on April 12, 2017; this date does not establish years in practice.
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Published CMS data list 2,934 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:
- J1010 — Injection, methylprednisolone acetate, 1 mg: 1,561 service units.
- 99214 — Established patient outpatient office visit: 359 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 278 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 21 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 2,850 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:
- Rosuvastatin Calcium — 160 prescription fills, including refills.
- Losartan Potassium — 152 prescription fills, including refills.
- Lisinopril — 109 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 77 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 316 clinicians with data). Median for this group: 225. Middle half: 93 to 571.
More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Texas (2024, 4,400 clinicians with data). Median for this group: 211. Middle half: 76 to 593.
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 994 in 2020 to 2,934 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
20821 Us Highway 281 N Ste 122
San Antonio, TX 782587595
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: Physician Primecare, Inc. 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
2016
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
499 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 $97,450 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 $78,233 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
5,928 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
$153,576 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)
Fewer than 11 payment records totaling $12.38 in 2022
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2022.
Years since graduation
10 years (graduated 2016)
CMS Doctors and Clinicians data list 2016 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
2017
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)
Sergio Hernandez 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 Sergio Hernandez 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
More Medicare Part B services than 95% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 316 clinicians with data). Median for this group: 225. Middle half: 93 to 571.
More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Texas (2024, 4,400 clinicians with data). Median for this group: 211. Middle half: 76 to 593.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 316 clinicians with data). Median for this group: $15,261. Middle half: $7,606 to $33,983.
A higher Medicare-allowed amount than 90% of clinicians listed under Physician Assistant in Texas (2024, 4,400 clinicians with data). Median for this group: $15,434. Middle half: $6,111 to $35,691.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 316 clinicians with data). Median for this group: $10,961. Middle half: $5,253 to $24,121.
A higher Medicare payment amount than 90% of clinicians listed under Physician Assistant in Texas (2024, 4,400 clinicians with data). Median for this group: $11,276. Middle half: $4,395 to $26,238.
Medicare Part D prescriptions
More Part D prescriptions than 90% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 374 clinicians with data). Median for this group: 316. Middle half: 95 to 1,211.
More Part D prescriptions than 90% of clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: 261. Middle half: 73 to 938.
Part D drug cost
A higher Part D drug cost than 80% of clinicians listed under Physician Assistant in San Antonio, TX (2024, 374 clinicians with data). Median for this group: $12,426. Middle half: $1,117 to $100,545.
A higher Part D drug cost than 80% of clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: $7,999. Middle half: $749 to $103,240.
874 active clinicians are listed under Physician Assistant with a practice address in San Antonio, TX (11,008 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in San Antonio
13.2% of these 874 clinicians have the CMS telehealth indicator.
47.7% of these 874 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 increased 195% from 994 in 2020 to 2,934 in 2024.
- 2020: 994
- 2021: 1,784
- 2022: 1,806
- 2023: 1,531
- 2024: 2,934
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Medicare-allowed amount
Medicare-allowed amount increased 75% from $55,590 in 2020 to $97,450 in 2024.
- 2020: $55,590
- 2021: $106,167
- 2022: $103,446
- 2023: $86,384
- 2024: $97,450
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Paid by Medicare
Paid by Medicare increased 89% from $41,387 in 2020 to $78,233 in 2024.
- 2020: $41,387
- 2021: $84,211
- 2022: $84,571
- 2023: $70,026
- 2024: $78,233
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 96% from 1,456 in 2020 to 2,850 in 2024.
- 2020: 1,456
- 2021: 1,888
- 2022: 2,444
- 2023: 2,636
- 2024: 2,850
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30-day fills
30-day fills increased 132% from 2,555 in 2020 to 5,928 in 2024.
- 2020: 2,555
- 2021: 3,505
- 2022: 5,058
- 2023: 5,553
- 2024: 5,928
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Part D drug cost
Part D drug cost increased 523% from $24,636 in 2020 to $153,576 in 2024.
- 2020: $24,636
- 2021: $80,687
- 2022: $112,507
- 2023: $176,889
- 2024: $153,576
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $5.59 in 2021 to $12.38 in 2022.
- 2021: $5.59
- 2022: $12.38
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 · 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 – December 31, 2022): fewer than 11 records totaling $12.38.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Corium, LLC |
Food and Beverage
In-kind items and services
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AZSTARYS | General | $12.38 |
Source: CMS Open Payments, program year 2022, 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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J1010
Injection, methylprednisolone acetate, 1 mg
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1,561 | 30 | $0.40 | $0.13 |
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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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359 | 237 | $220.00 | $103.97 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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278 | 278 | $230.00 | $104.97 |
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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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249 | 176 | $160.00 | $73.62 |
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36415
Insertion of needle into vein for collection of blood sample
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52 | 49 | $10.74 | $8.65 |
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G0008
Administration of influenza virus vaccine
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51 | 51 | $50.98 | $31.03 |
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81003
Automated urinalysis test
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50 | 45 | $11.20 | $2.20 |
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96372
Injection of drug or substance under skin or into muscle
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47 | 43 | $37.00 | $11.56 |
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90662
Influenza vaccine split virus, preservative free
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45 | 45 | $110.00 | $80.72 |
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80061
Blood test, lipids (cholesterol and triglycerides)
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29 | 29 | $66.96 | $13.12 |
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85025
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
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28 | 26 | $26.43 | $7.61 |
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83036
Hemoglobin a1c level
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25 | 24 | $48.55 | $9.52 |
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80069
Kidney function blood test panel
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22 | 22 | $69.00 | $8.51 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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22 | 22 | $74.00 | $11.50 |
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84443
Blood test, thyroid stimulating hormone (tsh)
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19 | 18 | $83.93 | $16.46 |
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87428
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
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19 | 18 | $130.00 | $68.88 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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18 | 18 | $290.00 | $136.25 |
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80053
Blood test, comprehensive group of blood chemicals
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17 | 17 | $52.85 | $10.35 |
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84460
Liver enzyme (sgpt), level
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16 | 16 | $24.75 | $5.19 |
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82306
Vitamin d-3 level
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14 | 14 | $88.80 | $29.01 |
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82044
Urine microalbumin (protein) analysis
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13 | 13 | $28.00 | $6.11 |
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 |
|---|---|---|---|---|---|
| Rosuvastatin Calcium | Rosuvastatin Calcium | 160 | 14,438 | $1,938.45 | 64 |
| Losartan Potassium | Losartan Potassium | 152 | 13,055 | $1,179.06 | 60 |
| Lisinopril | Lisinopril | 109 | 8,860 | $633.36 | 37 |
| Amlodipine Besylate | Amlodipine Besylate | 92 | 7,220 | $475.16 | 34 |
| Atorvastatin Calcium | Atorvastatin Calcium | 88 | 8,090 | $764.33 | 30 |
| Meloxicam | Meloxicam | 85 | 3,355 | $228.84 | 46 |
| Pantoprazole Sodium | Pantoprazole Sodium | 83 | 5,806 | $775.03 | 33 |
| Trazodone Hcl | Trazodone Hcl | 80 | 4,787 | $645.77 | 33 |
| Levothyroxine Sodium | Levothyroxine Sodium | 78 | 6,641 | $908.74 | 29 |
| Montelukast Sodium | Montelukast Sodium | 68 | 5,100 | $766.86 | 23 |
| Escitalopram Oxalate | Escitalopram Oxalate | 67 | 3,580 | $554.51 | 20 |
| Zolpidem Tartrate | Zolpidem Tartrate | 64 | 2,580 | $584.38 | 18 |
| Alendronate Sodium | Alendronate Sodium | 57 | 4,812 | $630.22 | 20 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 57 | 574 | $647.40 | 52 |
| Glipizide Er | Glipizide | 56 | 5,090 | $641.03 | 18 |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 51 | 3,150 | $344.39 | 26 |
| Prednisone | Prednisone | 49 | 315 | $92.52 | 44 |
| Tramadol Hcl | Tramadol Hcl | 47 | 998 | $276.64 | 23 |
| Gabapentin | Gabapentin | 46 | 2,460 | $872.17 | 20 |
| Tamsulosin Hcl | Tamsulosin Hcl | 46 | 2,872 | $325.46 | 21 |
| Ozempic | Semaglutide | 43 | 2,070 | $69,009.70 | 16 |
| Alprazolam | Alprazolam | 42 | 1,200 | $169.95 | 22 |
| Hydrochlorothiazide | Hydrochlorothiazide | 41 | 3,280 | $243.09 | 15 |
| Omeprazole | Omeprazole | 41 | 3,450 | $873.45 | 17 |
| Fluticasone Propionate | Fluticasone Propionate | 40 | 2,390 | $677.06 | 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: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20170619000676
TX
3476821372
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
Physician Primecare, Inc
810 S E Military Dr, San Antonio, TX 782142823
Phone: 2109214200
Physician Primecare, Inc
10307 State Hwy 151, San Antonio, TX 782514557
Phone: 2102374983
Physician Primecare, Inc
1910 S New Braunfels, San Antonio, TX 782105220
Phone: 2105320891
Physician Primecare, Inc
20821 Us Hwy 281 North 122, San Antonio, TX 782587595
Phone: 2105461600
Physician Primecare, Inc
911 Castroville Rd, San Antonio, TX 782373146
Phone: 2104367402
Physician Primecare, Inc
530 San Pedro Ave, San Antonio, TX 782125006
Phone: 2102254511
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 Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Master of Science in Nursing, Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)
Physician Assistant
Physician Assistant
Career & Practice History
NPI enumerated April 12, 2017.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from May 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in San Antonio
- Ashley Mott, PA-C
- Shalene Thomas, PA-C
- Richard Williamson, PA-C
- Hannah Wilson, PA-C
- Loren Marie, PA
- Farrukh Shahzad
Mailing Address
2961 Mossrock
San Antonio, TX 782305119
Phone: 2107314800