Jacalyn C Siver , PA-C
Physician Assistant • Lake Jackson, TX
219 Oak Dr S Ste A
Lake Jackson, TX 775665675
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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NPI assigned on June 20, 2005; this date does not establish years in practice.
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Published CMS data list 488 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:
- 99213 — Established patient outpatient office visit: 274 service units.
- 99214 — Established patient outpatient office visit: 75 service units.
- 99203 — New patient outpatient office visit: 58 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 6 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 877 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:
- Omeprazole — 192 prescription fills, including refills.
- Famotidine — 168 prescription fills, including refills.
- Metoclopramide Hcl — 144 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 19 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 70% 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 564 in 2020 to 488 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
219 Oak Dr S Ste A
Lake Jackson, TX 775665675
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 3 distinct group names: Gulf Coast Gastroenterology, Pa; Houston Regional Gastroenterology Institute Pllc; Primary Care Associates Of Lake Jackson 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
1996
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
324 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 $31,292 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 $21,381 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
1,470 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
$48,129 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 2022
All general payments: $48.93 across 2 records.
By nature of payment
- Food and Beverage: $48.93 across 2 records.
Reporting-company totals
- ABBVIE INC.: $48.93 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 2022 (published June 30, 2026).
Years since graduation
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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
2005
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)
Jacalyn Siver 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 Jacalyn Siver 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 Lake Jackson and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in Texas (2024, 4,400 clinicians with data). Median for this group: 211. Middle half: 76 to 593.
Too few clinicians listed under Physician Assistant in Lake Jackson have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 70% 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.
Too few clinicians listed under Physician Assistant in Lake Jackson have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 65% 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.
Too few clinicians listed under Physician Assistant in Lake Jackson have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 70% of clinicians listed under Physician Assistant in Texas (2024, 4,882 clinicians with data). Median for this group: 261. Middle half: 73 to 938.
Too few clinicians listed under Physician Assistant in Lake Jackson have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 65% 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.
Too few clinicians listed under Physician Assistant in Lake Jackson have Medicare Part D data for 2024 to compare.
11 active clinicians are listed under Physician Assistant with a practice address in Lake Jackson, TX (11,008 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lake Jackson
18.2% of these 11 clinicians have the CMS telehealth indicator.
45.5% of these 11 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 13% from 564 in 2020 to 488 in 2024.
- 2020: 564
- 2021: 264
- 2022: 385
- 2023: 246
- 2024: 488
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Medicare-allowed amount
Medicare-allowed amount decreased 27% from $43,018 in 2020 to $31,292 in 2024.
- 2020: $43,018
- 2021: $21,624
- 2022: $26,260
- 2023: $14,860
- 2024: $31,292
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Paid by Medicare
Paid by Medicare decreased 27% from $29,108 in 2020 to $21,381 in 2024.
- 2020: $29,108
- 2021: $13,963
- 2022: $16,765
- 2023: $10,044
- 2024: $21,381
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Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 817 in 2020 and 877 in 2024.
- 2020: 817
- 2021: 181
- 2022: 223
- 2023: 232
- 2024: 877
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30-day fills
30-day fills varied from year to year: 1,609 in 2020 and 1,470 in 2024.
- 2020: 1,609
- 2021: 421
- 2022: 485
- 2023: 454
- 2024: 1,470
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Part D drug cost
Part D drug cost decreased 20% from $60,327 in 2020 to $48,129 in 2024.
- 2020: $60,327
- 2021: $2,469
- 2022: $2,441
- 2023: $6,122
- 2024: $48,129
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $62.07 in 2021 to $48.93 in 2022.
- 2021: $62.07
- 2022: $48.93
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 $48.93.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
HUMIRA | General | $26.66 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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RINVOQ | General | $22.27 |
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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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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274 | 214 | $164.96 | $54.81 |
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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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75 | 69 | $193.00 | $80.56 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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58 | 58 | $250.00 | $66.63 |
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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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38 | 38 | $282.89 | $109.97 |
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99442
Telephone medical discussion with physician, 11-20 minutes
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24 | 22 | $100.00 | $63.02 |
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99441
Telephone medical discussion with physician, 5-10 minutes
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19 | 18 | $62.00 | $35.58 |
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 |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 192 | 11,750 | $2,176.40 | 86 |
| Famotidine | Famotidine | 168 | 9,600 | $860.49 | 80 |
| Metoclopramide Hcl | Metoclopramide Hcl | 144 | 335 | $106.19 | 140 |
| Sod Sulf-Potass Sulf-Mag Sulf | Sodium, Potassium,mag Sulfates | 129 | 189 | $7,503.70 | 129 |
| Pantoprazole Sodium | Pantoprazole Sodium | 29 | 2,407 | $589.47 | 16 |
| Levothyroxine Sodium | Levothyroxine Sodium | 27 | 1,890 | $696.35 | — |
| Linzess | Linaclotide | 19 | 690 | $11,813.16 | — |
| Mesalamine | Mesalamine | 18 | 1,055 | $11,753.05 | 11 |
| Lisinopril | Lisinopril | 17 | 1,453 | $145.81 | — |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 16 | 483 | $518.13 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 15 | 690 | $46.54 | — |
| Atorvastatin Calcium | Atorvastatin Calcium | 14 | 1,177 | $93.38 | — |
| Dicyclomine Hcl | Dicyclomine Hcl | 14 | 420 | $133.97 | — |
| Sertraline Hcl | Sertraline Hcl | 13 | 1,170 | $99.63 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 13 | 930 | $185.49 | — |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 13 | 690 | $5.99 | — |
| Fluoxetine Hcl | Fluoxetine Hcl | 13 | 570 | $35.07 | — |
| Risedronate Sodium | Risedronate Sodium | 12 | 358 | $884.75 | — |
| Ozempic | Semaglutide | 11 | 308 | $10,481.20 | — |
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.
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
I20140204001364
TX
1355570805
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
Gulf Coast Gastroenterology, Pa
219 Oak Dr S, Lake Jackson, TX 775665675
Phone: 9792974033
Houston Regional Gastroenterology Institute Pllc
219 Oak Dr S, Lake Jackson, TX 775665675
Phone: 9792974033
Houston Regional Gastroenterology Institute Pllc
15555 Creek Bend Dr, Sugar Land, TX 774784670
Phone: 8327075978
Primary Care Associates Of Lake Jackson Pllc
219 Oak Dr S, Lake Jackson, TX 775665675
Phone: 9792974033
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Adult Health
Adult-Gerontology Nurse Practitioner
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 219 OAK DR S STE A, LAKE JACKSON, TX 775665675 (Tel: 9792974033)
Registered at 633 WALNUT ST, LAKE JACKSON, TX 775665747 (Tel: 3614846243)
Recorded as JACALYN SIVER, P.A.-C
Physician Assistant (license number reported to NPPES: SD 359)
NPI status registered as active in NPPES database
Registered at 701 N VIRGINIA ST, PORT LAVACA, TX 779793023 (Tel: 3615528866)
Registered at 701 N VIRGINIA ST, PORT LAVACA, TX 779793023 (Tel: 3615528866)
Recorded as JACKIE SIVER, P.A.-C
Physician Assistant (license number reported to NPPES: TX PA05248)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Lake Jackson
- Sophia Brown, PA-C
- Joel Mickail
- Brett Baker, PA
- Francis Dang, PA-C, MPH, RD, LD
- Madison Roman, PA-C
- Ivy Bishop, PA-C
More public profiles in Texas
Directory navigation, in NPI number order.
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- Calvin Abor, PA Physician Assistant · Abilene
- Thomas Narsete, MD Plastic Surgery · Plano
- Thomas Taylor, MD Orthopaedic Surgery · Longview
- Michael Stroud, MD Dermatology · Granbury
- Ann Martin, APRN Nurse Anesthetist, Certified Registered · Pearland
- Clint Meyer, OD Optometrist · Dallas
- Timothy Cole, MD Surgery · Mckinney
- Charles Yen, MD Internal Medicine - Hematology & Oncology · Houston
- Joseph Dowden, MD Pathology - Anatomic Pathology & Clinical Pathology · Odessa
- Ravi Jhaveri, MD Radiology - Diagnostic Radiology · Austin
- Nicholas Creel, MD, PA Specialist · Lake Jackson
Mailing Address
633 Walnut St
Lake Jackson, TX 775665747
Phone: 3614846243