Brian Keith Chamberlain , PA-C
Physician Assistant • Clearwater, FL
455 Pinellas St, #320
Clearwater, FL 337563354
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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Brian Chamberlain is listed in NPPES under Physician Assistant.
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NPI assigned on February 17, 2006; this date does not establish years in practice.
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Published CMS data list 28 Original Medicare Part B services in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Published rows only; this is not a quality measure.
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Published Part B service records, 2021:
- 99233 — Subsequent hospital care with moderate levelof medical decision making: 16 service units.
- 33405 — Replacement of aortic valve on heart-lung machine: 12 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2020 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2021). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 11 Medicare Part D prescriptions, including refills, in 2014.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2014. Published rows only; this is not a quality measure.
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Published Part D records, 2014:
- Metoprolol Tartrate — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2014. 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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Medicare Part B services went from 50 in 2017 to 28 in 2021.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2017–2021.
Practice Location & Contact Primary Location
455 Pinellas St
#320
Clearwater, FL 337563354
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $5,201 in 2021
The total amount Medicare approved for these services in 2021. 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, 2021.
Paid by Medicare
About $4,266 in 2021
The part of the Medicare-allowed amount that Medicare itself paid in 2021, 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, 2021.
30-day fills
11 standardized 30-day fills in 2014
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
$43 in 2014
The total cost of these prescriptions in 2014, 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, 2014.
Open Payments general payments, program year 2025
All general payments: $55.10 across 3 records.
By nature of payment
- Food and Beverage: $55.10 across 3 records.
Reporting-company totals
- Edwards Lifesciences Corporation: $20.61 across 1 record.
- Astellas Pharma US Inc: $20.03 across 1 record.
- TOLMAR, INC.: $14.46 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 2025 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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.
Compared with the same specialty in Clearwater and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Brian Chamberlain are from 2021.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Brian Chamberlain are from 2014.
116 active clinicians are listed under Physician Assistant with a practice address in Clearwater, FL (10,260 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Clearwater
3.4% of these 116 clinicians have the CMS telehealth indicator.
40.5% of these 116 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 44% from 50 in 2017 to 28 in 2021.
- 2017: 50
- 2020: 51
- 2021: 28
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Medicare-allowed amount
Medicare-allowed amount increased 39% from $3,751 in 2017 to $5,201 in 2021.
- 2017: $3,751
- 2020: $2,723
- 2021: $5,201
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Paid by Medicare
Paid by Medicare increased 43% from $2,988 in 2017 to $4,266 in 2021.
- 2017: $2,988
- 2020: $2,218
- 2021: $4,266
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 78% from 50 in 2013 to 11 in 2014.
- 2013: 50
- 2014: 11
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30-day fills
30-day fills decreased 78% from 50 in 2013 to 11 in 2014.
- 2013: 50
- 2014: 11
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Part D drug cost
Part D drug cost decreased 98% from $2,747 in 2013 to $43 in 2014.
- 2013: $2,747
- 2014: $43
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $27.47 in 2021 to $55.10 in 2025.
- 2021: $27.47
- 2022: $70.97
- 2023: $25.29
- 2024: $58.67
- 2025: $55.10
Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2014), 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): fewer than 11 records totaling $55.10.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Edwards Lifesciences Corporation |
Food and Beverage
In-kind items and services
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MITRIS RESILIA Mitral Valve | General | $20.61 |
| Astellas Pharma US Inc |
Food and Beverage
In-kind items and services
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Xtandi | General | $20.03 |
| TOLMAR, INC. |
Food and Beverage
In-kind items and services
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JATENZO | General | $14.46 |
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 2016–2020 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, 2017–2021; 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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16 | 12 | $261.19 | $88.11 |
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33405
Replacement of aortic valve on heart-lung machine
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12 | 12 | $6104.67 | $315.92 |
Source: CMS Part B by Provider and Service, 2021; 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 2014.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Metoprolol Tartrate | Metoprolol Tartrate | 11 | 330 | $42.82 | — |
Source: CMS Part D by Provider and Drug, 2014; 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.
Additional State Medicaid & Healthcare Payer Identifiers
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Physician Assistant - Surgical
Physician Assistant
Nurse Practitioner - Gerontology
ARNPC
Surgery - Vascular Surgery
Doctor of Medicine (M.D.)
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated February 17, 2006.
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 Physician Assistants in Clearwater
- Joseph Zanga, PA
- Breea Buckley, PA-C
- Allison Burgess, PA-C
- Deanna Weilbacher, PA
- Angelina Maddaloni, PA-C
- Taylor Westwood, PA-C
Mailing Address
Po Box 743409
Atlanta, GA 303743409
Phone: 7275320002