Dr. Frederick S Tan , MD
Internal Medicine - Nephrology • Bryan, TX
2801 E 29th St, Ste 117
Bryan, TX 778022618
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. Frederick Tan is listed in NPPES under Internal Medicine - Nephrology.
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NPI assigned on July 26, 2006; this date does not establish years in practice.
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Published CMS data list 2,460 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: 653 service units.
- 99232 — Subsequent hospital care with moderate levelof medical decision making: 580 service units.
- 90970 — Dialysis services, per day, less than full month service (20 years or older): 434 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 9 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 2,062 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:
- Calcitriol — 446 prescription fills, including refills.
- Hydralazine Hcl — 153 prescription fills, including refills.
- Nifedipine Er (Nifedipine) — 126 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 38 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 75% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 900 clinicians with data). Median for this group: 1,229. Middle half: 627 to 2,176.
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 5,442 in 2020 to 2,460 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2801 E 29th St
Ste 117
Bryan, TX 778022618
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1982
What Public CMS Data Show
Internal Medicine - Nephrology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
483 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 $285,735 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 $215,268 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
4,823 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
$297,065 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 $39.14 in 2023
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 2023.
Years since graduation
44 years (graduated 1982)
CMS Doctors and Clinicians data list 1982 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
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.
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. Tan 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. Tan 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 Bryan and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 75% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 900 clinicians with data). Median for this group: 1,229. Middle half: 627 to 2,176.
Too few clinicians listed under Internal Medicine - Nephrology in Bryan have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 900 clinicians with data). Median for this group: $146,330. Middle half: $81,178 to $228,491.
Too few clinicians listed under Internal Medicine - Nephrology in Bryan have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 85% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 900 clinicians with data). Median for this group: $112,021. Middle half: $63,642 to $175,741.
Too few clinicians listed under Internal Medicine - Nephrology in Bryan have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 890 clinicians with data). Median for this group: 976. Middle half: 396 to 1,679.
Too few clinicians listed under Internal Medicine - Nephrology in Bryan have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 70% of clinicians listed under Internal Medicine - Nephrology in Texas (2024, 890 clinicians with data). Median for this group: $157,200. Middle half: $45,012 to $339,428.
Too few clinicians listed under Internal Medicine - Nephrology in Bryan have Medicare Part D data for 2024 to compare.
7 active clinicians are listed under Internal Medicine - Nephrology with a practice address in Bryan, TX (1,161 in Texas).
Addresses are self-reported to NPPES and may be out of date.
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 55% from 5,442 in 2020 to 2,460 in 2024.
- 2020: 5,442
- 2021: 4,519
- 2022: 3,525
- 2023: 2,925
- 2024: 2,460
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Medicare-allowed amount
Medicare-allowed amount decreased 53% from $609,882 in 2020 to $285,735 in 2024.
- 2020: $609,882
- 2021: $544,220
- 2022: $409,467
- 2023: $347,950
- 2024: $285,735
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Paid by Medicare
Paid by Medicare decreased 55% from $481,596 in 2020 to $215,268 in 2024.
- 2020: $481,596
- 2021: $429,495
- 2022: $318,714
- 2023: $268,115
- 2024: $215,268
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 2,207 in 2020 and 2,062 in 2024.
- 2020: 2,207
- 2021: 1,938
- 2022: 1,936
- 2023: 1,963
- 2024: 2,062
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30-day fills
30-day fills stayed about the same: 4,774 in 2020 and 4,823 in 2024.
- 2020: 4,774
- 2021: 4,246
- 2022: 4,300
- 2023: 4,522
- 2024: 4,823
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Part D drug cost
Part D drug cost decreased 41% from $501,168 in 2020 to $297,065 in 2024.
- 2020: $501,168
- 2021: $485,566
- 2022: $282,893
- 2023: $333,759
- 2024: $297,065
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2023 only.
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), 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 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $39.14.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| GlaxoSmithKline, LLC. |
Education
In-kind items and services
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JESDUVROQ | General | $39.14 |
Source: CMS Open Payments, program year 2023, 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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653 | 318 | $95.00 | $80.76 |
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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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580 | 115 | $110.00 | $68.79 |
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90970
Dialysis services, per day, less than full month service (20 years or older)
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434 | 29 | $17.00 | $8.01 |
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90960
Dialysis services, 4 or more physician visits per month (20 years or older)
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413 | 58 | $597.00 | $309.46 |
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90935
Hemodialysis procedure with physician evaluation
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89 | 34 | $120.00 | $62.50 |
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90966
Home dialysis services per month (20 years or older)
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89 | 14 | $502.00 | $257.65 |
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90961
Dialysis services, 2-3 physician visits per month (20 years or older)
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77 | 33 | $503.00 | $259.29 |
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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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64 | 64 | $150.00 | $98.36 |
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99222
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
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61 | 61 | $240.00 | $115.80 |
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 |
|---|---|---|---|---|---|
| Calcitriol | Calcitriol | 446 | 36,281 | $11,326.28 | 139 |
| Hydralazine Hcl | Hydralazine Hcl | 153 | 10,106 | $2,260.63 | 47 |
| Nifedipine Er | Nifedipine | 126 | 10,095 | $3,267.22 | 38 |
| Clonidine Hcl | Clonidine Hcl | 121 | 8,495 | $813.73 | 38 |
| Losartan Potassium | Losartan Potassium | 113 | 9,093 | $886.11 | 42 |
| Amlodipine Besylate | Amlodipine Besylate | 112 | 8,238 | $661.67 | 38 |
| Sevelamer Carbonate | Sevelamer Carbonate | 96 | 6,711 | $42,243.75 | 40 |
| Metoprolol Succinate | Metoprolol Succinate | 84 | 7,020 | $1,010.70 | 29 |
| Velphoro | Sucroferric Oxyhydroxide | 80 | 2,592 | $179,418.00 | 26 |
| Metoprolol Tartrate | Metoprolol Tartrate | 51 | 3,195 | $286.49 | 13 |
| Carvedilol | Carvedilol | 51 | 3,270 | $271.42 | 16 |
| Terazosin Hcl | Terazosin Hcl | 50 | 3,450 | $627.49 | 11 |
| Lisinopril | Lisinopril | 48 | 3,330 | $228.12 | 17 |
| Spironolactone | Spironolactone | 42 | 3,750 | $509.76 | 15 |
| Lidocaine-Prilocaine | Lidocaine/Prilocaine | 39 | 1,115 | $791.40 | — |
| Furosemide | Furosemide | 37 | 2,704 | $140.83 | 21 |
| Prednisone | Prednisone | 32 | 2,160 | $213.22 | — |
| Lanthanum Carbonate | Lanthanum Carbonate | 29 | 1,770 | $26,383.99 | 13 |
| Midodrine Hcl | Midodrine Hcl | 28 | 1,848 | $1,331.36 | 12 |
| Allopurinol | Allopurinol | 25 | 2,250 | $159.77 | — |
| Gabapentin | Gabapentin | 24 | 1,440 | $157.36 | — |
| Potassium Chloride | Potassium Chloride | 22 | 1,350 | $397.04 | 14 |
| Calcium Acetate | Calcium Acetate | 21 | 883 | $1,035.89 | — |
| Tamsulosin Hcl | Tamsulosin Hcl | 20 | 1,200 | $421.94 | — |
| Eliquis | Apixaban | 20 | 935 | $15,679.03 | — |
(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: 207RN0300X
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEPHROLOGY
I20110331000337
TX
6406941830
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
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.)
Career & Practice History
NPI enumerated July 26, 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 Internal Medicine - Nephrology Specialists in Bryan
- Dr. Asad Khan, MD
- Dr. Rejeesh Vasudev, MD
- Dr. Chizoba Obi, MD
- Dr. Prosperity Ezeanuna, MD
- Yougandhar Akula
- Dr. Richard Morgan, MD
Mailing Address
2801 E 29th St, Ste 117
Bryan, TX 778022618
Phone: 9797743960