NPPES file of Aug 9, 2026

Frederick S. Tan, MD

Nephrology Physician · Bryan, TX

Frederick S. Tan, MD is a nephrology physician with a practice address in Bryan, Texas, and NPI 1689698615, issued on Jul 26, 2006. Check the license (Texas K8511, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1689698615
Name
Frederick S. Tan
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
K8511 TX
Self-reported in NPPES; status is on the state search
Practice location
2801 E 29TH St, Bryan, TX 77802
Phone
(979) 774-3960
Enumerated
Jul 26, 2006
Record last updated
Feb 2, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(979) 774-4506
Medicare enrollment
Enrolled (PECOS I20110331000337); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2801 E 29TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jamie Houser, O.D.Optometrist1215261417
  2. Kelly Van Cleave, O.D.Optometrist1639622186

Verify Frederick S. Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license K8511
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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59% more Medicare Part D claims than the average nephrology physician in 2024

2,328 Medicare Part D claims for 425 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Frederick Tan2,328
  2. Specialty average1,465

Most prescribed

  1. Calcitriol446 claims
  2. Hydralazine Hcl153 claims
  3. Nifedipine Er126 claims
  4. Clonidine Hcl121 claims
  5. Losartan Potassium113 claims
  6. Amlodipine Besylate112 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 13.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%43.8
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Frederick S. Tan among 1,159 nephrology physician records in Texas

Frederick S. Tan, MD is one of 1,159 nephrology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.

  • NPI issued2006 · 15% of these records are older, 53% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 82% of these records are
  • Graduated1982 · median 2001 among the 954 with a school on file
  • Record last updated2012 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in Texas

There are 1,159 nephrology physician records in Texas.

The 8 nephrology physician records with the nearest ZIP codes

  1. Yougandhar AkulaBryan, TX 778021821243171
  2. Prosperity Ezeanuna, MDBryan, TX 778021235275900
  3. Asad Khan, MDBryan, TX 778021154483949
  4. Richard Morgan, MDBryan, TX 778021265574545
  5. Chizoba Obi, MDBryan, TX 778021376708222
  6. Rejeesh Vasudev, M.D.Bryan, TX 778021083807937
  7. Najam Firoz, MDCollege Station, TX 778451427163286
  8. Judson Severson, D.O.College Station, TX 778451801093877

Common questions

What is Frederick S. Tan, MD's NPI number?

Frederick S. Tan, MD's National Provider Identifier (NPI) is 1689698615, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Frederick S. Tan, MD located?

The NPPES record lists a practice address at 2801 E 29TH St, Bryan, TX, 77802. Phone: (979) 774-3960. Providers update this record themselves, so call before visiting.

How can I verify Frederick S. Tan, MD's license?

NPPES lists Texas license number K8511, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Frederick S. Tan, MD prescribe under Medicare Part D?

In 2024, Frederick S. Tan, MD had 2,328 Medicare Part D claims for 425 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

What is Frederick S. Tan, MD's MIPS final score?

The 2023 MIPS final score is 13.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.