Frederick Tan, MD
NPI 1689698615 · Nephrology Physician · Bryan, TX
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Tan, MD is a Nephrology Physician provider in Bryan, TX (NPI 1689698615).
Provider details
- NPI number
- 1689698615
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- K8511 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,460 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 653 | $81 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 580 | $69 |
| Dialysis Services, Per Day, Less Than Full Month Service (20 Years Or Older)90970 | 434 | $8 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 413 | $309 |
| Hemodialysis Procedure With Physician Evaluation90935 | 89 | $62 |
| Home Dialysis Services Per Month (20 Years Or Older)90966 | 89 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 446 | 139 |
| Hydralazine Hcl | 153 | 47 |
| Nifedipinebrand: Nifedipine Er | 126 | 38 |
| Clonidine Hcl | 121 | 38 |
| Losartan Potassium | 113 | 42 |
| Amlodipine Besylate | 112 | 38 |
| Sevelamer Carbonate | 96 | 40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2012-02-02
Frequently asked questions
- What is Frederick Tan's NPI number?
- Frederick Tan's National Provider Identifier (NPI) is 1689698615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Tan's specialty?
- Frederick Tan is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Tan located?
- Frederick Tan's practice location on file with NPPES is 2801 E 29th St, Bryan, TX 77802-2618.
- What is Frederick Tan's phone number?
- The practice phone number listed in the NPPES registry for Frederick Tan is (979) 774-3960.
- Does Frederick Tan accept Medicare?
- Frederick Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Tan's NPI active?
- Yes — Frederick Tan's NPI (1689698615) is active in the NPPES registry as of the last update on 2012-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.