THOMAS B TAN MD
NPI 1275528382
Internal Medicine - Hematology & Oncology in Lake St Louis, MO

Q: What is Thomas Tan's NPI number?

The NPI number for Thomas Tan is 1275528382. It was assigned to this individual provider in the NPPES registry on September 14, 2005.

Q: What is Thomas Tan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Tan was last updated on March 3, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since September 14, 2005PECOS EnrolledAccepts Medicare Assignment

400 MEDICAL PLZ STE 100, LAKE ST LOUIS, MO 63367(636) 639-8600 Get Directions Write a Review

NPPES record last updated: March 3, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 3, 2025, Jul 1, 2020, Sep 24, 2019 (3 updates tracked since 2019).

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About Thomas B Tan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS B TAN MD (NPI 1275528382) is an individual hematology & oncology provider in Lake St Louis, Missouri, licensed in Missouri (2020008924) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Ssm St Joseph Health Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1275528382

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameTHOMAS B TANCredential: MD

Location Address400 MEDICAL PLZ STE 100Lake St Louis, MO 63367-1493

Mailing Address4724 N Davis HwyPensacola, FL 32503-2339 · (850) 696-4000 · Fax (850) 434-2647

Phone(636) 639-8600

Sole ProprietorNo

Medical School CMSOtherGraduated 1986

Enumeration DateSeptember 14, 2005

Last NPPES UpdateMarch 3, 20253 updates tracked since enumeration

NPPES CertifiedMarch 3, 2025

✔ NPI 1275528382 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in MO · 2020008924✔ Licensed in AL · 17614✔ Licensed in FL · 62467

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License MD221267 (OR), H2823 (TX)

400 MEDICAL PLZ STE 100, Lake St Louis, MO 63367

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Secondary Practice Locations 3

Location 12717 Michaelangelo Dr Ste 200Edinburg, TX 78539-1412 · Phone (956) 362-2250 · Fax (956) 362-2251

Location 22610 Uhrmann RdKlamath Falls, OR 97601-1123 · Phone (541) 274-4171

Location 3Rapid City Regional Hospital, 353 Fairmont Blvd.Rapid City, SD 57701 · Phone (850) 232-1165

Other Identifiers 4

Medicaid371163300FL

Other109896AL · Al Medicaid- Foley

Other110883AL · Al Medicaid- N Davis

Other110905AL · Al Medicaid- West Florida Office

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Thomas B Tan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012012677

PECOS Enrollment IDI20250210003469

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

272 services240 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

97 services38 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

79 services73 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

26 services21 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

17 services17 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

15 services15 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ssm St Joseph Health Center

Acute Care Hospitals · Saint Charles, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number260005

Location300 1st Capitol DrSaint Charles, MO 63301 · St. Charles County

Emergency services

Ssm Health Depaul Hospital St Louis

Acute Care Hospitals · Bridgeton, MO

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number260104

Location12303 Depaul DriveBridgeton, MO 63044 · St. Louis County

Emergency services Birthing friendly

Ssm St Joseph Hospital West

Acute Care Hospitals · Lake Saint Louis, MO

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number260200

Location100 Medical PlazaLake Saint Louis, MO 63367 · St. Charles County

Emergency services Birthing friendly

Sky Lakes Medical Center

Acute Care Hospitals · Klamath Falls, OR

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number380050

Location2865 Daggett AvenueKlamath Falls, OR 97601 · Klamath County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63367 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$169.38 typical visit price

range $55.65 – $169.38

Typical copayment $42.34 (range $13.91 – $42.34)

Most-billed visit code 99205

Established Patient

$98.37 typical visit price

range $17.76 – $137.92

Typical copayment $24.59 (range $4.44 – $34.48)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$21.30 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$119.41 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KRISTEN MARIE STRASSER M.D.

Internal Medicine (Hematology & Oncology)