1. Home
  2. Directory
  3. Tennessee
  4. Knoxville
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MATTHEW TJAHJA
NPI 1467088450
Internal Medicine in Knoxville, TN

Active since March 21, 2020PECOS EnrolledAccepts Medicare Assignment
1924 ALCOA HWY # U56, KNOXVILLE, TN 37920(865) 305-6446 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 8, 2026, Jul 24, 2023, Mar 21, 2020 (3 updates tracked since 2020).

About Matthew Tjahja NPPES

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

MATTHEW TJAHJA (NPI 1467088450) is an individual internal medicine provider in Knoxville, Tennessee, licensed in Texas (U2338) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS, is affiliated with Fort Loudoun Medical Center, and maintains a secondary practice location in Temple.

NPPES Registry Identity

NPI1467088450
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMATTHEW TJAHJA
Location Address1924 ALCOA HWY # U56Knoxville, TN 37920-1511
Mailing AddressPo Box 844658Dallas, TX 75284-4658 · (800) 994-0371 · Fax (254) 215-9722
Phone(865) 305-6446
Sole ProprietorNo
Medical School CMSTexas A & M University System, Hsc, College Of MedicineGraduated 2020
Enumeration DateMarch 21, 2020
Last NPPES UpdateJuly 8, 20263 updates tracked since enumeration
NPPES CertifiedJuly 8, 2026
✔ NPI 1467088450 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · U2338
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 74198 (TN)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1924 ALCOA HWY # U56, Knoxville, TN 37920
Open in Google Maps ↗

Secondary Practice Location 1

Location 12401 S 31st St # MS 01161BTemple, TX 76508-0001 · Phone (254) 724-2111

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare 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

Matthew Tjahja 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 ID446681175
PECOS Enrollment IDI20230418001185, I20250815000578
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 4

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.

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.
45 services26 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.
33 services24 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
27 services27 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
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.

Fort Loudoun Medical Center

Acute Care Hospitals · Lenoir City, TN
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number440110
Location550 Fort Loudon Medical Center DrLenoir City, TN 37772 · Loudon County
Emergency services

Parkwest Medical Center

Acute Care Hospitals · Knoxville, TN
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440173
Location9352 Park West BlvdKnoxville, TN 37923 · Knox County
Emergency services Birthing friendly

Val Verde Regional Medical Center

Acute Care Hospitals · Del Rio, TX
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450154
Location801 Bedell AveDel Rio, TX 78840 · Val Verde County
Emergency services

University Health System

Acute Care Hospitals · San Antonio, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450213
Location4502 Medical DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37920 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
$121.80 typical visit price
range $52.64 – $160.89
Typical copayment $30.45 (range $13.16 – $40.22)
Most-billed visit code 99204
Established Patient
$93.60 typical visit price
range $16.72 – $131.41
Typical copayment $23.40 (range $4.18 – $32.85)
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.

Other Providers at the Same Location NPPES 20

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

CHELSEA NICOLE RYAN
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
BETHANY A CULVER AGPCNP-BC
Nurse Practitioner (Acute Care)
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
DR. CLAYTON DEVEREAU HUMPHREY D.O.
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
DR. CHRISTOPHER HILL MD
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
SAMUEL GRAY WALKER DO
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
CLINTON ANDREW PHILLIPS MD
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
MRS. RACHAEL HOPE SMITH FNP-C
Nurse Practitioner (Acute Care)
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081
DR. CHIRAG PATEL DO
Hospitalist
1924 ALCOA HWY # U56
KNOXVILLE, TN 37920
Knox County (865) 305-9081

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Matthew Tjahja's NPI number?

The NPI number for Matthew Tjahja is 1467088450. It was assigned to this individual provider in the NPPES registry on March 21, 2020.

Where is Matthew Tjahja located?

Matthew Tjahja practices at 1924 Alcoa Hwy # U56, Knoxville, TN 37920. The listed phone number is (865) 305-6446.

What is Matthew Tjahja's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Matthew Tjahja enrolled in Medicare?

Yes. Matthew Tjahja is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Matthew Tjahja accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Molina Healthcare, Oscar Insurance Company and UnitedHealthcare and 1 other insurer list Matthew Tjahja as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Matthew Tjahja affiliated with any hospitals?

According to CMS data, Matthew Tjahja is affiliated with Fort Loudoun Medical Center, Parkwest Medical Center, Val Verde Regional Medical Center and University Health System.

When was this NPI record last updated?

The NPPES record for Matthew Tjahja was last updated on July 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.