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DR. STEPHANUS JOSEPH TJAN M.D.
NPI 1609888429
Internal Medicine in Littleton, CO

Active since August 12, 2006PECOS EnrolledCLIA 06D2170667 · Waiver
191 E ORCHARD RD STE 203, LITTLETON, CO 80121(303) 459-2150(855) 751-4155 Get Directions Write a Review

NPPES record last updated: July 20, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 20, 2021, Aug 27, 2019 (2 updates tracked since 2019).

About Dr. Stephanus Joseph Tjan M.d. NPPES

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

DR. STEPHANUS JOSEPH TJAN M.D. (NPI 1609888429) is an individual internal medicine provider in Littleton, Colorado, licensed in Colorado (49802) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through August 14, 2027, and is a graduate of Other (1966).

NPPES Registry Identity

NPI1609888429
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. STEPHANUS JOSEPH TJANCredential: M.D.
Location Address191 E ORCHARD RD STE 203Littleton, CO 80121-8057
Mailing Address191 E Orchard Rd Ste 203Littleton, CO 80121-8057 · (303) 459-2150 · Fax (855) 751-4155
Phone(303) 459-2150
Fax(855) 751-4155
Sole ProprietorYes
Medical School CMSOtherGraduated 1966
Enumeration DateAugust 12, 2006
Last NPPES UpdateJuly 20, 20212 updates tracked since enumeration
NPPES CertifiedJuly 20, 2021
✔ NPI 1609888429 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CO · 49802
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.
191 E ORCHARD RD STE 203, Littleton, CO 80121
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Other Identifiers 1

Medicaid72181281CO

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Stephanus Joseph Tjan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1254524606
PECOS Enrollment IDI20150810001746
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 06D2170667

Stephanus J Tjan, MD · Littleton, CO
Active · expires Aug 14, 2027
CLIA Number06D2170667
Laboratory TypePhysician Office
Certificate Effective DateAugust 15, 2025
Certificate Expiration DateAugust 14, 2027
Laboratory DirectorDr. Stephanus J. Tjan
Laboratory Phone(516) 529-4505
Laboratory LocationStephanus J Tjan, MD191 East Orchard Rd, Suite 203, Littleton, CO 80121
CLIA data matches this NPI record on: Address
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 2

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 services50 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80121 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
$132.55 typical visit price
range $58.06 – $174.82
Typical copayment $33.13 (range $14.51 – $43.70)
Most-billed visit code 99204
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
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 7

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

Intermittent urinary catheter, with insertion supplies A4353
DME-Orthotic Devices · category DF008N
1 supplier12 claims2,400 services$6.69 avg. paid by Medicare
Foam dressing, wound cover, sterile, pad size more than 16 sq. in. but less than or equal to 48 sq. in., without adhesive border, each dressing A6210
DME-Medical/Surgical Supplies · category DA023N
1 supplier12 claims120 services$19.26 avg. paid by Medicare
Foam dressing, wound cover, sterile, pad size 16 sq. in. or less, with any size adhesive border, each dressing A6212
DME-Medical/Surgical Supplies · category DA023N
1 supplier12 claims360 services$9.32 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers16 claims16 services$16.19 avg. paid by Medicare
Portable liquid oxygen system, rental; includes portable container, supply reservoir, humidifier, flowmeter, refill adaptor, contents gauge, cannula or mask, and tubing E0434
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$32.98 avg. paid by Medicare
Stationary liquid oxygen system, rental; includes container, contents, regulator, flowmeter, humidifier, nebulizer, cannula or mask, & tubing E0439
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$68.75 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Stephanus Tjan's NPI number?

The NPI number for Stephanus Tjan is 1609888429. It was assigned to this individual provider in the NPPES registry on August 12, 2006.

Where is Stephanus Tjan located?

Stephanus Tjan practices at 191 E Orchard Rd Ste 203, Littleton, CO 80121. The listed phone number is (303) 459-2150.

What is Stephanus Tjan's specialty?

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

Is Stephanus Tjan enrolled in Medicare?

Yes. Stephanus Tjan is registered in the Medicare PECOS enrollment system.

Does Stephanus Tjan hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 06D2170667) is associated with this NPI, valid through August 14, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Stephanus Tjan was last updated on July 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.