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TUN KYAW OO
NPI 1477973865
Internal Medicine in Lancaster, CA

Active since April 24, 2014PECOS EnrolledAccepts Medicare Assignment
43112 15TH ST W, LANCASTER, CA 93534(310) 437-9421 Get Directions Write a Review

NPPES record last updated: December 8, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 8, 2021, Oct 16, 2019 (2 updates tracked since 2019).

About Tun Kyaw Oo NPPES

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

TUN KYAW OO (NPI 1477973865) is an individual internal medicine provider in Lancaster, California, licensed in California (A147144) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2009).

NPPES Registry Identity

NPI1477973865
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameTUN KYAW OO
Location Address43112 15TH ST WLancaster, CA 93534-6219
Mailing Address43112 15th St WLancaster, CA 93534-6219 · (661) 747-0914
Phone(310) 437-9421
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateApril 24, 2014
Last NPPES UpdateDecember 8, 20212 updates tracked since enumeration
✔ NPI 1477973865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A147144
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.
43112 15TH ST W, Lancaster, CA 93534
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tun Kyaw Oo 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 ID4082970066
PECOS Enrollment IDI20171107002514
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.

Medicare Billing Reassignment

Medicare enrollment records show Tun Oo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
Same address
Health Maintenance Organization
43112 N 15TH ST
Lancaster, CA 93534
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1982863783 (661) 726-2279

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93534 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

DR. DAVID EVAN BRONSTEIN M.D.
Pediatrics (Pediatric Infectious Diseases)
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 726-2224
VIKAS JINDAL MD
Preventive Medicine (Occupational Medicine)
43112 15TH ST W, KOJ-KAISER PERMANENTE MEDICAL OFFICES LANCASTER
LANCASTER, CA 93534
Los Angeles County (661) 726-2106
BRENDA SMETHURST O.T.
Occupational Therapist
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 726-2471
SIFRIDO ALVARENGA
Respiratory Therapist, Registered
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 729-4498
ZIN WIN M.D.
Internal Medicine
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 726-2245
DUTT MEHTA DO
Family Medicine (Hospice and Palliative Medicine)
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (661) 723-2636
MS. DONNA L HILBER N.P.
Nurse Practitioner (Adult Health)
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (888) 778-5000
DR. IVY SEMENEZ M.D.
Internal Medicine
43112 15TH ST W
LANCASTER, CA 93534
Los Angeles County (877) 554-4404

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 Tun Oo's NPI number?

The NPI number for Tun Oo is 1477973865. It was assigned to this individual provider in the NPPES registry on April 24, 2014.

Where is Tun Oo located?

Tun Oo practices at 43112 15th St W, Lancaster, CA 93534. The listed phone number is (310) 437-9421.

What is Tun Oo's specialty?

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

Is Tun Oo enrolled in Medicare?

Yes. Tun Oo 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.

Which organization bills Medicare for Tun Oo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tun Oo reassigns Medicare benefits to Southern California Permanente Medical Group (Lancaster, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tun Oo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Tun Oo was last updated on December 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.